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Mark Thompson 27978155bc hwcontext: Add frame context mapping for nontrivial contexts
Some frames contexts are not usable without additional format-specific
state in hwctx.  This change adds new functions frames_derive_from and
frames_derive_to to initialise this state appropriately when deriving
a frames context which will require it to be set.
2017-04-30 16:13:56 +01:00
avbuild build: Generalize yasm/nasm-related variable names 2017-03-01 10:18:15 +01:00
avtools avconv: Support setting the hardware device to use when filtering 2017-04-30 16:13:50 +01:00
compat compat/atomics: add typecasts in atomic_compare_exchange_strong() 2016-12-08 15:53:58 -05:00
doc avconv: Support setting the hardware device to use when filtering 2017-04-30 16:13:50 +01:00
libavcodec vp9_raw_reorder_bsf: Remove a redundant allocation 2017-04-30 14:09:05 +01:00
libavdevice avfoundation: update to use AVCodecParameters 2017-04-26 11:47:31 -04:00
libavfilter filtfmts-test: Mark filter as const 2017-04-10 09:04:41 -04:00
libavformat mpeg4audio: Make avpriv_copy_pce_data() inline 2017-04-28 13:47:20 +02:00
libavresample Bump major versions of all libraries 2017-03-23 09:56:20 +01:00
libavutil hwcontext: Add frame context mapping for nontrivial contexts 2017-04-30 16:13:56 +01:00
libswscale swscale-test: const correctness 2017-04-24 16:10:05 +02:00
presets presets: spelling error in libvpx 1080p50_60 2011-10-22 00:28:56 +02:00
tests checkasm: hevc: Add a hevc_ prefix to the add_residual functions 2017-04-21 13:32:44 +03:00
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: Exclude gcc for the macOS target 2017-04-20 12:53:08 +02:00
Changelog Add ClearVideo decoder 2017-04-25 15:39:10 +02:00
configure configure: Fix sem_timedwait probe 2017-04-25 00:38:07 +02:00
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: Allow generating dependencies as a side-effect of assembling 2017-03-01 10:18:15 +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

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.