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Anton Khirnov 741b494fa8 h264: eliminate default_ref_list 
According to the spec, the reference list for a slice should be
constructed by first generating an initial (what we now call "default")
reference list and then optionally applying modifications to it.

Our code has an optimization where the initial reference list is
constructed for the first inter slice and then rebuilt for other slices
if needed. This, however, adds complexity to the code, requires an extra
2.5kB array in the codec context and there is no reason to think that it
has any positive effect on performance. Therefore, simplify the code by
generating the reference list from scratch for each slice.
2015-12-06 09:42:39 +01:00
compat w32pthreads: Map MemoryBarrier to __sync_synchronize on mingw 2015-10-30 20:15:11 +02:00
doc lavc: G.723.1 encoder 2015-11-30 10:58:46 -05:00
libavcodec h264: eliminate default_ref_list 2015-12-06 09:42:39 +01:00
libavdevice avfoundation: Simple capture 2015-11-26 10:55:28 +01:00
libavfilter vsrc_color: Drop unneeded variable 2015-11-30 10:58:46 -05:00
libavformat avi: Spin out the logic to position to the next non-interleaved stream 2015-12-02 23:49:10 +01:00
libavresample avresample: Document avresample_open() a little better 2015-11-05 17:25:46 +01:00
libavutil xtea: Add functions for little endian mode 2015-11-13 21:53:54 +02:00
libswscale lavu: Drop the {minus,plus}1 suffix from AVComponentDescriptor fields 2015-09-07 12:37:47 +02:00
presets presets: spelling error in libvpx 1080p50_60 2011-10-22 00:28:56 +02:00
tests checkasm: add HEVC MC tests 2015-12-05 21:11:21 +01:00
tools avpacket: Replace av_free_packet with av_packet_unref 2015-10-26 18:00:55 +01:00
.gitattributes Treat all '*.pnm' files as non-text file 2014-11-28 17:52:43 -05:00
.gitignore Checkasm: assembly testing and benchmarking tool 2015-07-12 16:39:07 +02:00
.travis.yml travis: Enable OSX integration 2015-11-17 16:51:00 +01:00
arch.mak ppc: vsx: Implement float_dsp 2015-05-31 12:07:11 +02:00
avconv_dxva2.c avconv_dxva2: add hevc support 2015-01-27 09:06:05 +01:00
avconv_filter.c avconv: Do not try to configure filter outputs without streams 2015-10-07 18:45:50 +02:00
avconv_opt.c avconv: add support for Intel QSV-accelerated transcoding 2015-10-16 20:01:37 +02:00
avconv_qsv.c avconv: add support for Intel QSV-accelerated transcoding 2015-10-16 20:01:37 +02:00
avconv_vda.c avconv: vda: Unlock the pixel buffer once it is accessed 2015-07-09 00:10:13 +02:00
avconv_vdpau.c avconv_vdpau: allocate video surface of VDPAU-specified size 2014-12-25 20:47:49 +01:00
avconv.c avconv: set packet duration for CFR video streams 2015-11-08 11:49:05 +01:00
avconv.h avconv: add support for Intel QSV-accelerated transcoding 2015-10-16 20:01:37 +02:00
avplay.c avpacket: Replace av_free_packet with av_packet_unref 2015-10-26 18:00:55 +01:00
avprobe.c avprobe: Unref the packet once it is used 2015-10-26 18:00:54 +01:00
Changelog lavf: G.723.1 muxer 2015-11-30 10:58:46 -05:00
cmdutils_common_opts.h avplay: Accept cpuflags option 2013-10-22 10:49:31 +02:00
cmdutils.c cmdutils: Check for and report the correct codec capability 2015-10-25 22:47:13 +01:00
cmdutils.h avconv: use read_file() for reading the 2pass stats 2015-07-19 09:37:11 +02:00
common.mak build: add Solaris symbol versioning 2015-10-11 15:42:36 +02:00
configure configure: Add -framework CoreVideo when building the avfoundation indev 2015-12-03 14:28:12 +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
library.mak build: Support executable only ldflags 2014-07-21 22:18:35 +02:00
LICENSE license: Mention that vf_interlace is GPL, not LGPL 2014-08-28 19:47:43 +02:00
Makefile configure: ObjC support 2015-11-26 10:39:15 +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 2014-12-01 07:51:14 -05:00
version.sh Drop git- prefix from version labels 2011-06-19 19:41:23 +01:00

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.