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Martin Storsjö 1b90433f79 libfdk-aacdec: Always decode into an intermediate buffer 
For ADTS streams, the output format (number of channels, frame size)
can change at any point (with the latest version of fdk-aac, the decoder
seems to change format after a handful of frames, not outputting the
right format immediately, for cases that worked fine with the earlier
version of the lib).

Previously, the decoder decoded straight into the output frame once the
number of channels and frame size was known. This obviously does not
work if the number of channels or frame size changes.

The alternative would be to allocate the AVFrame with the maximum number
of channels and frame size, and change them afterward decoding into it,
but that may cause confusion to users e.g. of the get_buffer callback.
This solution should be more robust.

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
2015-08-16 00:17:49 +03:00
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 des: add av_des_alloc() 2015-07-31 09:04:12 +02:00
libavcodec libfdk-aacdec: Always decode into an intermediate buffer 2015-08-16 00:17:49 +03:00
libavdevice lavc: Consistently prefix input buffer defines 2015-07-27 15:24:59 +01:00
libavfilter x86inc: Drop SECTION_TEXT macro 2015-08-11 11:12:01 +02:00
libavformat movenc: Add a new flag for writing global sidx indexes for dash 2015-08-12 13:41:46 +03:00
libavresample x86inc: Drop SECTION_TEXT macro 2015-08-11 11:12:01 +02:00
libavutil x86inc: Various minor backports from x264 2015-08-13 07:46:24 +02:00
libswscale ppc: Restrict some Altivec implementations to Big Endian 2015-05-31 12:07:11 +02:00
presets presets: spelling error in libvpx 1080p50_60 2011-10-22 00:28:56 +02:00
tests checkasm: Remove unnecessary include 2015-08-11 11:00:53 +02:00
tools cws2fws: Close file handles on error 2015-06-12 17:02:49 +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
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: split creating and (re-)configuring complex filtergraphs 2015-07-19 09:38:53 +02:00
avconv_opt.c lavc: AV-prefix all codec flags 2015-07-27 15:24:58 +01:00
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: Consistently prefix input buffer defines 2015-07-27 15:24:59 +01:00
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 lavc: add Intel libmfx-based HEVC decoder. 2015-07-25 17:37:01 +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: arm: Assume softfp ABI on darwin 2015-08-16 00:17:22 +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
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 more information in the README 2014-08-16 00:49:22 +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

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.