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This is a listing of open-source multimedia codecs and container formats. That doesn't necessarily mean that further restrictions (such as software patents) don't exist for these codecs and formats, which is the case for many of them, like MP3. Note that codec is software, not a format — for example, video produced with the XviD and FFmpeg MPEG-4 codecs is MPEG-4 ASP video.
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Container format|Containers
See also OGM, which is a fork of Ogg.
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Video codec|Video Codecs
x264 - H.264 (MPEG-4 part 10) implementation.
FFmpeg codecs - codecs in the libavcodec library from the FFmpeg project (FFV1, Snow, MPEG-1, MPEG-2, MPEG-4 part 2, MSMPEG-4, H.264, WMV2, SVQ3, MJPEG, HuffYUV, Indeo and others).
Tarkin - an experimental lossy video codec under development by the Xiph.org Foundation based on 3-D wavelet compression
Theora - Based on VP3, part of the Ogg Project.
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Audio codecs
FLAC - Lossless compression.
iLBC - Low bitrate voice compression.
LAME - Lossy compression (MP3 format).
Musepack - Lossy compression; an attempt to replicate the MP3 format.
Speex - Low bitrate compression, primarily voice.
TTA - Lossles compression
Vorbis - Lossy compression; developed by Xiph.org.
See also Advanced_Audio_Coding for open-source implementations of the AAC codec.
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Text Codecs
(generally used for subtitles/closed captioning)
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See also
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