{"id":"5bdfd52c-28a4-43a5-8002-a9c4d3ee6535","shortId":"kv2yWn","kind":"skill","title":"FFmpeg Thumbnail Mosaic Generator","tagline":"Creates video thumbnail mosaics and sprite sheets using FFmpeg filters and the fluent-ffmpeg Node.js wrapper. Generates contact sheets, animated GIF previews, and WebVTT thumbnail tracks.","description":"# FFmpeg Thumbnail Mosaic Generator\n\nCreates video thumbnail mosaics and sprite sheets using FFmpeg filters and the fluent-ffmpeg Node.js wrapper. Generates contact sheets, animated GIF previews, and WebVTT thumbnail tracks.\n\n## Installation\n\nNo source-backed install or usage instructions could be extracted automatically. Review the upstream project before running this skill in a sensitive workflow.\n\n- Source: https://github.com/FFmpeg/FFmpeg\n\n## Source\n\n- [Agent Skill Exchange](https://agentskillexchange.com/skills/ffmpeg-thumbnail-mosaic-generator/)","tags":["ffmpeg","thumbnail","mosaic","generator","skills","agentskillexchange","agent-skills","ai-agents","ai-tools","awesome-list","claude-code","codex"],"capabilities":["skill","source-agentskillexchange","skill-ffmpeg-thumbnail-mosaic-generator","topic-agent-skills","topic-ai-agents","topic-ai-tools","topic-awesome-list","topic-claude-code","topic-codex","topic-cursor","topic-llm","topic-mcp","topic-npx-skills","topic-openclaw","topic-skills-catalog"],"categories":["skills"],"synonyms":[],"warnings":[],"endpointUrl":"https://skills.sh/agentskillexchange/skills/ffmpeg-thumbnail-mosaic-generator","protocol":"skill","transport":"skills-sh","auth":{"type":"none","details":{"cli":"npx skills add agentskillexchange/skills","source_repo":"https://github.com/agentskillexchange/skills","install_from":"skills.sh"}},"qualityScore":"0.454","qualityRationale":"deterministic score 0.45 from registry signals: · indexed on github topic:agent-skills · 8 github stars · SKILL.md body (557 chars)","verified":false,"liveness":"unknown","lastLivenessCheck":null,"agentReviews":{"count":0,"score_avg":null,"cost_usd_avg":null,"success_rate":null,"latency_p50_ms":null,"narrative_summary":null,"summary_updated_at":null},"enrichmentModel":"deterministic:skill-github:v1","enrichmentVersion":1,"enrichedAt":"2026-05-18T19:10:27.009Z","embedding":null,"createdAt":"2026-05-18T13:16:32.409Z","updatedAt":"2026-05-18T19:10:27.009Z","lastSeenAt":"2026-05-18T19:10:27.009Z","tsv":"'/ffmpeg/ffmpeg':91 '/skills/ffmpeg-thumbnail-mosaic-generator/)':98 'agent':93 'agentskillexchange.com':97 'agentskillexchange.com/skills/ffmpeg-thumbnail-mosaic-generator/)':96 'anim':25,56 'automat':75 'back':67 'contact':23,54 'could':72 'creat':5,36 'exchang':95 'extract':74 'ffmpeg':1,13,19,32,44,50 'filter':14,45 'fluent':18,49 'fluent-ffmpeg':17,48 'generat':4,22,35,53 'gif':26,57 'github.com':90 'github.com/ffmpeg/ffmpeg':89 'instal':63,68 'instruct':71 'mosaic':3,8,34,39 'node.js':20,51 'preview':27,58 'project':79 'review':76 'run':81 'sensit':86 'sheet':11,24,42,55 'skill':83,94 'skill-ffmpeg-thumbnail-mosaic-generator' 'sourc':66,88,92 'source-agentskillexchange' 'source-back':65 'sprite':10,41 'thumbnail':2,7,30,33,38,61 'topic-agent-skills' 'topic-ai-agents' 'topic-ai-tools' 'topic-awesome-list' 'topic-claude-code' 'topic-codex' 'topic-cursor' 'topic-llm' 'topic-mcp' 'topic-npx-skills' 'topic-openclaw' 'topic-skills-catalog' 'track':31,62 'upstream':78 'usag':70 'use':12,43 'video':6,37 'webvtt':29,60 'workflow':87 'wrapper':21,52","prices":[{"id":"ac8ef956-2ec4-468a-a896-2dc4c5a89108","listingId":"5bdfd52c-28a4-43a5-8002-a9c4d3ee6535","amountUsd":"0","unit":"free","nativeCurrency":null,"nativeAmount":null,"chain":null,"payTo":null,"paymentMethod":"skill-free","isPrimary":true,"details":{"org":"agentskillexchange","category":"skills","install_from":"skills.sh"},"createdAt":"2026-05-18T13:16:32.409Z"}],"sources":[{"listingId":"5bdfd52c-28a4-43a5-8002-a9c4d3ee6535","source":"github","sourceId":"agentskillexchange/skills/ffmpeg-thumbnail-mosaic-generator","sourceUrl":"https://github.com/agentskillexchange/skills/tree/main/skills/ffmpeg-thumbnail-mosaic-generator","isPrimary":false,"firstSeenAt":"2026-05-18T13:16:32.409Z","lastSeenAt":"2026-05-18T19:10:27.009Z"}],"details":{"listingId":"5bdfd52c-28a4-43a5-8002-a9c4d3ee6535","quickStartSnippet":null,"exampleRequest":null,"exampleResponse":null,"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[],"useCases":[],"bestFor":[],"notFor":[],"kindDetails":{"org":"agentskillexchange","slug":"ffmpeg-thumbnail-mosaic-generator","github":{"repo":"agentskillexchange/skills","stars":8,"topics":["agent-skills","ai-agents","ai-tools","awesome-list","claude-code","codex","cursor","llm","mcp","npx-skills","openclaw","skills-catalog"],"license":"mit","html_url":"https://github.com/agentskillexchange/skills","pushed_at":"2026-05-18T19:02:17Z","description":"The open catalog of AI agent skills — 2,000+ security-scanned skills for Claude Code, Cursor, Codex, and more.","skill_md_sha":"8f16a74015b1e4ab7d106dd5a3c850fc4fb7b9c2","skill_md_path":"skills/ffmpeg-thumbnail-mosaic-generator/SKILL.md","default_branch":"main","skill_tree_url":"https://github.com/agentskillexchange/skills/tree/main/skills/ffmpeg-thumbnail-mosaic-generator"},"layout":"multi","source":"github","category":"skills","frontmatter":{"name":"FFmpeg Thumbnail Mosaic Generator","description":"Creates video thumbnail mosaics and sprite sheets using FFmpeg filters and the fluent-ffmpeg Node.js wrapper. Generates contact sheets, animated GIF previews, and WebVTT thumbnail tracks."},"skills_sh_url":"https://skills.sh/agentskillexchange/skills/ffmpeg-thumbnail-mosaic-generator"},"updatedAt":"2026-05-18T19:10:27.009Z"}}