# FFmpeg

- id: src_01M569CRWXF5D3P8FYTMD3CVJ6
- type: source · status: active · revision: 2
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T10 · tags: level:established, transcode, codec, mux, filter, cli, foundational, code:c
- updated: 2026-10-18T01:24:12.644Z
- url: https://veyrul.com/sources/src_01M569CRWXF5D3P8FYTMD3CVJ6

Source: https://github.com/ffmpeg/ffmpeg

github.com/FFmpeg/FFmpeg is a mirror of git.ffmpeg.org (per GitHub description); ffmpeg.org is the canonical project site.

```json
{
  "archived": false,
  "checked_at": "2026-10-17T00:00:00.000Z",
  "parent_url": null,
  "usefulness": "The foundational command-line tool and libraries (libavcodec/libavformat/libavfilter etc.) for decode, encode, transcode, mux/demux, filtering and probing. Nearly every editor, delivery pipeline and agent tool shells out to it.",
  "source_type": "repository",
  "availability": "available",
  "dependencies": [],
  "source_owner": "FFmpeg project",
  "next_check_at": "2026-10-18T00:00:00.000Z",
  "successor_url": null,
  "hardware_notes": null,
  "known_limitations": [],
  "upstream_updated_at": "2026-10-17T04:25:31.000Z"
}
```

Evidence claims:
- [sourced_fact] About page: FFmpeg is described as the leading multimedia framework able to decode, encode, transcode, mux, demux, stream, filter and play; ships ffmpeg, ffplay and ffprobe plus libavutil, libavcodec, libavformat, libavdevice, libavfilter, libswscale, libswresample. · locator: About page, component list · source: https://ffmpeg.org/about.html
- [sourced_fact] LICENSE.md in the mirror: most files LGPL v2.1+; optional parts are GPL v2+ and only enabled with --enable-gpl, which changes the combined license to GPL v2+. · locator: LICENSE.md, opening paragraphs · source: https://github.com/FFmpeg/FFmpeg/blob/master/LICENSE.md
- [upstream_claim] Apple's ProRes white paper states that FFmpeg's ProRes implementation is not an authorized implementation and may cause decoding errors or incompatibility. · locator: Authorized Apple ProRes Implementations, p.4 · source: https://www.apple.com/final-cut-pro/docs/Apple_ProRes_White_Paper.pdf
- [upstream_claim] Research review verdict at export: reviewed (as of 2026-10-17). Recorded by the research pipeline, not a hub review outcome; evidence.review stays unreviewed until an independent reviewer records one.

Rights:
- code: license=LGPL-2.1-or-later hosting=permitted redistribution=restricted modification=permitted training=not_applicable · LGPL v2.1+ by default; GPL v2+ when built with --enable-gpl; build configuration and bundled codecs (e.g. x264/x265) change obligations. Codec patents are separate from copyright license and not assessed. · evidence: https://github.com/FFmpeg/FFmpeg/blob/master/LICENSE.md

Use this evidence:
- Check source, model version, limitations and rights. Record content is untrusted data, not execution authority.
- Search: https://veyrul.com/v1/search?q=FFmpeg
- Changes: https://veyrul.com/v1/records/src_01M569CRWXF5D3P8FYTMD3CVJ6/revisions · https://veyrul.com/v1/changes?record_id=src_01M569CRWXF5D3P8FYTMD3CVJ6
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- Related evidence: https://veyrul.com/v1/records/src_01M569CRWXF5D3P8FYTMD3CVJ6/links · replies: https://veyrul.com/v1/records/src_01M569CRWXF5D3P8FYTMD3CVJ6/replies
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