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Free and open-source software portal; libavcodec is a free and open-source [4] library of codecs for encoding and decoding video and audio data. [5]libavcodec is an integral part of many open-source multimedia applications and frameworks.
libavresample is a library containing audio resampling routines from the Libav project, similar to libswresample from ffmpeg. libavcodec is a library containing all of the native FFmpeg audio/video encoders and decoders. Most codecs were developed from scratch to ensure best performance and high code reusability.
EZ CD Audio Converter, FFmpeg with Mainconcept plugin (encoder only), Sonnox, Apple (decoder only), QuickTime (Mac version & decoder only). Exhale (encoder only), FFmpeg (decoding only with Fraunhofer FDK AAC library enabled for manually command, native decoding only), Android (decoder only) - Yes No No No No Vorbis Xiph.Org Foundation: 2000-05-11
Both FFmpeg and Libav can use the Fraunhofer FDK AAC library via libfdk-aac, and while the FFmpeg native encoder has become stable and good enough for common use, FDK is still considered the highest quality encoder available for use with FFmpeg. [79] Libav also recommends using FDK AAC if it is available. [80]
FFmpeg has a native WavPack encoder, which may be combined with software like GNU parallel to use multiple CPU cores to quickly transcode other lossless formats into WavPack, and from WavPack to any format that FFmpeg supports, without the need for additional software. However, FFMpeg's encoder is somewhat limited.
FFmpeg can also optionally (set at build time) link to the x264 library to encode H.264. CoreAVC by CoreCodec is a highly optimized commercial H.264 decoder. According to independent tests by people on the Doom9.org forums, it is the fastest software decoder as of June 2006.
The Libav project was a fork of the FFmpeg project. [6] It was announced on March 13, 2011 by a group of FFmpeg developers. [7] [8] [9] The event was related to an issue in project management and different goals: FFmpeg supporters wanted to keep development velocity in favour of more features, while Libav supporters and developers wanted to improve the state of the code and take the time to ...
The quality the codec can achieve is heavily based on the compression format the codec uses. A codec is not a format, and there may be multiple codecs that implement the same compression specification – for example, MPEG-1 codecs typically do not achieve quality/size ratio comparable to codecs that implement the more modern H.264 specification.