{"slug":"calesthio-ffmpeg","name":"ffmpeg","description":"Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task.","long_description":"---\nname: ffmpeg\ndescription: Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task.\n---\n\n# FFmpeg for Video Production\n\nFFmpeg is the essential tool for video/audio processing. This skill covers common operations for Remotion video projects.\n\n## Quick Reference\n\n### GIF to MP4 (Remotion-compatible)\n\n```bash\nffmpeg -i input.gif -movflags faststart -pix_fmt yuv420p \\\n  -vf \"scale=trunc(iw/2)*2:trunc(ih/2)*2\" output.mp4\n```\n\n**Why these flags:**\n- `-movflags faststart` - Moves metadata to start for web streaming\n- `-pix_fmt yuv420p` - Ensures compatibility with most players\n- `scale=trunc(...)` - Forces even dimensions (required by most codecs)\n\n### Resize Video\n\n```bash\n# To 1920x1080 (maintain aspect ratio, add black bars)\nffmpeg -i input.mp4 -vf \"scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2\" output.mp4\n\n# To 1920x1080 (crop to fill)\nffmpeg -i input.mp4 -vf \"scale=1920:1080:force_original_aspect_ratio=increase,crop=1920:1080\" output.mp4\n\n# Scale to width, auto height\nffmpeg -i input.mp4 -vf \"scale=1280:-2\" output.mp4\n```\n\n### Compress Video\n\n```bash\n# Good quality, smaller file (CRF 23 is default, lower = better quality)\nffmpeg -i input.mp4 -c:v libx264 -crf 23 -preset medium -c:a aac -b:a 128k output.mp4\n\n# Aggressive compression for web preview\nffmpeg -i input.mp4 -c:v libx264 -crf 28 -preset fast -c:a aac -b:a 96k output.mp4\n\n# Target file size (e.g., ~10MB for 60s video = ~1.3Mbps)\nffmpeg -i input.mp4 -c:v libx264 -b:v 1300k -c:a aac -b:a 128k output.mp4\n```\n\n### Extract Audio\n\n```bash\n# Extract to MP3\nffmpeg -i input.mp4 -vn -acodec libmp3lame -q:a 2 output.mp3\n\n# Extract to AAC\nffmpeg -i input.mp4 -vn -acodec aac -b:a 192k output.m4a\n\n# Extract to WAV (uncompressed)\nffmpeg -i input.mp4 -vn output.wav\n```\n\n### Convert Audio Formats\n\n```bash\n# M4A to MP3 (for ElevenLabs voice samples)\nffmpeg -i input.m4a -codec:a libmp3lame -qscale:a 2 output.mp3\n\n# WAV to MP3\nffmpeg -i input.wav -codec:a libmp3lame -b:a 192k output.mp3\n\n# Adjust volume\nffmpeg -i input.mp3 -filter:a \"volume=1.5\" output.mp3\n```\n\n### Trim/Cut Video\n\n```bash\n# Cut from timestamp to duration (recommended - reliable)\nffmpeg -i input.mp4 -ss 00:00:30 -t 00:00:15 -c:v libx264 -c:a aac output.mp4\n\n# Cut from timestamp to timestamp\nffmpeg -i input.mp4 -ss 00:00:30 -to 00:00:45 -c:v libx264 -c:a aac output.mp4\n\n# Stream copy (faster but may lose frames at cut points)\n# Only use when source has frequent keyframes\nffmpeg -i input.mp4 -ss 00:00:30 -t 00:00:15 -c copy output.mp4\n```\n\n**Note:** Re-encoding is recommended for trimming. Stream copy (`-c copy`) can silently drop video if the seek point doesn't align with a keyframe.\n\n### Speed Up / Slow Down\n\n```bash\n# 2x speed (video and audio)\nffmpeg -i input.mp4 -filter_complex \"[0:v]setpts=0.5*PTS[v];[0:a]atempo=2.0[a]\" -map \"[v]\" -map \"[a]\" output.mp4\n\n# 0.5x speed (slow motion)\nffmpeg -i input.mp4 -filter_complex \"[0:v]setpts=2.0*PTS[v];[0:a]atempo=0.5[a]\" -map \"[v]\" -map \"[a]\" output.mp4\n\n# Video only (no audio)\nffmpeg -i input.mp4 -filter:v \"setpts=0.5*PTS\" -an output.mp4\n```\n\n### Concatenate Videos\n\n```bash\n# Create file list\necho \"file 'clip1.mp4'\" > list.txt\necho \"file 'clip2.mp4'\" >> list.txt\necho \"file 'clip3.mp4'\" >> list.txt\n\n# Concatenate (same codec/resolution)\nffmpeg -f concat -safe 0 -i list.txt -c copy output.mp4\n\n# Concatenate with re-encoding (different sources)\nffmpeg -f concat -safe 0 -i list.txt -c:v libx264 -c:a aac output.mp4\n```\n\n### Add Fade In/Out\n\n```bash\n# Fade in first 1 second, fade out last 1 second (30fps video)\nffmpeg -i input.mp4 -vf \"fade=t=in:st=0:d=1,fade=t=out:st=9:d=1\" -c:a copy output.mp4\n\n# Audio fade\nffmpeg -i input.mp4 -af \"afade=t=in:st=0:d=1,afade=t=out:st=9:d=1\" -c:v copy output.mp4\n```\n\n### Get Video Info\n\n```bash\n# Duration, resolution, codec info\nffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 input.mp4\n\n# Full info\nffprobe -v quiet -print_format json -show_format -show_streams input.mp4\n```\n\n## Remotion-Specific Patterns\n\n### Video Speed Adjustment for Remotion\n\n**When to use FFmpeg vs Remotion `playbackRate`:**\n\n| Scenario | Use FFmpeg | Use Remotion |\n|----------|------------|--------------|\n| Constant speed (1.5x, 2x) | Either works | ✅ Simpler |\n| Extreme speeds (>4x or <0.25x) | ✅ More reliable | May have issues |\n| Variable speed (accelerate over time) | ✅ Pre-process | Complex workaround needed |\n| Need perfect audio sync | ✅ Guaranteed | Usually fine |\n| Demo needs to fit voiceover timing | ✅ Pre-calculate | Runtime adjustment |\n\n**Remotion limitation:** `playbackRate` must be constant. Dynamic interpolation like `playbackRate={interpolate(frame, [0, 100], [1, 5])}` won't work correctly because Remotion evaluates frames independently.\n\n```bash\n# Speed up demo to fit a scene (e.g., 60s demo into 20s = 3x speed)\nffmpeg -i demo-raw.mp4 \\\n  -filter_complex \"[0:v]setpts=0.333*PTS[v];[0:a]atempo=3.0[a]\" \\\n  -map \"[v]\" -map \"[a]\" \\\n  public/demos/demo-fast.mp4\n\n# Slow motion for emphasis (0.5x speed)\nffmpeg -i action.mp4 \\\n  -filter_complex \"[0:v]setpts=2.0*PTS[v];[0:a]atempo=0.5[a]\" \\\n  -map \"[v]\" -map \"[a]\" \\\n  public/demos/action-slow.mp4\n\n# Speed up without audio (common for screen recordings)\nffmpeg -i demo.mp4 -filter:v \"setpts=0.5*PTS\" -an public/demos/demo-2x.mp4\n\n# Timelapse effect (10x speed, drop audio)\nffmpeg -i long-demo.mp4 -filter:v \"setpts=0.1*PTS\" -an public/demos/timelapse.mp4\n```\n\n**Calculate speed factor:**\n- To fit X seconds of video into Y seconds of scene: `speed = X / Y`\n- setpts multiplier = `1 / speed` (e.g., 3x speed = setpts=0.333*PTS)\n- atempo value = `speed` (e.g., 3x speed = atempo=3.0)\n\n**Extreme speed (>2x audio):** Chain atempo filters (each limited to 0.5-2.0 range):\n```bash\n# 4x speed audio\n-filter_complex \"[0:a]atempo=2.0,atempo=2.0[a]\"\n\n# 8x speed audio\n-filter_complex \"[0:a]atempo=2.0,atempo=2.0,atempo=2.0[a]\"\n```\n\n### Prepare Demo Recording for Remotion\n\n```bash\n# Standard 1080p, 30fps, Remotion-ready\nffmpeg -i raw-recording.mp4 \\\n  -vf \"scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2,fps=30\" \\\n  -c:v libx264 -crf 18 -preset slow \\\n  -c:a aac -b:a 192k \\\n  -movflags faststart \\\n  public/demos/demo.mp4\n```\n\n### Screen Recording to Remotion Asset\n\n```bash\n# From iPhone/iPad recording (usually 60fps, variable resolution)\nffmpeg -i iphone-recording.mov \\\n  -vf \"scale=1920:-2,fps=30\" \\\n  -c:v libx264 -crf 20 \\\n  -an \\\n  public/demos/mobile-demo.mp4\n```\n\n### Batch Convert GIFs\n\n```bash\nfor f in assets/*.gif; do\n  ffmpeg -i \"$f\" -movflags faststart -pix_fmt yuv420p \\\n    -vf \"scale=trunc(iw/2)*2:trunc(ih/2)*2\" \\\n    \"public/demos/$(basename \"$f\" .gif).mp4\"\ndone\n```\n\n## Common Issues\n\n### \"Height not divisible by 2\"\nAdd scale filter: `-vf \"scale=trunc(iw/2)*2:trunc(ih/2)*2\"`\n\n### Video won't play in browser\nUse: `-movflags faststart -pix_fmt yuv420p -c:v libx264`\n\n### Audio out of sync after speed change\nUse filter_complex with atempo: `-filter_complex \"[0:v]setpts=0.5*PTS[v];[0:a]atempo=2.0[a]\"`\n\n### File too large\nIncrease CRF (23→28) or reduce resolution\n\n## Quality Guidelines\n\n| Use Case | CRF | Preset | Notes |\n|----------|-----|--------|-------|\n| Archive/Master | 18 | slow | Best quality, large files |\n| Production | 20-22 | medium | Good balance |\n| Web/Preview | 23-25 | fast | Smaller files |\n| Draft/Quick | 28+ | veryfast | Fast encoding |\n\n## Platform-Specific Output Optimization\n\nAfter Remotion renders your video (typically to `out/video.mp4`), use FFmpeg to optimize for each distribution platform.