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Christophe Gisquet c49cbecbae dnxhddec: Decode and use interlace mb flag 
This bit is 1 in some samples, and seems to coincide with interlaced
mbs and CID1260. 2008 specs do not know about it, and maintain qscale
is 11 bits. This looks oversized, but may help larger bitdepths.

Currently, it leads to an obviously incorrect qscale value, meaning
its syntax is shifted by 1. However, reading 11 bits also leads to
obviously incorrect decoding: qscale seems to be 10 bits.

However, as most profiles still have 11bits qscale, the feature is
restricted to the CID1260 profile (this flag is dependent on
a higher-level flag located in the header).

The encoder writes 12 bits of syntax, last and first bits always 0,
which is now somewhat inconsistent with the decoder, but ends up with
the same effect (progressive + reserved bit).

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
2015-09-29 14:33:01 +02:00
compat use a wrapper script to call MS link.exe to avoid mixing with /usr/bin/link.exe 2015-07-24 18:21:22 +03:00
doc lavc: Make AVPacket.duration int64, and deprecate convergence_duration 2015-09-29 14:33:00 +02:00
libavcodec dnxhddec: Decode and use interlace mb flag 2015-09-29 14:33:01 +02:00
libavdevice Bump major versions of all libraries 2015-08-28 16:04:28 +02:00
libavfilter lavfi: do not exclude hwaccel formats from ff_all_formats() 2015-09-28 15:42:38 +02:00
libavformat riff: Add support for RV40 codec in AVI 2015-09-29 14:33:01 +02:00
libavresample avresample: Remove an unused variable 2015-09-29 14:33:01 +02:00
libavutil mips: intreadwrite: Only execute that code for mips r1 or r2 2015-09-29 11:10:37 +02:00
libswscale lavu: Drop the {minus,plus}1 suffix from AVComponentDescriptor fields 2015-09-07 12:37:47 +02:00
presets
tests checkasm/x86: Correctly handle variadic functions 2015-09-28 14:25:59 +02:00
tools tools: Drop a stale header 2015-08-31 21:37:18 +02:00
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.travis.yml travis: fix dependencies 2015-09-12 12:29:27 +02:00
arch.mak
avconv_dxva2.c
avconv_filter.c avconv_filter: Use full named options 2015-09-13 17:34:45 +02:00
avconv_opt.c avconv: Make the private options discovery more manifest 2015-09-29 14:33:01 +02:00
avconv_vda.c
avconv_vdpau.c
avconv.c lavc: Enable side data only packets by default 2015-09-12 13:38:31 +02:00
avconv.h
avplay.c lavc: AV-prefix all codec capabilities 2015-07-27 15:24:58 +01:00
avprobe.c
Changelog DXV decoder 2015-09-02 22:22:02 +02:00
cmdutils_common_opts.h
cmdutils.c lavc: AV-prefix all codec capabilities 2015-07-27 15:24:58 +01:00
cmdutils.h
common.mak
configure configure: mips: Support mips r6, r2 and r1 2015-09-29 11:10:37 +02:00
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README.md doc: Add travis badge 2015-09-14 00:19:08 +02:00
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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.