List of open-source codecs

This is a listing of open-source codecs—that is, open-source software implementations of audio or video coding formats, audio codecs and video codecs respectively. Many of the codecs listed implement media formats that are restricted by patents and are hence not open formats. For example, x264 is a widely used open source implementation of the heavily patent encumbered MPEG-4 AVC video compression standard.

## Video codecs

[edit]

* x264 – 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[1] an VVC /H.266 Real Time-Decoder for Mac OS, Windows, Linux and Android and special Version of FFmpeg,[2] which was used for Ateme Satellite 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 AV1 encoder originally developed by Intel and Netflix, which is available as FOSS 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
* xvc – An open source video codec, aiming to compete with h.265 and AV1. The reference implementation is released under the LGPL 2.1 and currently available in version 2.0 (as of 12/2020)[8]
* FFmpeg codecs – Codecs in the libavcodec library from the FFmpeg project (FFV1, Snow, MPEG-1, MPEG-2, MPEG-4 part 2, MSMPEG-4, WMV2, 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
* Dirac as dirac-research, a wavelet based codec created by the BBC Research, and Schrödinger, an implementation developed by David Schleef.[9]
* Huffyuv – Lossless codec from BenRG
* Daala – Experimental Video codec which was under development by the Xiph.Org Foundation and finally merged into AV1.
* Thor – Experimental royalty free video codec which was under development by Cisco Systems, and merged technologies into AV1.
* Turing – A High Efficiency Video Coding (HEVC/H.265) encoder implemented by 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]

## Audio codecs

[edit]

* FLAC – Lossless codec developed by Xiph.Org Foundation.
* LAME – Lossy compression (MP3 format).
* TooLAME/TwoLAME – Lossy compression (MP2 format).
* Musepack – Lossy compression; based on MP2 format, with many improvements.
* Speex – Low bitrate compression, primarily voice; developed by Xiph.Org Foundation. Deprecated in favour of Opus according to www.speex.org.
* CELT – Lossy compression for low-latency audio communication
* libopus – A reference implementation of the Opus format, the IETF standards-track successor to CELT. (Opus support is mandatory for WebRTC implementations.)
* libvorbis – Lossy compression, implementation of the Vorbis format; developed by Xiph.Org Foundation.
* iLBC – Low bitrate compression, primarily voice
* iSAC – Low bitrate compression, primarily voice; (free when using the WebRTC codebase)
* TTA – Lossless compression
* WavPack – Hybrid lossy/lossless
* Bonk – Hybrid lossy/lossless; supported by fre:ac (formerly BonkEnc)
* Apple Lossless – Lossless compression (MP4)
* Fraunhofer FDK AAC – Lossy compression (AAC)
* FFmpeg codecs in the libavcodec library, e.g. AC-3, AAC, ADPCM, PCM, Apple Lossless, FLAC, WMA, Vorbis, MP2, etc.
* FAAD2 – open-source decoder for Advanced Audio Coding. There is also FAAC, the same project's encoder, but it is proprietary (but still free of charge).
* libgsm – Lossy compression (GSM 06.10)
* opencore-amr – Lossy compression (AMR and AMR-WB)
* liba52 – a free ATSC A/52 stream decoder (AC-3)
* libdca – a free DTS Coherent Acoustics decoder
* Codec2 – Low bitrate compression, primarily voice

## See also

[edit]

* Free and open-source software portal

* List of codecs
* Comparison of video codecs
* Comparison of audio coding formats
* Comparison of video player software
* Comparison of audio player software
* Open file format

## References

[edit]

1. ^ IETR (2021-09-30). "OpenVVC French VVC Decoder". GitHub.
2. ^ IETR (2021-09-30). "Modified FFmpeg for VVC". GitHub.
3. ^ "ATEME Joins Forces with SES to Trial First-Ever Live Over-The-Air UHD Broadcast Using VVC – ATEME". 2020-07-14.
4. ^ ouest-valorisation.fr (2021-09-30). "DÉCODEUR VIDÉO VVC TEMPS RÉEL" (in French).
5. ^ "Intel, Netflix to Deliver AV1 Scalable Codec to Power Next-Gen Compression Tech for Visual Workloads".
6. ^ "AOMedia Software Implementation Working Group to Bring AV1 to More Video Platforms". Alliance for Open Media. 20 August 2020.
7. ^ "AV1 Has Arrived: Comparing Codecs from AOMedia, Visionular, and Intel/Netflix". 18 September 2020.
8. ^ "XVC". Retrieved 2024-01-11.
9. ^ "Schrodinger FAQ". Archived from the original on 2010-10-17. Retrieved 2011-03-05.
10. ^ "UVG266". Retrieved 2024-01-11.
11. ^ "The fastest and safest EVC encoder and decoder". GitHub. Retrieved 26 August 2020.