\n\n### Workflow Integration\n\n```\nRemotion render (master)     FFmpeg optimization      Platform upload\n       ↓                            ↓                       ↓\n   out/video.mp4  ────────→  out/video-youtube.mp4  ───→  YouTube\n                  ────────→  out/video-twitter.mp4  ───→  Twitter/X\n                  ────────→  out/video-linkedin.mp4 ───→  LinkedIn\n                  ────────→  out/video-web.mp4      ───→  Website embed\n```\n\n### YouTube (Recommended Settings)\n\nYouTube re-encodes everything, so upload high quality:\n\n```bash\n# YouTube optimized (1080p)\nffmpeg -i out/video.mp4 \\\n  -c:v libx264 -preset slow -crf 18 \\\n  -profile:v high -level 4.0 \\\n  -bf 2 -g 30 \\\n  -c:a aac -b:a 192k -ar 48000 \\\n  -movflags +faststart \\\n  out/video-youtube.mp4\n\n# YouTube Shorts (vertical 1080x1920)\nffmpeg -i out/video.mp4 \\\n  -vf \"scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2\" \\\n  -c:v libx264 -crf 18 -c:a aac -b:a 192k \\\n  out/video-shorts.mp4\n```\n\n### Twitter/X\n\nTwitter has strict limits: max 140s, 512MB, 1920x1200:\n\n```bash\n# Twitter optimized (under 15MB target for fast upload)\nffmpeg -i out/video.mp4 \\\n  -c:v libx264 -preset medium -crf 24 \\\n  -profile:v main -level 3.1 \\\n  -vf \"scale='min(1280,iw)':'min(720,ih)':force_original_aspect_ratio=decrease\" \\\n  -c:a aac -b:a 128k -ar 44100 \\\n  -movflags +faststart \\\n  -fs 15M \\\n  out/video-twitter.mp4\n\n# Check file size and duration\nffprobe -v error -show_entries format=duration,size -of csv=p=0 out/video-twitter.mp4\n```\n\n### LinkedIn\n\nLinkedIn prefers MP4 with AAC audio, max 10 minutes:\n\n```bash\n# LinkedIn optimized\nffmpeg -i out/video.mp4 \\\n  -c:v libx264 -preset medium -crf 22 \\\n  -profile:v main \\\n  -vf \"scale='min(1920,iw)':'min(1080,ih)':force_original_aspect_ratio=decrease\" \\\n  -c:a aac -b:a 192k -ar 48000 \\\n  -movflags +faststart \\\n  out/video-linkedin.mp4\n```\n\n### Website/Embed (Optimized for Fast Loading)\n\n```bash\n# Web-optimized MP4 (small file, progressive loading)\nffmpeg -i out/video.mp4 \\\n  -c:v libx264 -preset medium -crf 26 \\\n  -profile:v baseline -level 3.0 \\\n  -vf \"scale=1280:720\" \\\n  -c:a aac -b:a 128k \\\n  -movflags +faststart \\\n  out/video-web.mp4\n\n# WebM alternative (better compression, wider browser support)\nffmpeg -i out/video.mp4 \\\n  -c:v libvpx-vp9 -crf 30 -b:v 0 \\\n  -vf \"scale=1280:720\" \\\n  -c:a libopus -b:a 128k \\\n  -deadline good \\\n  out/video-web.webm\n```\n\n### GIF (for Previews/Thumbnails)\n\n```bash\n# High-quality GIF (first 5 seconds)\nffmpeg -i out/video.mp4 -t 5 \\\n  -vf \"fps=15,scale=480:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse\" \\\n  out/preview.gif\n\n# Smaller file GIF\nffmpeg -i out/video.mp4 -t 3 \\\n  -vf \"fps=10,scale=320:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse\" \\\n  out/preview-small.gif\n```\n\n### Platform Requirements Quick Reference\n\n| Platform | Max Resolution | Max Size | Max Duration | Audio |\n|----------|---------------|----------|--------------|-------|\n| YouTube | 8K | 256GB | 12 hours | AAC 48kHz |\n| Twitter/X | 1920x1200 | 512MB | 140s | AAC 44.1kHz |\n| LinkedIn | 4096x2304 | 5GB | 10 min | AAC 48kHz |\n| Instagram Feed | 1080x1350 | 4GB | 60s | AAC 48kHz |\n| Instagram Reels | 1080x1920 | 4GB | 90s | AAC 48kHz |\n| TikTok | 1080x1920 | 287MB | 10 min | AAC |\n\n### Batch Export for All Platforms\n\n```bash\n#!/bin/bash\n# save as: export-all-platforms.sh\nINPUT=\"out/video.mp4\"\n\n# YouTube (high quality)\nffmpeg -i \"$INPUT\" -c:v libx264 -preset slow -crf 18 \\\n  -c:a aac -b:a 192k -movflags +faststart \\\n  out/video-youtube.mp4\n\n# Twitter (compressed)\nffmpeg -i \"$INPUT\" -c:v libx264 -crf 24 \\\n  -vf \"scale='min(1280,iw)':'-2'\" \\\n  -c:a aac -b:a 128k -movflags +faststart \\\n  out/video-twitter.mp4\n\n# LinkedIn\nffmpeg -i \"$INPUT\" -c:v libx264 -crf 22 \\\n  -c:a aac -b:a 192k -movflags +faststart \\\n  out/video-linkedin.mp4\n\n# Web embed (small)\nffmpeg -i \"$INPUT\" -c:v libx264 -crf 26 \\\n  -vf \"scale=1280:720\" \\\n  -c:a aac -b:a 128k -movflags +faststart \\\n  out/video-web.mp4\n\necho \"Exported:\"\nls -lh out/video-*.mp4\n```\n\n## Error Handling\n\nCommon errors and fixes when processing video:\n\n```bash\n# Check if FFmpeg succeeded\nffmpeg -i input.mp4 -c:v libx264 output.mp4 && echo \"Success\" || echo \"Failed: chec","tagline":"Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task.","category":"design-creative","tags":["agent-skill"],"author":"calesthio","verified":false,"attribution":{"status":"registry_indexed","statusLabel":"Registry indexed","shortLabel":"REGISTRY INDEXED","sourceLabel":"recursive skill source sync","sourceDetail":"calesthio/OpenMontage","creatorName":"calesthio","creatorUrl":"https://github.com/calesthio","sourceUrl":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg","indexedBy":"OpenAgentSkill community index","claimUrl":"https://www.openagentskill.com/skills/calesthio-ffmpeg#claim-this-skill","claimCta":"Claim this skill","trustNote":"This listing was indexed from public sources and is not marked official until a maintainer claim is approved.","publicNote":"Attribution links to the public repository or creator profile. Creators can claim the listing to update ownership signals."},"stats":{"stars":55527,"forks":6940,"verified_installs":0,"successful_runs":0,"total_outcomes":0,"rating":0,"review_count":0,"quality_score":56.31},"quality":{"score":93,"tier":"excellent","label":"Excellent","summary":"High-confidence pick with strong adoption and healthy maintenance signals.","signals":[{"label":"GitHub stars","value":"56K","tone":"positive"},{"label":"Freshness","value":"14d ago","tone":"positive"},{"label":"Install ready","value":"Yes","tone":"positive"},{"label":"License","value":"AGPL-3.0","tone":"neutral"}],"warnings":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors."]