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Diego Biurrun 21cca00dfe build: Explicitly disable external libraries when not explicitly enabled 
Leaving those variables in an undefined state allows them getting implicitly
enabled when they are declared as weak dependencies of other components.
In that case, the library check is not run and required linker flags are not
added, resulting in a failing build.

Fixes linking when enabling libfreetype without libfontconfig.
2017-02-28 13:00:20 +01:00
avbuild build: Add version numbers to "Requires" entries in pkg-config files 2016-12-28 17:41:54 +01:00
avtools build: Move cli tool sources to a separate subdirectory 2017-02-21 16:10:51 +01:00
compat compat/atomics: add typecasts in atomic_compare_exchange_strong() 2016-12-08 15:53:58 -05:00
doc build: Drop DOC_ prefix from EXAMPLES-related variables 2017-02-27 13:57:35 +01:00
libavcodec nvenc: Fix the preset mapping list 2017-02-28 11:54:02 +01:00
libavdevice build: Generate pkg-config files from Make and not from configure 2016-12-22 12:30:54 +01:00
libavfilter vf_deinterlace_vaapi: Create filter buffer after context 2017-02-17 23:20:39 +00:00
libavformat rtsp: Lazily set up the pollfd array once 2017-02-28 12:54:04 +01:00
libavresample Mark some arrays that never change as const. 2017-02-01 10:42:59 +01:00
libavutil aarch64: Add parentheses around the offset parameter in movrel 2017-02-16 09:56:11 +02:00
libswscale swscale-test: const correctness for pointer variable 2017-01-24 13:03:57 +01:00
presets presets: spelling error in libvpx 1080p50_60 2011-10-22 00:28:56 +02:00
tests fate: Rename WMV8_DRM decoder tests to WMV3_DRM 2017-02-28 13:00:20 +01:00
tools build: Move entries related to building TOOLS to a subdirectory Makefile 2016-12-07 11:02:31 +01:00
.gitattributes Treat all '*.pnm' files as non-text file 2014-11-28 17:52:43 -05:00
.gitignore build: Ignore generated .version files 2017-02-03 11:37:53 +01:00
.travis.yml travis: Enable OSX integration 2015-11-17 16:51:00 +01:00
Changelog vaapi_encode: Add VP8 support 2017-01-30 23:03:46 +00:00
configure build: Explicitly disable external libraries when not explicitly enabled 2017-02-28 13:00:20 +01:00
COPYING.GPLv2 Rename COPYING.GPL --> COPYING.GPLv2 and COPYING.LGPL --> COPYING.LGPLv2.1. 2009-06-05 09:51:31 +00:00
COPYING.GPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
COPYING.LGPLv2.1 cosmetics: Delete empty lines at end of file. 2012-02-09 12:26:45 +01:00
COPYING.LGPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
CREDITS partially rename FFmpeg to Libav 2011-03-16 21:54:39 +01:00
INSTALL doc: clarify configure features 2011-04-07 02:54:12 +02:00
LICENSE Remove the legacy X11 screen grabber 2016-07-29 19:03:10 +02:00
Makefile build: Move cli tool sources to a separate subdirectory 2017-02-21 16:10:51 +01:00
README doc: Add more information in the README 2014-08-16 00:49:22 +02:00
README.md doc: Add travis badge 2015-09-14 00:19:08 +02:00
RELEASE Make the RELEASE file match with the most recent tag 2016-10-14 13:52:51 -04:00

README.md

Libav

Build Status

Libav is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libavresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • avconv is a command line toolbox to manipulate, convert and stream multimedia content.
  • avplay is a minimalistic multimedia player.
  • avprobe is a simple analisys tool to inspect multimedia content.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Conding examples are available in the doc/example directory.

License

Libav codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.