* v
* t
* e

Data compression software

Archivers with
compression
(comparison)|

| Free software|

* 7-Zip
* Ark
* Expander
* FreeArc
* GNOME Archive Manager
* Info-ZIP
* KGB Archiver
* PAQ
* pax
* PeaZip
* XAD (decompression only)
* Xarchiver
* Zipeg
* ZPAQ

|

Freeware|

* Filzip
* LHA
* Lhasa (decompression only)
* StuffIt Expander (decompression only)
* The Unarchiver (decompression only)
* TUGZip
* ZipGenius

Commercial|

* ARC
* ALZip
* Archive Utility
* ARJ
* BetterZip
* MacBinary
* PKZIP/SecureZIP
* PowerArchiver
* StuffIt
* WinAce
* WinRAR
* WinZip

Non-archiving
compressors|

| Generic|

* bzip2
* compress
* gzip
* lzip
* lzop
* pack
* rzip
* Snappy
* XZ Utils
* zstd

|

For code|

UPX

Audio
compression
(comparison)|

| Lossy|

* AAC
* Fraunhofer FDK AAC
* Nero AAC Codec
* FAAC
* Helix DNA Producer
* MP3
* l3enc
* LAME
* TooLAME
* libavcodec
* libcelt
* libopus
* libspeex
* Musepack
* libvorbis
* Windows Media Encoder

|

Lossless|

* ALAC
* FLAC
* libavcodec
* Monkey's Audio
* mp4als
* OptimFROG
* Shorten
* WavPack

Video
compression
(comparison)|

| Lossy|

| MPEG-4 ASP|

* 3ivx
* DivX
* Nero Digital
* FFmpeg
* HDX4
* Xvid

|

H.264|

* CoreAVC
* Blu-code
* DivX
* FFmpeg
* Nero Digital
* OpenH264
* QuickTime
* x264

HEVC|

* DivX
* x265

Others|

* CineForm
* Cinepak
* Daala
* DNxHD
* Helix DNA Producer
* Indeo
* libavcodec
* Schrödinger (Dirac)
* SBC
* Sorenson
* VP7
* libtheora
* libvpx
* Windows Media Encoder

Lossless|

* FFV1
* Huffyuv
* Lagarith
* MSU Lossless
* YULS

* See also: compression methods and compression formats

* v
* t
* e

Multimedia compression and container formats

Video
compression|

| ISO, IEC,
MPEG|

* DV
* MJPEG
* Motion JPEG 2000
* MPEG-1
* MPEG-2
* Part 2
* MPEG-4
* Part 2 / ASP
* Part 10 / AVC
* Part 33 / IVC
* MPEG-H
* Part 2 / HEVC
* MPEG-I
* Part 3 / VVC
* MPEG-5
* Part 1 / EVC
* Part 2 / LCEVC

|

ITU-T, VCEG|

* H.120
* H.261
* H.262
* H.263
* H.264 / AVC
* H.265 / HEVC
* H.266 / VVC

SMPTE|

* VC-1
* VC-2
* VC-3
* VC-5
* VC-6

TrueMotion and AOMedia|

* TrueMotion S
* VP3
* VP6
* VP7
* VP8
* VP9
* AV1

Chinese Standard|

* AVS1 P2/AVS+(GB/T 20090.2/16)
* AVS2 P2(GB/T 33475.2,GY/T 299.1)
* HDR Vivid(GY/T 358)
* AVS3 P2(GY/T 368)

Others|

* Apple Video
* AVS
* Bink
* Cinepak
* Daala
* DVI
* FFV1
* Huffyuv
* Indeo
* Lagarith
* Microsoft Video 1
* MSU Lossless
* OMS Video
* Pixlet
* ProRes
* 422
* 4444
* QuickTime
* Animation
* Graphics
* RealVideo
* RTVideo
* SheerVideo
* Smacker
* Sorenson Video/Spark
* Theora
* Thor
* Ut
* WMV
* XEB
* YULS

