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addr-see-the-website@aetey.se 7da9f45231 cinepakenc: fixes and improvements 
version 2013-02-08 Rl
- fixes/optimization in multistrip encoding and codebook size choice,
  quality/bitrate is now better than that of the binary proprietary encoder

version 2013-02-12 Rl
- separated codebook training sets, avoided the transfer of wasted bytes,
  which yields both better quality and smaller files
- now using the correct colorspace (TODO: move conversion to libswscale)

version 2013-02-14 Rl "Valentine's Day" version:
- made strip division more robust
- minimized bruteforcing the number of strips,
  (costs some R/D but speeds up compession a lot), the heuristic
  assumption is that score as a function of the number of strips has
  one wide minimum which moves slowly, of course not fully true
- simplified codebook generation,
  the old code was meant for other optimizations than we actually do
- optimized the codebook generation / error estimation for MODE_MC

version 2013-04-28 Rl
- bugfixed codebook optimization logic

version 2014-01-20 Rl
- made the encoder compatible with vintage decoders
  and added some yet unused code for possible future
  incremental codebook updates
- fixed a small memory leak

version 2014-01-21 Rl
- believe it or not, now we get even smaller files, with better quality
  (which means I missed an optimization earlier :)

Signed-off-by: Diego Biurrun <diego@biurrun.de>
2017-07-05 13:05:54 +02:00
avbuild build: Add an option for passing linker flags to the shared library build 2017-06-22 13:54:34 +02:00
avtools avconv_hw: Free device on initialisation failure 2017-06-18 17:01:49 +01:00
compat compat/atomics: add typecasts in atomic_compare_exchange_strong() 2016-12-08 15:53:58 -05:00
doc Add Cinepak encoder 2017-07-05 13:05:54 +02:00
libavcodec cinepakenc: fixes and improvements 2017-07-05 13:05:54 +02:00
libavdevice avfoundation: update to use AVCodecParameters 2017-04-26 11:47:31 -04:00
libavfilter af_bs2b: Add missing casts to complex pointer assignments 2017-06-21 12:24:13 +02:00
libavformat os_support: Use HAVE_UWP instead of manually checking WINAPI_FAMILY 2017-07-05 13:55:12 +03:00
libavresample Bump major versions of all libraries 2017-03-23 09:56:20 +01:00
libavutil d3d11va: Check WINAPI_FAMILY instead of HAVE_LOADLIBRARY 2017-07-05 13:55:11 +03:00
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 movenc-test: Add tests for negative cts offsets 2017-05-15 14:08:53 +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 Cinepak encoder 2017-07-05 13:05:54 +02:00
configure d3d11va: Check WINAPI_FAMILY instead of HAVE_LOADLIBRARY 2017-07-05 13:55:11 +03:00
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.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.