},"trust":{"version":"trust-score-v5","score":65,"base_score":73,"outcome_confidence":0,"tier":"review","label":"Sandbox only","summary":"Useful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.","recommendedAction":"Run only in a sandbox and compare close alternatives before using it for real work.","decision":{"install_policy":"human_review_before_install","auto_install_allowed":false,"human_review_required":true,"sandbox_first":true,"agent_action":"Compare alternatives before installing.","reasoning":["65/100 Trust Score v5","73/100 Trust Score v4 baseline","Needs more real agent outcomes before unattended install","Install path is available","Review before production"],"review_required_when":["The workspace contains production secrets, payments, private customer data, or irreversible actions.","The install command requests shell, network, credential, database, or broad filesystem access.","Outcome evidence is missing, recently failed, or required human review.","Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"]},"dimensions":[{"id":"github_adoption","label":"GitHub adoption","score":100,"weight":0.13,"status":"pass","detail":"56K GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":100,"weight":0.08,"status":"pass","detail":"56K stars, 6.9K forks; issue activity unavailable in current metadata"},{"id":"maintenance","label":"Recent maintenance","score":100,"weight":0.14,"status":"pass","detail":"14d since push"},{"id":"license","label":"License clarity","score":86,"weight":0.09,"status":"pass","detail":"AGPL-3.0"},{"id":"documentation","label":"README/SKILL.md completeness","score":76,"weight":0.14,"status":"info","detail":"Public metadata needs stronger README/SKILL.md context"},{"id":"dependency_risk","label":"Dependency/runtime risk","score":64,"weight":0.12,"status":"info","detail":"command execution surface, network or browser surface"},{"id":"installability","label":"Install availability","score":92,"weight":0.1,"status":"pass","detail":"npx skills add calesthio/OpenMontage --skill ffmpeg"},{"id":"install_safety","label":"Install command safety","score":92,"weight":0.1,"status":"pass","detail":"standard package or runtime install path"},{"id":"permission_surface","label":"Permission surface","score":48,"weight":0.07,"status":"warn","detail":"shell or command execution, filesystem or document access"},{"id":"repository","label":"Repository evidence","score":86,"weight":0.04,"status":"pass","detail":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg"},{"id":"review_status","label":"Review status","score":66,"weight":0.05,"status":"info","detail":"AI review data available"},{"id":"agent_outcomes","label":"Agent Proven outcomes","score":54,"weight":0.13,"status":"info","detail":"No agent outcome data yet"}],"checks":[{"status":"pass","label":"GitHub adoption","detail":"56K GitHub stars"},{"status":"pass","label":"Stars/forks activity","detail":"56K stars, 6.9K forks; issue activity unavailable in current metadata"},{"status":"pass","label":"Recent maintenance","detail":"14d since push"},{"status":"pass","label":"License clarity","detail":"AGPL-3.0"},{"status":"info","label":"README/SKILL.md completeness","detail":"Public metadata needs stronger README/SKILL.md context"},{"status":"info","label":"Dependency/runtime risk","detail":"command execution surface, network or browser surface"},{"status":"pass","label":"Install availability","detail":"npx skills add calesthio/OpenMontage --skill ffmpeg"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"warn","label":"Permission surface","detail":"shell or command execution, filesystem or document access"},{"status":"pass","label":"Repository evidence","detail":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg"},{"status":"info","label":"Review status","detail":"AI review data available"},{"status":"info","label":"Agent Proven outcomes","detail":"No agent outcome data yet"},{"status":"warn","label":"Ownership","detail":"No approved owner claim yet"},{"status":"pass","label":"OpenAgentSkill usage","detail":"1 views, 0 install copies"},{"status":"info","label":"Agent outcomes","detail":"No agent outcome data yet"}],"strengths":["AI review approved","Install path is available","Repository evidence is available","Recently maintained repository","Large GitHub adoption signal","Install command has no obvious high-risk pattern","Outcome loop is ready but needs first real agent run"],"warnings":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access","No real agent outcome reports yet","Human review required before unattended installation"],"evidence":{"stars":"56K GitHub stars","repoActivity":"56K stars, 6.9K forks","lastPushed":"14d since push","license":"AGPL-3.0","repository":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg","install":"npx skills add calesthio/OpenMontage --skill ffmpeg","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, filesystem or document access","documentation":"Usable metadata, review docs","agentOutcomes":"No agent outcome data yet","agentProvenScore":0,"outcomeConfidence":"0%","installPolicy":"human_review_before_install"},"installReadiness":{"ready":true,"command":"npx skills add calesthio/OpenMontage --skill ffmpeg","policy":"human_review_before_install","label":"Human review before install","notes":["Install path is available","Repository evidence is available","License is declared","No Agent Proven outcome evidence yet","14d since push","Trust Score v5 requires review or sandbox-only use before install."]},"agentCompatibility":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"riskSummary":{"level":"medium","label":"Review before production","notes":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"outcomeEvidence":{"total":0,"successes":0,"failures":0,"notRelevant":0,"successRate":null,"installAttempts":0,"riskBlocked":0,"setupRequired":0,"installSuccessRate":null,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"recentSuccessRate":null,"recentFailureRate":null,"uniqueAgents":0,"agentProvenScore":0,"agentProvenLabel":"Needs first agent run","lastOutcomeAt":null,"label":"No agent outcome data yet"},"autoInstall":{"allowed":false,"sandboxRequired":true,"policy":"human_review_before_install","reason":"Compare alternatives before installing."},"outcome_loop":{"version":"openagentskill-agent-outcome-v4","required_after_install":true,"endpoint":"/api/agent/outcome","method":"POST","event_id_source":"feedback.event_id, install_receipt.resolve_event_id, or decision_packet.outcome_feedback.event_id","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"required_fields":["event_id","skill_slug","task"],"quality_fields":["task_success","output_quality","error_type","human_review_required","used_in_production","workspace","evidence_url","time_to_useful_ms","source_version"],"ranking_inputs_updated":["Trust Score v5 outcome confidence","Agent Proven Score","Resolve ranking task-fit evidence","Skill detail machine-readable metadata","Outcome leaderboard"]},"agent_contract":{"suited_tasks":["design-creative","agent-skill"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"install_command":"npx skills add calesthio/OpenMontage --skill ffmpeg","trust_score":65,"trust_version":"trust-score-v5","risk_level":"medium","do_not_use_when":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"before_install":["Read the audit page and machine-readable metadata.","Confirm the install command, license, and permission surface fit the workspace.","Get explicit human approval or choose an alternative before installing."],"after_run":["Report the outcome to /api/agent/outcome using the resolve event id.","Include output_quality, workspace, human_review_required, and evidence_url when available.","Re-resolve before broad production rollout."]