Audio
compression|

| ISO, IEC,
MPEG|

* MPEG-1 Layer II
* Multichannel
* MPEG-1 Layer I
* MPEG-1 Layer III (MP3)
* AAC
* HE-AAC
* AAC-LD
* MPEG Surround
* MPEG-4 ALS
* MPEG-4 SLS
* MPEG-4 DST
* MPEG-4 HVXC
* MPEG-4 CELP
* MPEG-D USAC
* MPEG-H 3D Audio

|

ITU-T|

* G.711
* A-law
* µ-law
* G.718
* G.719
* G.722
* G.722.1
* G.722.2
* G.723
* G.723.1
* G.726
* G.728
* G.729
* G.729.1

IETF|

* Opus
* iLBC
* Speex
* Vorbis
* FLAC

3GPP|

* AMR
* AMR-WB
* AMR-WB+
* EVRC
* EVRC-B
* EVS
* GSM-HR
* GSM-FR
* GSM-EFR

ETSI|

* AC-3
* AC-4
* DTS

Bluetooth SIG|

* SBC
* LC3

Chinese Standard|

* AVS1 P10(GB/T 20090.10)
* AVS2 P3(GB/T 33475.3)
* Audio Vivid(GY/T 363)
* DRA(GB/T 22726)
* ExAC(SJ/T 11299.4)

Others|

* ACELP
* ALAC
* Asao
* ATRAC
* CELT
* Codec 2
* iSAC
* Lyra
* MELP
* Monkey's Audio
* MT9
* Musepack
* OptimFROG
* OSQ
* QCELP
* RCELP
* RealAudio
* RTAudio
* SD2
* SHN
* SILK
* Siren
* SMV
* SVOPC
* TTA
* True Audio
* TwinVQ
* VMR-WB
* VSELP
* WavPack
* WMA
* MQA
* aptX
* aptX HD
* aptX Low Latency
* aptX Adaptive
* LDAC
* LHDC
* LLAC

Image
compression|

| IEC, ISO, IETF,
W3C, ITU-T, JPEG|

* CCITT Group 4
* GIF
* HEIC / HEIF
* HEVC
* JBIG
* JBIG2
* JPEG
* JPEG 2000
* JPEG-LS
* JPEG XL
* JPEG XR
* JPEG XS
* JPEG XT
* PNG
* TIFF
* TIFF/EP
* TIFF/IT

|

Others|

* APNG
* AV1
* AVIF
* BPG
* DjVu
* EXR
* FLIF
* ICER
* MNG
* PGF
* QOI
* QTVR
* WBMP
* WebP

Containers|

| ISO, IEC|

* MPEG-ES
* MPEG-PES
* MPEG-PS
* MPEG-TS
* ISO/IEC base media file format
* MPEG-4 Part 14 (MP4)
* Motion JPEG 2000
* MPEG-21 Part 9
* MPEG media transport

|

ITU-T|

* H.222.0
* T.802

IETF|

* RTP
* Ogg
* Matroska

SMPTE|

* GXF
* MXF

Others|

* 3GP and 3G2
* AMV
* ASF
* AIFF
* AVI
* AU
* BPG
* Bink
* Smacker
* BMP
* DivX Media Format
* EVO
* Flash Video
* HEIF
* IFF
* M2TS
* Matroska
* WebM
* QuickTime File Format
* RatDVD
* RealMedia
* RIFF
* WAV
* MOD and TOD
* VOB, IFO and BUP

Collaborations|

* NETVC
* MPEG LA
* Alliance for Open Media

Methods|

* Entropy
* Arithmetic
* Huffman
* Modified
* LPC
* ACELP
* CELP
* LSP
* WLPC
* Lossless
* Lossy
* LZ
* DEFLATE
* LZW
* PCM
* A-law
* µ-law
* ADPCM
* DPCM
* Transforms
* DCT
* FFT
* MDCT
* Wavelet
* Daubechies
* DWT

Lists|

* Comparison of audio coding formats
* Comparison of video codecs
* List of codecs

See Compression methods for techniques and Compression software for codecs
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