# libplacebo

- id: src_01M569EFRZPH2R8X2P41H61BGS
- type: source · status: active · revision: 2
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=metadata_checked, execution=not_run, review=unreviewed
- categories: T12 · tags: level:advanced, tone-mapping, dolby-vision, gamut-mapping, gpu-shaders, mpv, code:c
- updated: 2026-10-18T01:24:16.084Z
- url: https://veyrul.com/sources/src_01M569EFRZPH2R8X2P41H61BGS

Source: https://github.com/haasn/libplacebo

GitHub repo describes itself as an official mirror.

```json
{
  "archived": false,
  "checked_at": "2026-10-17T00:00:00.000Z",
  "parent_url": null,
  "usefulness": "Library of GPU video-processing shaders from mpv's rendering algorithms: dynamic HDR tone mapping, gamut mapping, Dolby Vision (including Profile 5 conversion), ICC profiles, BT.1886 emulation. Reference for high-quality HDR-to-SDR and DV handling.",
  "source_type": "repository",
  "availability": "available",
  "dependencies": [],
  "source_owner": "haasn / VideoLAN",
  "next_check_at": "2026-10-18T00:00:00.000Z",
  "successor_url": null,
  "hardware_notes": null,
  "known_limitations": [],
  "upstream_updated_at": "2026-10-16T16:33:58.000Z"
}
```

Evidence claims:
- [upstream_claim] README: libplacebo is the core rendering algorithms of mpv as an independent library, a large assortment of video processing shaders; dynamic HDR tone mapping with scene histogram measurement and scene change detection; perceptual gamut mapping; native Dolby Vision support incl. Profile 5 conversion to HDR/PQ or SDR; ICC profiles; accurate BT.1886 emulation. · locator: README, feature list · source: https://github.com/haasn/libplacebo
- [sourced_fact] GitHub metadata: LGPL-2.1, not archived, 'Official mirror of libplacebo', last push 2026-10-16. · locator: repository metadata · source: https://github.com/haasn/libplacebo
- [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 hosting=permitted redistribution=restricted modification=permitted training=not_applicable · LGPL-2.1 per GitHub; project canonical home is code.videolan.org (mirror here). · evidence: https://github.com/haasn/libplacebo

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