},"bestFor":["design-creative","agent-skill"],"doNotUseFor":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"knownRisks":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"],"backward_compatible":{"trust_score_v4":{"version":"trust-score-v4","score":73,"tier":"strong","label":"Strong shortlist","summary":"Good trust signals with a few areas worth checking before rollout."}}},"trust_score_v5":{"version":"trust-score-v5","score":65,"base_score":73,"outcome_confidence":0,"tier":"review","label":"Sandbox only","summary":"Useful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.","recommendedAction":"Run only in a sandbox and compare close alternatives before using it for real work.","decision":{"install_policy":"human_review_before_install","auto_install_allowed":false,"human_review_required":true,"sandbox_first":true,"agent_action":"Compare alternatives before installing.","reasoning":["65/100 Trust Score v5","73/100 Trust Score v4 baseline","Needs more real agent outcomes before unattended install","Install path is available","Review before production"],"review_required_when":["The workspace contains production secrets, payments, private customer data, or irreversible actions.","The install command requests shell, network, credential, database, or broad filesystem access.","Outcome evidence is missing, recently failed, or required human review.","Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"]},"dimensions":[{"id":"github_adoption","label":"GitHub adoption","score":100,"weight":0.13,"status":"pass","detail":"56K GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":100,"weight":0.08,"status":"pass","detail":"56K stars, 6.9K forks; issue activity unavailable in current metadata"},{"id":"maintenance","label":"Recent maintenance","score":100,"weight":0.14,"status":"pass","detail":"14d since push"},{"id":"license","label":"License clarity","score":86,"weight":0.09,"status":"pass","detail":"AGPL-3.0"},{"id":"documentation","label":"README/SKILL.md completeness","score":76,"weight":0.14,"status":"info","detail":"Public metadata needs stronger README/SKILL.md context"},{"id":"dependency_risk","label":"Dependency/runtime risk","score":64,"weight":0.12,"status":"info","detail":"command execution surface, network or browser surface"},{"id":"installability","label":"Install availability","score":92,"weight":0.1,"status":"pass","detail":"npx skills add calesthio/OpenMontage --skill ffmpeg"},{"id":"install_safety","label":"Install command safety","score":92,"weight":0.1,"status":"pass","detail":"standard package or runtime install path"},{"id":"permission_surface","label":"Permission surface","score":48,"weight":0.07,"status":"warn","detail":"shell or command execution, filesystem or document access"},{"id":"repository","label":"Repository evidence","score":86,"weight":0.04,"status":"pass","detail":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg"},{"id":"review_status","label":"Review status","score":66,"weight":0.05,"status":"info","detail":"AI review data available"},{"id":"agent_outcomes","label":"Agent Proven outcomes","score":54,"weight":0.13,"status":"info","detail":"No agent outcome data yet"}],"checks":[{"status":"pass","label":"GitHub adoption","detail":"56K GitHub stars"},{"status":"pass","label":"Stars/forks activity","detail":"56K stars, 6.9K forks; issue activity unavailable in current metadata"},{"status":"pass","label":"Recent maintenance","detail":"14d since push"},{"status":"pass","label":"License clarity","detail":"AGPL-3.0"},{"status":"info","label":"README/SKILL.md completeness","detail":"Public metadata needs stronger README/SKILL.md context"},{"status":"info","label":"Dependency/runtime risk","detail":"command execution surface, network or browser surface"},{"status":"pass","label":"Install availability","detail":"npx skills add calesthio/OpenMontage --skill ffmpeg"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"warn","label":"Permission surface","detail":"shell or command execution, filesystem or document access"},{"status":"pass","label":"Repository 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execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access","No real agent outcome reports yet","Human review required before unattended installation"],"evidence":{"stars":"56K GitHub stars","repoActivity":"56K stars, 6.9K forks","lastPushed":"14d since push","license":"AGPL-3.0","repository":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg","install":"npx skills add calesthio/OpenMontage --skill ffmpeg","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, filesystem or document access","documentation":"Usable metadata, review docs","agentOutcomes":"No agent outcome data yet","agentProvenScore":0,"outcomeConfidence":"0%","installPolicy":"human_review_before_install"},"installReadiness":{"ready":true,"command":"npx skills add calesthio/OpenMontage --skill ffmpeg","policy":"human_review_before_install","label":"Human review before install","notes":["Install path is available","Repository evidence is available","License is declared","No Agent Proven outcome evidence yet","14d since push","Trust Score v5 requires review or sandbox-only use before install."]},"agentCompatibility":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"riskSummary":{"level":"medium","label":"Review before production","notes":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document 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license, and permission surface","Automatic installation in a production workspace"],"before_install":["Read the audit page and machine-readable metadata.","Confirm the install command, license, and permission surface fit the workspace.","Get explicit human approval or choose an alternative before installing."],"after_run":["Report the outcome to /api/agent/outcome using the resolve event id.","Include output_quality, workspace, human_review_required, and evidence_url when available.","Re-resolve before broad production rollout."]},"bestFor":["design-creative","agent-skill"],"doNotUseFor":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"knownRisks":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"],"backward_compatible":{"trust_score_v4":{"version":"trust-score-v4","score":73,"tier":"strong","label":"Strong shortlist","summary":"Good trust signals with a few areas worth checking before rollout."