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Reference.org
List of open-source codecs
open-in-new
<p>This is a listing of open-source <a href="/facts/Codec/C7b7Am8t">codecs</a>—that is, <a href="/facts/Open-source_software/HzTaB8E9">open-source software</a> <a href="/facts/Implementation/IH1KXgP3">implementations</a> of <a href="/facts/Audio_coding_format/qHAhppfD">audio</a> or <a href="/facts/Video_coding_format/Dmzykxmn">video coding formats</a>, <a href="/facts/Audio_codec/DkXoa6YP">audio codecs</a> and <a href="/facts/Video_codec/psfSuqg7">video codecs</a> respectively. Many of the codecs listed implement media formats that are restricted by patents and are hence not <a href="/facts/Open_format/TKcCW6mA">open formats</a>. For example, <a href="/facts/X264/owWXH5CL">x264</a> is a widely used open source implementation of the heavily patent encumbered MPEG-4 AVC video compression standard. </p>