Libav: Difference between revisions
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Libav is developed mostly under unix-like systems, but it can be compiled under most operating systems, including Microsoft Windows. The code is released adopting a seasonal major release cadence, with point releases provided when the need arises or monthly. Security releases are provided for the past 2 mayor releases and the current. | Libav is developed mostly under unix-like systems, but it can be compiled under most operating systems, including Microsoft Windows. The code is released adopting a seasonal major release cadence, with point releases provided when the need arises or monthly. Security releases are provided for the past 2 mayor releases and the current. | ||
Libav is free software, released under the GNU Lesser General Public License or GNU General Public License (depending on which sub-libraries one would include). | Libav is free software, released under the GNU Lesser General Public License or GNU General Public License (depending on which sub-libraries one would include). | ||
== Libav Components == | |||
=== Tools === | |||
* ''[[avconv]]'' is a command line tool to convert multimedia streams from a format to another. It supports direct capturing from hardware device and network sources and allow streaming over the network as well. | |||
* ''[[acserver]]'' is a barebone [[Hypertext Transfer Protocol|HTTP]] ([[Real Time Streaming Protocol|RTSP]] and [[Real Time Messaging Protocol|RTMP]] is being developed) multimedia streaming server for live broadcasts. Time shifting of live broadcast is also supported. | |||
* ''[[avplay]]'' is a simple media player based on [[Simple DirectMedia Layer|SDL]] and on the FFmpeg libraries. | |||
* ''[[qt-faststart]]'' is a [[MOV]] atoms reorderer useful to reformat quickly ISO Media streams so the codec information are on the start of the file instead of the end. | |||
=== Libraries === | |||
* ''[[libavcodec]]'' is a library containing all the FFmpeg audio/video encoders and decoders. Most codecs were developed from scratch to ensure best performance and high code reusability. | |||
* ''[[libavformat]]'' is a library containing demuxers and muxers for audio/video container formats. | |||
* ''[[libavutil]]'' is a helper library containing routines common to different parts of FFmpeg. | |||
* ''[[libswscale]]'' is a library containing video [http://en.wikipedia.org/wiki/Image_scaling image scaling] routines. | |||
* ''[[libavfilter]]'' is in development and is an API and library for video and audio filtering. | |||
==Api compatibility== | ==Api compatibility== |
Latest revision as of 19:15, 15 November 2011
Libav is a complete, cross-platform solution to record, convert and stream audio and video.
Libav includes the libavcodec audio/video codec library, a decoder/encoder codec-suit that forms the basis of most free and open source software multimedia programs.
Libav also contains libavformat, a library for multimedia container formats and libavfilter for video and audio filtering, libswscale for colorspace conversion and software scaling.
Among the tools provided avplay is a simple media player, avconv is extensive tool to capture, reencode/remux and stream multimedia contents, avprobe is a quite simple information extractor.
About the Libav project
Libav is a fork of the FFmpeg project and while it doesn't share the same development practices it shares the same aims.
Libav is developed mostly under unix-like systems, but it can be compiled under most operating systems, including Microsoft Windows. The code is released adopting a seasonal major release cadence, with point releases provided when the need arises or monthly. Security releases are provided for the past 2 mayor releases and the current. Libav is free software, released under the GNU Lesser General Public License or GNU General Public License (depending on which sub-libraries one would include).
Libav Components
Tools
- avconv is a command line tool to convert multimedia streams from a format to another. It supports direct capturing from hardware device and network sources and allow streaming over the network as well.
- acserver is a barebone HTTP (RTSP and RTMP is being developed) multimedia streaming server for live broadcasts. Time shifting of live broadcast is also supported.
- avplay is a simple media player based on SDL and on the FFmpeg libraries.
- qt-faststart is a MOV atoms reorderer useful to reformat quickly ISO Media streams so the codec information are on the start of the file instead of the end.
Libraries
- libavcodec is a library containing all the FFmpeg audio/video encoders and decoders. Most codecs were developed from scratch to ensure best performance and high code reusability.
- libavformat is a library containing demuxers and muxers for audio/video container formats.
- libavutil is a helper library containing routines common to different parts of FFmpeg.
- libswscale is a library containing video image scaling routines.
- libavfilter is in development and is an API and library for video and audio filtering.
Api compatibility
WIP