mirror of https://git.ffmpeg.org/ffmpeg.git
c3c646a868
Japanese DTV uses some non standard extensions in AAC audio. One example is 'dual mono', which combines two independent audio into one stereo stream, storing them in left and right channels respectively. Historically, dual mono audio has been used for multi-lingual audio, one for local/native language, and another for english, and usually the "main" (local language) channel should be output without any user interactions. The frames of those dual mono audio are allowed to set ADTS channel_config field to 0, and just contain two SCE's *WITHOUT* PCE, which is a non standard extension by Japanese DTV standard. (ref. ARIB STD-B32 PartII 5.2.3) This patch adds an AVPacket side data, AV_PKT_DATA_JP_DUALMONO, which indicates that the AVPacket is likely to contain an audio frame with the above dual mono extension, and has the parameter to specify the desired channel selection in that case. It also makes aacdec to detect dual mono and output just the desired channel when this side data is attached. Signed-off-by: Akihiro Tsukada <atsukada@users.sourceforge.net> Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
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| compat | ||
| doc | ||
| libavcodec | ||
| libavdevice | ||
| libavfilter | ||
| libavformat | ||
| libavresample | ||
| libavutil | ||
| libpostproc | ||
| libswresample | ||
| libswscale | ||
| mt-work | ||
| presets | ||
| tests | ||
| tools | ||
| .gitignore | ||
| COPYING.GPLv2 | ||
| COPYING.GPLv3 | ||
| COPYING.LGPLv2.1 | ||
| COPYING.LGPLv3 | ||
| CREDITS | ||
| Changelog | ||
| Doxyfile | ||
| INSTALL | ||
| LICENSE | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
| RELEASE | ||
| arch.mak | ||
| cmdutils.c | ||
| cmdutils.h | ||
| cmdutils_common_opts.h | ||
| common.mak | ||
| configure | ||
| ffmpeg.c | ||
| ffmpeg.h | ||
| ffmpeg_filter.c | ||
| ffmpeg_opt.c | ||
| ffplay.c | ||
| ffprobe.c | ||
| ffserver.c | ||
| library.mak | ||
| version.sh | ||
README
FFmpeg README ------------- 1) Documentation ---------------- * Read the documentation in the doc/ directory in git. You can also view it online at http://ffmpeg.org/documentation.html 2) Licensing ------------ * See the LICENSE file. 3) Build and Install -------------------- * See the INSTALL file.