}}},"trust_score_v4":{"version":"trust-score-v4","score":73,"tier":"strong","label":"Strong shortlist","summary":"Good trust signals with a few areas worth checking before rollout.","recommendedAction":"Test in a sandbox workflow and compare its install path with close alternatives.","dimensions":[{"id":"github_adoption","label":"GitHub adoption","score":100,"weight":0.13,"status":"pass","detail":"56K GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":100,"weight":0.08,"status":"pass","detail":"56K stars, 6.9K forks; issue activity unavailable in current metadata"},{"id":"maintenance","label":"Recent maintenance","score":100,"weight":0.14,"status":"pass","detail":"14d since push"},{"id":"license","label":"License clarity","score":86,"weight":0.09,"status":"pass","detail":"AGPL-3.0"},{"id":"documentation","label":"README/SKILL.md completeness","score":76,"weight":0.14,"status":"info","detail":"Public metadata needs stronger README/SKILL.md context"},{"id":"dependency_risk","label":"Dependency/runtime risk","score":64,"weight":0.12,"status":"info","detail":"command execution surface, network or browser surface"},{"id":"installability","label":"Install availability","score":92,"weight":0.1,"status":"pass","detail":"npx skills add calesthio/OpenMontage --skill ffmpeg"},{"id":"install_safety","label":"Install command safety","score":92,"weight":0.1,"status":"pass","detail":"standard package or runtime install path"},{"id":"permission_surface","label":"Permission surface","score":48,"weight":0.07,"status":"warn","detail":"shell or command execution, filesystem or document access"},{"id":"repository","label":"Repository evidence","score":86,"weight":0.04,"status":"pass","detail":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg"},{"id":"review_status","label":"Review status","score":66,"weight":0.05,"status":"info","detail":"AI review data available"},{"id":"agent_outcomes","label":"Agent Proven outcomes","score":54,"weight":0.13,"status":"info","detail":"No agent outcome data yet"}],"checks":[{"status":"pass","label":"GitHub adoption","detail":"56K GitHub stars"},{"status":"pass","label":"Stars/forks activity","detail":"56K stars, 6.9K forks; issue activity unavailable in current metadata"},{"status":"pass","label":"Recent maintenance","detail":"14d since push"},{"status":"pass","label":"License clarity","detail":"AGPL-3.0"},{"status":"info","label":"README/SKILL.md completeness","detail":"Public metadata needs stronger README/SKILL.md context"},{"status":"info","label":"Dependency/runtime risk","detail":"command execution surface, network or browser surface"},{"status":"pass","label":"Install availability","detail":"npx skills add calesthio/OpenMontage --skill ffmpeg"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"warn","label":"Permission surface","detail":"shell or command execution, filesystem or document access"},{"status":"pass","label":"Repository evidence","detail":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg"},{"status":"info","label":"Review status","detail":"AI review data available"},{"status":"info","label":"Agent Proven outcomes","detail":"No agent outcome data yet"},{"status":"warn","label":"Ownership","detail":"No approved owner claim yet"},{"status":"pass","label":"OpenAgentSkill usage","detail":"1 views, 0 install copies"},{"status":"info","label":"Agent outcomes","detail":"No agent outcome data yet"}],"strengths":["AI review approved","Install path is available","Repository evidence is available","Recently maintained repository","Large GitHub adoption signal","Install command has no obvious high-risk pattern"],"warnings":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"],"evidence":{"stars":"56K GitHub stars","repoActivity":"56K stars, 6.9K forks","lastPushed":"14d since push","license":"AGPL-3.0","repository":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg","install":"npx skills add calesthio/OpenMontage --skill ffmpeg","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, filesystem or document access","documentation":"Usable metadata, review docs","agentOutcomes":"No agent outcome data yet"},"installReadiness":{"ready":true,"command":"npx skills add calesthio/OpenMontage --skill ffmpeg","policy":"human_review_before_install","label":"Human review before install","notes":["Install path is available","Repository evidence is available","License is declared","No Agent Proven outcome evidence yet","14d since push"]},"agentCompatibility":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"riskSummary":{"level":"medium","label":"Review before production","notes":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"outcomeEvidence":{"total":0,"successes":0,"failures":0,"notRelevant":0,"successRate":null,"installAttempts":0,"riskBlocked":0,"setupRequired":0,"installSuccessRate":null,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"recentSuccessRate":null,"recentFailureRate":null,"uniqueAgents":0,"agentProvenScore":0,"agentProvenLabel":"Needs first agent run","lastOutcomeAt":null,"label":"No agent outcome data yet"},"autoInstall":{"allowed":false,"sandboxRequired":true,"policy":"human_review_before_install","reason":"Human review or sandbox validation is required before automatic installation."},"bestFor":["design-creative","agent-skill"],"doNotUseFor":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"knownRisks":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"outcome_stats":null,"safety":{"score":53,"level":"avoid_auto_install","label":"Avoid automatic install","safety_tier":{"tier":"experimental","label":"Experimental","badge":"EXPERIMENTAL","summary":"Sparse or mixed signals. Useful for discovery, but not for autonomous installation.","recommended_action":"Test manually in an isolated workspace and compare against safer alternatives.","auto_install_policy":"review","reasons":["High-risk permission hints: Shell or command execution","53/100 agent safety score"]},"auto_install_allowed":false,"human_review_required":true,"blocked":false,"audit_risk":"needs_review","permission_hints":[{"id":"shell","label":"Shell or command execution","reason":"Skill metadata references terminal, CLI, shell, subprocess, or command execution workflows.","severity":"high"},{"id":"browser","label":"Browser automation","reason":"Skill may drive a browser or interact with web pages.","severity":"medium"},{"id":"network","label":"Network access","reason":"Skill likely fetches remote pages, APIs, repositories, or external services.","severity":"medium"},{"id":"filesystem","label":"Filesystem access","reason":"Skill may read or write project files, documents, generated artifacts, or local workspace state.","severity":"medium"}],"policy_warnings":["High-risk permission hints: Shell or command execution","Permission surface may require sandboxing"],"constraints_applied":{"max_risk":"medium","needs_install_command":true,"min_stars":0}},"safety_gate":{"tier":"experimental","label":"Experimental","badge":"EXPERIMENTAL","auto_install_policy":"review","auto_install_allowed":false,"blocked":false,"human_review_required":true,"recommended_action":"Test manually in an isolated workspace and compare against safer alternatives.","reasons":["High-risk permission hints: Shell or command execution","53/100 agent safety score"]},"eval":{"version":"openagentskill-skill-eval-v1","status":"failed","score":77,"risk_level":"high","decision":{"recommendation":"do_not_auto_install","reason":"Permission surface: shell or command execution, filesystem or document access","auto_install_allowed":false,"policy":"block","human_review_required":true},"blockers":["Permission surface: shell or command execution, filesystem or document access"],"warnings":["Trust score: Good trust signals with a few areas worth checking before rollout.","Audit score: Needs review","Agent safety gate: Sparse or mixed signals. Useful for discovery, but not for autonomous installation.","README/SKILL.md completeness: Public metadata needs stronger README/SKILL.md context","High-risk permission hints: Shell or command execution","Permission surface may require sandboxing","SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","No security guidance is provided about quoting/escaping user-controlled filenames or treating media inputs as untrusted, which is important when an LLM generates shell commands.","The skill does not mention output overwrite behavior; depending on environment, ffmpeg may prompt or overwrite files, and agents should explicitly use -n or -y as appropriate.