[FFmpeg-trac] #929(avcodec:new): AAC 5.1 channel decoding issue
FFmpeg
trac at avcodec.org
Fri Jan 20 23:11:21 CET 2012
#929: AAC 5.1 channel decoding issue
-------------------------------------+-----------------------------------
Reporter: kaijun61 | Owner:
Type: defect | Status: new
Priority: normal | Component: avcodec
Version: unspecified | Resolution:
Keywords: AAC | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-----------------------------------
Comment (by kaijun61):
it sounds like 5 channels not downmixed when compared with a DSP aac
codec.
ffmpeg -i test.mp4
ffmpeg version git-2012-01-20-003b81b Copyright (c) 2000-2012 the FFmpeg
developers
built on Jan 20 2012 21:40:59 with gcc 4.5.3 20110311 (prerelease)
configuration: --enable-shared --enable-pthreads --disable-stripping
--disable-gpl --disable-postproc --disable-avfilter --enable-swscale
--enable-swresample --enable-neon --enable-pic --enable-debug --enable-
ffmpeg --enable-ffplay --disable-avprobe --disable-avserver --cross-prefix
=arm-angstrom-linux-gnueabi- --prefix=/usr --disable-x11grab --disable-
libgsm --enable-libmp3lame --enable-libschroedinger --enable-libtheora
--enable-libvorbis --disable-libvpx --arch=arm --target-os=linux --enable-
cross-compile --disable-optimizations --extra-cflags=' -O0 -fno-omit-
frame-pointer -ggdb3 -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-
abi=softfp -mthumb-interwork -mno-thumb
--sysroot=/home/tang/Projects/OE/build/tmp/sysroots/armv7a-angstrom-linux-
gnueabi' --extra-ldflags='-Wl,-O1 -Wl,--hash-style=gnu'
--sysroot=/home/tang/Projects/OE/build/tmp/sysroots/armv7a-angstrom-linux-
gnueabi --enable-hardcoded-tables --cpu=cortex-a8
WARNING: library configuration mismatch
avutil configuration: --enable-shared --enable-pthreads --disable-
stripping --disable-gpl --disable-postproc --disable-avfilter --disable-
swscale --enable-neon --enable-pic --enable-debug --enable-ffmpeg
--disable-avplay --disable-avprobe --disable-avserver --cross-prefix=arm-
angstrom-linux-gnueabi- --prefix=/usr --disable-x11grab --disable-libgsm
--enable-libmp3lame --enable-libschroedinger --enable-libtheora --enable-
libvorbis --disable-libvpx --arch=arm --target-os=linux --enable-cross-
compile --disable-optimizations --extra-cflags=' -O0 -fno-omit-frame-
pointer -ggdb3 -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-
abi=softfp -mthumb-interwork -mno-thumb
--sysroot=/home/tang/Projects/OE/build/tmp/sysroots/armv7a-angstrom-linux-
gnueabi' --extra-ldflags='-Wl,-O1 -Wl,--hash-style=gnu'
--sysroot=/home/tang/Projects/OE/build/tmp/sysroots/armv7a-angstrom-linux-
gnueabi --enable-hardcoded-tables --cpu=cortex-a8
avcodec configuration: --enable-shared --enable-pthreads --disable-
stripping --disable-gpl --disable-postproc --disable-avfilter --disable-
swscale --enable-neon --enable-pic --enable-debug --enable-ffmpeg
--disable-avplay --disable-avprobe --disable-avserver --cross-prefix=arm-
angstrom-linux-gnueabi- --prefix=/usr --disable-x11grab --disable-libgsm
--enable-libmp3lame --enable-libschroedinger --enable-libtheora --enable-
libvorbis --disable-libvpx --arch=arm --target-os=linux --enable-cross-
compile --disable-optimizations --extra-cflags=' -O0 -fno-omit-frame-
pointer -ggdb3 -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-
abi=softfp -mthumb-interwork -mno-thumb
--sysroot=/home/tang/Projects/OE/build/tmp/sysroots/armv7a-angstrom-linux-
gnueabi' --extra-ldflags='-Wl,-O1 -Wl,--hash-style=gnu'
--sysroot=/home/tang/Projects/OE/build/tmp/sysroots/armv7a-angstrom-linux-
gnueabi --enable-hardcoded-tables --cpu=cortex-a8
avformat configuration: --enable-shared --enable-pthreads --disable-
stripping --disable-gpl --disable-postproc --disable-avfilter --disable-
swscale --enable-neon --enable-pic --enable-debug --enable-ffmpeg
--disable-avplay --disable-avprobe --disable-avserver --cross-prefix=arm-
angstrom-linux-gnueabi- --prefix=/usr --disable-x11grab --disable-libgsm
--enable-libmp3lame --enable-libschroedinger --enable-libtheora --enable-
libvorbis --disable-libvpx --arch=arm --target-os=linux --enable-cross-
compile --disable-optimizations --extra-cflags=' -O0 -fno-omit-frame-
pointer -ggdb3 -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-
abi=softfp -mthumb-interwork -mno-thumb
--sysroot=/home/tang/Projects/OE/build/tmp/sysroots/armv7a-angstrom-linux-
gnueabi' --extra-ldflags='-Wl,-O1 -Wl,--hash-style=gnu'
--sysroot=/home/tang/Projects/OE/build/tmp/sysroots/armv7a-angstrom-linux-
gnueabi --enable-hardcoded-tables --cpu=cortex-a8
libavutil 51. 34.101 / 51. 34.101
libavcodec 53. 57.105 / 53. 57.105
libavformat 53. 30.100 / 53. 30.100
libavdevice 53. 4.100 / 53. 4.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isom3gp63g2a3gp4
creation_time : 2005-03-06 11:05:59
Duration: 00:01:17.35, start: 0.000000, bitrate: 321 kb/s
Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 96000 Hz, 5.0, s16,
320 kb/s
Metadata:
creation_time : 2005-03-06 11:05:59
handler_name : soun
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/929#comment:2>
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