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Gaullier Nicolas 3eae34d50f avformat/mxfenc: set/force channelcount in MXF D-10 
There are interoperability issues with D-10 related to the channelcount property in the generic sound essence descriptor.

On one side, SMPTE 386M requires channel count to be 4 or 8, other values being prohibited.
The most widespread value is 8, which seems straightforward as it is the actual size of the allocated structure/disk space.
At the end, it appears that some vendors or workflows do require this descriptor to be 8, and otherwise just "fail".

On the other side, at least AVID and ffmpeg do write/set the channel count to the exact number of channels really "used",
usually 2 or 4, or any other value. And on the decoding side, ffmpeg (for example) make use of the channel count for probing
and only expose this limited number of audio streams
(which make sense but has strong impact on ffmpeg command line usage, output, and downstream workflow).

At the end, I find it pretty usefull to simply give ffmpeg the ability to force/set the channel count to any value the user wants.
(there are turnaround using complex filters, pans, amerge etc., but it is quite boring and requires the command line to be adapted to the input file properties)

Reviewed-by: Matthieu Bouron <matthieu.bouron@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-06-26 01:01:22 +02:00
compat compat/w32pthreads: add return value to pthread_cond_init(). 2014-05-26 11:33:42 +02:00
doc doc/build_system: document examples and config targets 2014-06-25 01:00:05 +02:00
libavcodec avcodec/x86/hevc_idct: fix function name in comment 2014-06-25 18:22:25 +02:00
libavdevice lavd/avfoundation: Support user selected pixel formats and pixel format autoselection. 2014-06-12 21:31:25 +02:00
libavfilter avfilter/x86/vf_pullup: fix old typo 2014-06-25 18:22:48 +02:00
libavformat avformat/mxfenc: set/force channelcount in MXF D-10 2014-06-26 01:01:22 +02:00
libavresample Merge commit 'b2d45654220503224aa94e78cdff19ec624e9342' 2014-05-29 01:23:22 +02:00
libavutil Merge commit 'ab72eda15e98197cf148abc08574206cfde0d9b0' 2014-06-24 01:09:38 +02:00
libpostproc
libswresample swr: remove another forgotten division in DSP function. 2014-06-22 05:20:22 +02:00
libswscale swscale/x86/input: prevent RGB32_TO_Y_FN from reading into the padding 2014-06-22 03:09:28 +02:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests ffprobe: add color_range and color_space to stream output 2014-06-24 00:35:16 +02:00
tools tools/fourcc2pixfmt: Avoid using non public AV_PIX_FMT_NB 2014-06-10 04:00:06 +02:00
.gitignore Remove avserver. 2014-06-18 14:55:28 +02:00
arch.mak
Changelog avfilter: add hqx filter (hq2x, hq3x, hq4x) 2014-06-21 19:22:55 +02:00
cmdutils_common_opts.h ffmpeg: add -devices param 2014-05-28 03:52:50 +02:00
cmdutils_opencl.c ffmpeg: Use av_gettime_relative() 2014-05-19 02:35:07 +02:00
cmdutils.c version string: add copyright line to version string 2014-06-16 10:24:28 -08:00
cmdutils.h ffmpeg: add -devices param 2014-05-28 03:52:50 +02:00
common.mak Merge commit 'afe176265480880e1f702c96a8ba434b0d88728b' 2014-05-20 03:33:30 +02:00
configure Merge commit 'c67b449bebbe0b35c73b203683e77a0a649bc765' 2014-06-23 13:31:26 +02:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
ffmpeg_dxva2.c
ffmpeg_filter.c ffmpeg: Fix choose_pixel_fmt() so it uses the correct encoding context 2014-06-01 17:16:08 +02:00
ffmpeg_opt.c ffmpeg_opt: Dont exit on avformat_find_stream_info() failure if there are streams 2014-06-18 21:35:54 +02:00
ffmpeg_vda.c
ffmpeg_vdpau.c
ffmpeg.c ffmpeg: fix reinitializing with threads while flushing 2014-06-23 00:09:09 +02:00
ffmpeg.h ffmpeg: support setting AVStream.discard 2014-06-07 21:26:22 +02:00
ffplay.c ffplay: decrease audio_diff_threshold 2014-06-24 21:59:21 +02:00
ffprobe.c ffprobe: add color_range and color_space to stream output 2014-06-24 00:35:16 +02:00
ffserver.c
INSTALL.md INSTALL: add markdown syntax 2014-05-28 22:38:38 +02:00
library.mak
LICENSE.md LICENCE: add markdown syntax 2014-05-28 22:38:28 +02:00
MAINTAINERS avfilter: add hqx filter (hq2x, hq3x, hq4x) 2014-06-21 19:22:55 +02:00
Makefile Remove avserver. 2014-06-18 14:55:28 +02:00
README.md README: add markdown syntax 2014-05-28 22:38:11 +02:00
RELEASE
version.sh

README.md

FFmpeg README

  1. Documentation
  1. Licensing
  • See the LICENSE file.
  1. Build and Install
  • See the INSTALL file.