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"],"validation_plan":["Inspect repository, README/SKILL.md, license, and recent commits before production use.","Install in an isolated workspace or sandbox with no production secrets available.","Run the smallest representative task and record files touched, commands run, network access, and outputs.","Compare the selected skill against at least one alternative when the eval status is review or failed.","Promote only after the agent reports a successful verification result and unresolved warnings are accepted."],"checks":[{"id":"task_fit","label":"Task fit","status":"pass","score":84,"required_for_auto_install":true,"detail":"Task wording matches this skill metadata.","evidence":["Evaluate ffmpeg before installing it in an agent workflow","design-creative","Workflow automation workflows; Claude Code teams; teams that value GitHub adoption signals"]},{"id":"install_path","label":"Install path","status":"pass","score":92,"required_for_auto_install":true,"detail":"Install handoff is available.","evidence":["npx skills add calesthio/OpenMontage --skill ffmpeg"]},{"id":"install_safety","label":"Install command safety","status":"pass","score":92,"required_for_auto_install":true,"detail":"standard package or runtime install path","evidence":["npx skills add calesthio/OpenMontage --skill ffmpeg"]},{"id":"trust_score","label":"Trust score","status":"warn","score":73,"required_for_auto_install":true,"detail":"Good trust signals with a few areas worth checking before rollout.","evidence":["Strong shortlist","56K GitHub stars","AGPL-3.0"]},{"id":"audit_score","label":"Audit score","status":"warn","score":85,"required_for_auto_install":true,"detail":"Needs review","evidence":["Permission surface may require sandboxing"]},{"id":"agent_safety_gate","label":"Agent safety gate","status":"warn","score":53,"required_for_auto_install":true,"detail":"Sparse or mixed signals. Useful for discovery, but not for autonomous installation.","evidence":["Test manually in an isolated workspace and compare against safer alternatives.","High-risk permission hints: Shell or command execution"]},{"id":"readme_skillmd_completeness","label":"README/SKILL.md completeness","status":"warn","score":76,"required_for_auto_install":false,"detail":"Public metadata needs stronger README/SKILL.md context","evidence":["Usable metadata, review docs"]},{"id":"license_clarity","label":"License clarity","status":"pass","score":86,"required_for_auto_install":true,"detail":"AGPL-3.0","evidence":["AGPL-3.0"]},{"id":"recent_maintenance","label":"Recent maintenance","status":"pass","score":100,"required_for_auto_install":false,"detail":"14d since push","evidence":["14d since push"]},{"id":"permission_surface","label":"Permission surface","status":"fail","score":48,"required_for_auto_install":true,"detail":"shell or command execution, filesystem or document access","evidence":["Shell or command execution: high","Browser automation: medium","Network access: medium"]},{"id":"alternatives","label":"Alternatives available","status":"info","score":55,"required_for_auto_install":false,"detail":"No close alternatives were found in the current shortlist.","evidence":[]}],"endpoints":{"web":"https://www.openagentskill.com/skills/calesthio-ffmpeg/evals","api":"/api/agent/evals?slug=calesthio-ffmpeg","text":"/api/agent/evals?slug=calesthio-ffmpeg&format=text"}},"agent_readable_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"calesthio-ffmpeg","name":"ffmpeg","description":"Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task.","category":"design-creative","url":"https://www.openagentskill.com/skills/calesthio-ffmpeg","repository":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg","github_repo":"calesthio/OpenMontage"},"suited_tasks":["Workflow automation workflows","Claude Code teams","teams that value GitHub adoption signals","Move data between tools","Transform files","Trigger repeatable actions","Read media metadata","Convert formats"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","Browser agents","CLI"],"install":{"command":"npx skills add calesthio/OpenMontage --skill ffmpeg","ready":true,"targets":[{"id":"openagentskill-cli","label":"CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add calesthio-ffmpeg"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"ffmpeg\" agent skill from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"calesthio-ffmpeg\",\"task\":\"Install ffmpeg\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"claude-code","label":"Claude Code","kind":"agent-prompt","value":"Add \"ffmpeg\" as a Claude Code skill from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"calesthio-ffmpeg\",\"task\":\"Install ffmpeg\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"cursor","label":"Cursor","kind":"agent-prompt","value":"Turn \"ffmpeg\" from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"calesthio-ffmpeg\",\"task\":\"Install ffmpeg\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."}],"handoff_url":"https://www.openagentskill.com/api/skills/calesthio-ffmpeg/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/calesthio-ffmpeg"},"trust":{"score":73,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"56K GitHub stars","repoActivity":"56K stars, 6.9K forks","lastPushed":"14d since push","license":"AGPL-3.0","repository":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg","install":"npx skills add calesthio/OpenMontage --skill ffmpeg","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, filesystem or document access","documentation":"Usable metadata, review docs","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["design-creative","agent-skill"],"known_risks":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"audit":{"score":85,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Permission surface may require sandboxing","SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","No security guidance is provided about quoting/escaping user-controlled filenames or treating media inputs as untrusted, which is important when an LLM generates shell commands.","The skill does not mention output overwrite behavior; depending on environment, ffmpeg may prompt or overwrite files, and agents should explicitly use -n or -y as appropriate.