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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 presets: spelling error in libvpx 1080p50_60 2011-10-22 00:28:56 +02:00
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
.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: fix dependencies 2015-09-12 12:29:27 +02:00
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_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: 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 lavc: Enable side data only packets by default 2015-09-12 13:38:31 +02:00
avconv.h Add a quality factor packet side data 2015-07-20 15:06:47 +01:00
avplay.c lavc: AV-prefix all codec capabilities 2015-07-27 15:24:58 +01:00
avprobe.c avprobe: Print the display matrix from per-stream sidedata 2015-05-02 22:09:09 +03:00
Changelog DXV decoder 2015-09-02 22:22:02 +02:00
cmdutils_common_opts.h avplay: Accept cpuflags option 2013-10-22 10:49:31 +02:00
cmdutils.c lavc: AV-prefix all codec capabilities 2015-07-27 15:24:58 +01:00
cmdutils.h avconv: use read_file() for reading the 2pass stats 2015-07-19 09:37:11 +02:00
common.mak checkasm: Always link statically 2015-07-21 23:22:42 +02:00
configure configure: mips: Support mips r6, r2 and r1 2015-09-29 11:10:37 +02:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1 cosmetics: Delete empty lines at end of file. 2012-02-09 12:26:45 +01:00
COPYING.LGPLv3
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 checkasm: Always link statically 2015-07-21 23:22:42 +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.