List of open-source codecs

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This is a listing of open-source

Video codecs

• H.264/MPEG-4 AVC
  implementation. x264 is not a codec (encoder/decoder); it is just an encoder (it cannot decode video).
• OpenH264 – H.264 baseline profile encoding and decoding
• OpenVVC
  Broadcast Test^[3]. ^[4]
• x265 – An encoder based on the High Efficiency Video Coding (HEVC/H.265) standard.
• Xvid – MPEG-4 Part 2 codec, compatible with DivX
• libvpx – VP8 and VP9 implementation; formerly a proprietary codec developed by On2 Technologies, released by Google under a BSD-like license in May 2010.
• SVT-AV1 – An
  FLOSS now.^[5] SVT-AV1 is generally considered to be the most optimized and fastest free AV1 encoder, which is why it serves as the base for the development of new, free, general-purpose and production-ready implementations in the AOMedia Software Implementation Working Group.^[6] While SVT-AV1 already performs very well in constrained quality mode and is economically usable for many scenarios, as of the time being commercial implementations like Aurora1 may still beat it.^[7]
• VideoLAN dav1d – An AV1 decoder for decoding videos with AV1 codec
• Xiph.Org rav1e – An AV1 encoder written in Rust
• Google libgav1 – An AV1 decoder by Google
• AV1. The reference implementation is released under the LGPL 2.1 and currently available in version 2.0 (as of 12/2020)^[8]
• SVQ1
  , MJPEG, HuffYUV and others). Decoders in the libavcodec (H.264, SVQ3, WMV3, VP3, Theora, Indeo, Dirac, Lagarith and others).
• Lagarith – Video codec designed for strong lossless compression in RGB(A) colorspace (similar to ZIP/RAR/etc.)
• libtheora – A
  reference implementation of the Theora format, based on VP3
  , part of the Ogg Project
• BBC Research, and Schrödinger, an implementation developed by David Schleef.^[9]
• Lossless
  codec from BenRG
• Daala – Experimental Video codec which was under development by the Xiph.Org Foundation and finally merged into AV1.
• Cisco Systems, and merged technologies into AV1
  .
• Turing – A
  BBC Research
  .
• libaom – Reference implementation for the royalty free AV1 video coding format by AOMedia, inheriting technologies from VP9, Daala and Thor.
• Kvazaar – An academic open-source encoder based on the High Efficiency Video Coding (HEVC/H.265) standard.
• UVG266 academic
  Open-Source VVC/H.266-Encoder based on Kvazaar. ^[10] (on 3 Clause BSD License for Linux/Windows/macOS
  , and in Development)
• VVenC & VVdeC – An open-source encoder and decoder released by
  Fraunhofer HHI based on the Versatile Video Coding (VVC/H.266)
  standard available on GitHub.
• XEVE (the eXtra-fast Essential Video Encoder) MPEG-5 Part 1: Essential Video Coding
• XEVD (the eXtra-fast Essential Video Decoder) MPEG-5 Part 1: Essential Video Coding
• REVC – a Rust-based MPEG-5 Part 1: Essential Video Coding baseline encoder and decoder. ^[11]