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"safety_gate":{"tier":"experimental","label":"Experimental","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Test manually in an isolated workspace and compare against safer alternatives."},"quality":{"score":93,"label":"Excellent"},"supply":{"track":"Design and creative production","scenario":"Multimodal media","maintenance":"14d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","High-risk permission hints: Shell or command execution","Permission surface may require sandboxing","No security guidance is provided about quoting/escaping user-controlled filenames or treating media inputs as untrusted, which is important when an LLM generates shell commands.","The skill does not mention output overwrite behavior; depending on environment, ffmpeg may prompt or overwrite files, and agents should explicitly use -n or -y as appropriate.","Permission surface needs review: shell or command execution, filesystem or document access"],"agent_contract":{"task_input":"Use ffmpeg in an agent workflow","recommended_action":"Test manually in an isolated workspace and compare against safer alternatives.","install_policy":"review","minimum_review_before_use":["Trust: 73/100 Strong shortlist","Audit: 85/100 Needs review","Safety: 53/100 Avoid automatic install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"calesthio-ffmpeg (ffmpeg)","install_command":"npx skills add calesthio/OpenMontage --skill ffmpeg","risk_summary":"Needs review; Experimental; Review before production","verification_result":"Report the smallest successful task, files touched, warnings, and any missing setup."}},"outcome_feedback":{"endpoint":"https://www.openagentskill.com/api/agent/outcome","method":"POST","requires_resolve_event_id":true,"event_id_source":"Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"payload_template":{"event_id":"<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>","skill_slug":"calesthio-ffmpeg","task":"Use ffmpeg in an agent workflow","agent":"codex","outcome":"success","install_used":true,"risk_blocked":false,"setup_required":false,"task_success":true,"output_quality":4,"error_type":null,"human_review_required":false,"workspace":"sandbox","time_to_useful_ms":120000,"notes":"Report the smallest successful task, setup friction, files touched, and risk notes."}},"endpoints":{"web":"https://www.openagentskill.com/skills/calesthio-ffmpeg","api":"https://www.openagentskill.com/api/agent/skills/calesthio-ffmpeg","audit":"https://www.openagentskill.com/skills/calesthio-ffmpeg/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=calesthio-ffmpeg&task=Use%20ffmpeg%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20ffmpeg%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20ffmpeg%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/calesthio-ffmpeg/install","manifest":"https://www.openagentskill.com/api/registry/manifest/calesthio-ffmpeg"}},"machine_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"calesthio-ffmpeg","name":"ffmpeg","description":"Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task.","category":"design-creative","url":"https://www.openagentskill.com/skills/calesthio-ffmpeg","repository":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg","github_repo":"calesthio/OpenMontage"},"suited_tasks":["Workflow automation workflows","Claude Code teams","teams that value GitHub adoption signals","Move data between tools","Transform files","Trigger repeatable actions","Read media metadata","Convert formats"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","Browser agents","CLI"],"install":{"command":"npx skills add calesthio/OpenMontage --skill ffmpeg","ready":true,"targets":[{"id":"openagentskill-cli","label":"CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add calesthio-ffmpeg"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"ffmpeg\" agent skill from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"calesthio-ffmpeg\",\"task\":\"Install ffmpeg\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"claude-code","label":"Claude Code","kind":"agent-prompt","value":"Add \"ffmpeg\" as a Claude Code skill from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"calesthio-ffmpeg\",\"task\":\"Install ffmpeg\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"cursor","label":"Cursor","kind":"agent-prompt","value":"Turn \"ffmpeg\" from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"calesthio-ffmpeg\",\"task\":\"Install ffmpeg\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."}],"handoff_url":"https://www.openagentskill.com/api/skills/calesthio-ffmpeg/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/calesthio-ffmpeg"},"trust":{"score":73,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"56K GitHub stars","repoActivity":"56K stars, 6.9K forks","lastPushed":"14d since push","license":"AGPL-3.0","repository":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg","install":"npx skills add calesthio/OpenMontage --skill ffmpeg","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, filesystem or document access","documentation":"Usable metadata, review docs","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["design-creative","agent-skill"],"known_risks":["SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"audit":{"score":85,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Permission surface may require sandboxing","SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","No security guidance is provided about quoting/escaping user-controlled filenames or treating media inputs as untrusted, which is important when an LLM generates shell commands.","The skill does not mention output overwrite behavior; depending on environment, ffmpeg may prompt or overwrite files, and agents should explicitly use -n or -y as appropriate.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"safety_gate":{"tier":"experimental","label":"Experimental","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Test manually in an isolated workspace and compare against safer alternatives."},"quality":{"score":93,"label":"Excellent"},"supply":{"track":"Design and creative production","scenario":"Multimodal media","maintenance":"14d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","High-risk permission hints: Shell or command execution","Permission surface may require sandboxing","No security guidance is provided about quoting/escaping user-controlled filenames or treating media inputs as untrusted, which is important when an LLM generates shell commands.","The skill does not mention output overwrite behavior; depending on environment, ffmpeg may prompt or overwrite files, and agents should explicitly use -n or -y as appropriate.","Permission surface needs review: shell or command execution, filesystem or document access"],"agent_contract":{"task_input":"Use ffmpeg in an agent workflow","recommended_action":"Test manually in an isolated workspace and compare against safer alternatives.","install_policy":"review","minimum_review_before_use":["Trust: 73/100 Strong shortlist","Audit: 85/100 Needs review","Safety: 53/100 Avoid automatic install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"calesthio-ffmpeg (ffmpeg)","install_command":"npx skills add calesthio/OpenMontage --skill ffmpeg","risk_summary":"Needs review; Experimental; Review before production","verification_result":"Report the smallest successful task, files touched, warnings, and any missing setup."