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Mark Thompson 8a62d2c28f vaapi_encode: Maintain a pool of bitstream output buffers 
Previously we would allocate a new one for every frame.  This instead
maintains an AVBufferPool of them to use as-needed.

Also makes the maximum size of an output buffer adapt to the frame
size - the fixed upper bound was a bit too easy to hit when encoding
large pictures at high quality.
2016-06-26 19:40:56 +01:00
compat jack: Support OSX 2016-03-31 18:03:21 +02:00
doc avconv: buffer the packets written while the muxer is not initialized 2016-06-25 11:15:54 +02:00
libavcodec vaapi_encode: Maintain a pool of bitstream output buffers 2016-06-26 19:40:56 +01:00
libavdevice avdevice: Ignore timefilter test program 2016-06-14 11:14:06 +02:00
libavfilter lavfi: set the link hwframes context before configuring the dst input 2016-06-25 11:11:46 +02:00
libavformat librtmp: Avoid an infiniloop setting connection arguments 2016-06-22 06:37:33 +02:00
libavresample build: Change structure of the linker version script templates 2016-05-29 16:43:11 +02:00
libavutil hwcontext_vaapi: Return all formats for constraints without config 2016-06-21 20:42:22 +01:00
libswscale build: Change structure of the linker version script templates 2016-05-29 16:43:11 +02:00
presets presets: spelling error in libvpx 1080p50_60 2011-10-22 00:28:56 +02:00
tests checkasm: Issue emms after benchmarking functions 2016-06-21 22:09:29 +03:00
tools tools: Port to codec parameters API 2016-05-17 11:16:26 +02:00
.gitattributes Treat all '*.pnm' files as non-text file 2014-11-28 17:52:43 -05:00
.gitignore build: Ignore generated mapfile and remove it on distclean 2016-05-27 11:27:24 +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: use the hwcontext device creation API 2016-05-26 15:40:34 +02:00
avconv_filter.c avconv: Remove hw_device_ctx output filter reinit hack 2016-06-26 19:40:56 +01:00
avconv_opt.c avconv: init filtergraphs only after we have a frame on each input 2016-06-25 12:04:32 +02:00
avconv_qsv.c avconv_qsv: use the device creation API 2016-06-25 12:11:07 +02:00
avconv_vaapi.c avconv_vaapi: use the hwcontext device creation API 2016-05-26 15:40:34 +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: use the hwcontext device creation API 2016-05-26 15:40:34 +02:00
avconv.c avconv: pass the hwaccel frames context to the decoder 2016-06-25 12:10:42 +02:00
avconv.h avconv: init filtergraphs only after we have a frame on each input 2016-06-25 12:04:32 +02:00
avplay.c Use AVFrame.pts instead of deprecated pkt_pts. 2016-06-21 19:54:42 +02:00
avprobe.c avprobe: Print stereo3d information 2016-05-17 12:25:27 -04:00
Changelog lavfi: add a QSV scaling filter 2016-06-21 19:53:38 +02:00
cmdutils_common_opts.h avplay: Accept cpuflags option 2013-10-22 10:49:31 +02:00
cmdutils.c avconv: switch to the new BSF API 2016-03-20 08:15:01 +01:00
cmdutils.h avconv: use read_file() for reading the 2pass stats 2015-07-19 09:37:11 +02:00
common.mak build: Simplify postprocessing of linker version script files 2016-05-29 16:49:16 +02:00
configure lavfi: add a QSV scaling filter 2016-06-21 19:53:38 +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: Simplify postprocessing of linker version script files 2016-05-29 16:49:16 +02:00
LICENSE LICENSE: Fix silly typo 2016-06-14 11:14:06 +02:00
Makefile build: Simplify postprocessing of linker version script files 2016-05-29 16:49:16 +02:00
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.