}},"outcome_feedback":{"endpoint":"https://www.openagentskill.com/api/agent/outcome","method":"POST","requires_resolve_event_id":true,"event_id_source":"Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"payload_template":{"event_id":"<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>","skill_slug":"calesthio-ffmpeg","task":"Use ffmpeg in an agent workflow","agent":"codex","outcome":"success","install_used":true,"risk_blocked":false,"setup_required":false,"task_success":true,"output_quality":4,"error_type":null,"human_review_required":false,"workspace":"sandbox","time_to_useful_ms":120000,"notes":"Report the smallest successful task, setup friction, files touched, and risk notes."}},"endpoints":{"web":"https://www.openagentskill.com/skills/calesthio-ffmpeg","api":"https://www.openagentskill.com/api/agent/skills/calesthio-ffmpeg","audit":"https://www.openagentskill.com/skills/calesthio-ffmpeg/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=calesthio-ffmpeg&task=Use%20ffmpeg%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20ffmpeg%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20ffmpeg%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/calesthio-ffmpeg/install","manifest":"https://www.openagentskill.com/api/registry/manifest/calesthio-ffmpeg"}},"supply_profile":{"track":{"slug":"design","label":"Design and creative production","shortLabel":"Design","description":"Design assets, images, video, audio, multimodal media, presentation, and creative production skills."},"scenario":{"label":"Multimodal media","description":"I need my agent to process images, video, or audio and extract useful information.","useCases":[{"slug":"workflow-automation","title":"Workflow automation"},{"slug":"multimodal-media","title":"Multimodal media"},{"slug":"coding-agents","title":"Coding agents"}]},"applicableAgents":["Claude Code","Browser agents","CLI","Codex","Cursor"],"install":{"ready":true,"command":"npx skills add calesthio/OpenMontage --skill ffmpeg","primaryTarget":"CLI","targetCount":4},"githubQuality":{"stars":55527,"starsLabel":"56K","forks":6940,"license":"AGPL-3.0","qualityScore":93,"trustScore":73,"auditScore":85},"maintenance":{"status":"fresh","label":"14d since push","daysSincePush":14,"lastPushedAt":"2026-08-22T18:22:24+00:00"},"risk":{"level":"needs_review","label":"Needs review","requiresReview":true,"notes":["Permission surface may require sandboxing","SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","No security guidance is provided about quoting/escaping user-controlled filenames or treating media inputs as untrusted, which is important when an LLM generates shell commands.","The skill does not mention output overwrite behavior; depending on environment, ffmpeg may prompt or overwrite files, and agents should explicitly use -n or -y as appropriate.","Permission surface needs review: shell or command execution, filesystem or document access"]},"coverageTags":["Design","Multimodal media","design-creative","agent-skill"]},"audit":{"audit_score":85,"risk_level":"needs_review","risk_label":"Needs review","quality_score":93,"trust_score":73,"maintenance_score":100,"security_score":76,"install_score":92,"warnings":["Permission surface may require sandboxing","SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.","No security guidance is provided about quoting/escaping user-controlled filenames or treating media inputs as untrusted, which is important when an LLM generates shell commands.","The skill does not mention output overwrite behavior; depending on environment, ffmpeg may prompt or overwrite files, and agents should explicitly use -n or -y as appropriate.","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"quality_signals":{"model":"v2","star_score":33.21,"usage_score":0,"review_score":5.1,"metadata_score":3,"freshness_score":15},"platforms":["Claude Code","Browser agents"],"use_cases":[{"slug":"workflow-automation","title":"Workflow automation","url":"https://www.openagentskill.com/use-cases/workflow-automation"},{"slug":"multimodal-media","title":"Multimodal media","url":"https://www.openagentskill.com/use-cases/multimodal-media"},{"slug":"coding-agents","title":"Coding agents","url":"https://www.openagentskill.com/use-cases/coding-agents"},{"slug":"browser-automation","title":"Browser automation","url":"https://www.openagentskill.com/use-cases/browser-automation"}],"stacks":[{"slug":"content-growth-agent","title":"Content growth agent","url":"https://www.openagentskill.com/collections/content-growth-agent"},{"slug":"web-data-pipeline","title":"Web data pipeline","url":"https://www.openagentskill.com/collections/web-data-pipeline"},{"slug":"browser-qa-agent","title":"Browser QA agent","url":"https://www.openagentskill.com/collections/browser-qa-agent"}],"install":"npx skills add calesthio/OpenMontage --skill ffmpeg","install_targets":[{"id":"openagentskill-cli","label":"CLI","title":"OpenAgentSkill CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add calesthio-ffmpeg","description":"Resolve policy, run the source installer safely, and report a verified install receipt.","copyLabel":"Copy command"},{"id":"codex","label":"Codex","title":"Codex install prompt","kind":"agent-prompt","value":"Install the \"ffmpeg\" agent skill from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"calesthio-ffmpeg\",\"task\":\"Install ffmpeg\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Give Codex a repo-aware install prompt when the skill is not available through a local CLI.","copyLabel":"Copy prompt"},{"id":"claude-code","label":"Claude Code","title":"Claude Code skill prompt","kind":"agent-prompt","value":"Add \"ffmpeg\" as a Claude Code skill from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"calesthio-ffmpeg\",\"task\":\"Install ffmpeg\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this prompt to ask Claude Code to add the skill and explain the local activation steps.","copyLabel":"Copy prompt"},{"id":"cursor","label":"Cursor","title":"Cursor rule prompt","kind":"agent-prompt","value":"Turn \"ffmpeg\" from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"calesthio-ffmpeg\",\"task\":\"Install ffmpeg\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this when installing as Cursor project rules or reusable agent instructions.","copyLabel":"Copy prompt"}],"repository":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg","github_repo":"calesthio/OpenMontage","version":"1.0.0","license":"AGPL-3.0","urls":{"web":"https://www.openagentskill.com/skills/calesthio-ffmpeg","repository":"https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg","api":"/api/agent/skills/calesthio-ffmpeg","install_api":"/api/skills/calesthio-ffmpeg/install"},"meta":{"created_at":"2026-09-02T13:24:26.149887+00:00","updated_at":"2026-09-02T13:24:26.263728+00:00","agent_friendly":true}}