[FFmpeg-trac] #9964(avcodec:new): ffplay: wrong channel mapping in decoded 5.1 ATRAC3plus stream
FFmpeg
trac at avcodec.org
Sat Oct 8 16:19:48 EEST 2022
#9964: ffplay: wrong channel mapping in decoded 5.1 ATRAC3plus stream
-------------------------------------+-------------------------------------
Reporter: ptalarbvorm | Owner: (none)
Type: defect | Status: new
Priority: normal | Component: avcodec
Version: unspecified | Resolution:
Keywords: atrac3plus, | Blocked By:
multichannel, channel-layout |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Description changed by ptalarbvorm:
Old description:
> Summary of the bug:
>
> When decoding a 5.1 atrac3plus stream (container = .WAV),
> ffplay sends the last 3 channels to the wrong speakers:
> the back-left channel is sent to the LFE speaker, the back-right channel
> to the back-left speaker, and the LFE channel goes to the back-right
> speaker.
> I've uploaded an archive containing a test file and its uncompressed-PCM
> source to MediaFire:
>
> https://www.mediafire.com/file/qazbkif0xwf60fp/atrac3plus-
> multichsample.7z/file
>
> How to reproduce:
> {{{
> % ffplay ATRAC3plus-5p1.wav -autoexit
> ffplay version N-108492-gb92e14147f-20221004 Copyright (c) 2003-2022 the
> FFmpeg developers
> built with gcc 12.1.0 (crosstool-NG 1.25.0.55_3defb7b)
> configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static
> --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32-
> --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3
> --disable-debug --disable-w32threads --enable-pthreads --enabl
> e-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-
> libfribidi --enable-gmp --enable-lzma --enable-fontconfig -
> -enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf
> --disable-libxcb --disable-xlib --enable-amf --enable-liba
> om --enable-libaribb24 --enable-avisynth --enable-libdav1d --enable-
> libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cu
> da-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-
> libass --enable-libbluray --enable-libjxl --enable-libmp3la
> me --enable-libopus --enable-librist --enable-libssh --enable-libtheora
> --enable-libvpx --enable-libwebp --enable-lv2 --enable-l
> ibmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
> libopenh264 --enable-libopenjpeg --enable-libopenmpt --enab
> le-librav1e --enable-librubberband --enable-schannel --enable-sdl2
> --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-
> libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-
> libvidstab --enable-vulkan --enable-libshaderc --enable-
> libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-
> libxvid --enable-libzimg --enable-libzvbi --extra-cflags
> =-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-
> ldexeflags= --extra-libs=-lgomp --extra-version=20221004
>
> libavutil 57. 38.100 / 57. 38.100
> libavcodec 59. 50.100 / 59. 50.100
> libavformat 59. 34.100 / 59. 34.100
> libavdevice 59. 8.101 / 59. 8.101
> libavfilter 8. 49.101 / 8. 49.101
> libswscale 6. 8.112 / 6. 8.112
> libswresample 4. 9.100 / 4. 9.100
> libpostproc 56. 7.100 / 56. 7.100
> Input #0, wav, from 'ATRAC3plus-5p1.wav':= 0KB sq= 0B f=0/0
> Duration: 00:00:05.84, bitrate: 517 kb/s
> Stream #0:0: Audio: atrac3p, 48000 Hz, 5.1, fltp, 513 kb/s
> 5.82 M-A: -0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
> }}}
>
> Patches should be submitted to the ffmpeg-devel mailing list and not this
> bug tracker.
New description:
Summary of the bug:
When decoding a 5.1 atrac3plus stream (container = .WAV),
ffplay sends the last 3 channels to the wrong speakers:
the back-left channel is sent to the LFE speaker, the back-right channel
to the back-left speaker, and the LFE channel goes to the back-right
speaker.
I've uploaded an archive containing a test file and its uncompressed-PCM
source to MediaFire:
https://www.mediafire.com/file/qazbkif0xwf60fp/atrac3plus-
multichsample.7z/file
How to reproduce:
{{{
% ffplay ATRAC3plus-5p1.wav -autoexit
ffplay version N-108492-gb92e14147f-20221004 Copyright (c) 2003-2022 the
FFmpeg developers
built with gcc 12.1.0 (crosstool-NG 1.25.0.55_3defb7b)
configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static
--pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32-
--arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3
--disable-debug --disable-w32threads --enable-pthreads --enabl
e-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-
libfribidi --enable-gmp --enable-lzma --enable-fontconfig -
-enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf
--disable-libxcb --disable-xlib --enable-amf --enable-liba
om --enable-libaribb24 --enable-avisynth --enable-libdav1d --enable-
libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cu
da-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-
libass --enable-libbluray --enable-libjxl --enable-libmp3la
me --enable-libopus --enable-librist --enable-libssh --enable-libtheora
--enable-libvpx --enable-libwebp --enable-lv2 --enable-l
ibmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
libopenh264 --enable-libopenjpeg --enable-libopenmpt --enab
le-librav1e --enable-librubberband --enable-schannel --enable-sdl2
--enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-
libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-
libvidstab --enable-vulkan --enable-libshaderc --enable-
libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-
libxvid --enable-libzimg --enable-libzvbi --extra-cflags
=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-
ldexeflags= --extra-libs=-lgomp --extra-version=20221004
libavutil 57. 38.100 / 57. 38.100
libavcodec 59. 50.100 / 59. 50.100
libavformat 59. 34.100 / 59. 34.100
libavdevice 59. 8.101 / 59. 8.101
libavfilter 8. 49.101 / 8. 49.101
libswscale 6. 8.112 / 6. 8.112
libswresample 4. 9.100 / 4. 9.100
libpostproc 56. 7.100 / 56. 7.100
Input #0, wav, from 'ATRAC3plus-5p1.wav':= 0KB sq= 0B f=0/0
Duration: 00:00:05.84, bitrate: 517 kb/s
Stream #0:0: Audio: atrac3p, 48000 Hz, 5.1, fltp, 513 kb/s
5.82 M-A: -0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
}}}
'''P.S.:''' I have just decompressed the test file with '''ffmpeg''' and
confirmed that the result also has a wrong channel-mapping, whereas the
""official"" decoder '''PS3at3tool.exe''' (by Sony) preserves the correct
channel-mapping of the original uncompressed source.
{{{
ffmpeg -i ATRAC3plus-5p1.wav out.wav
ffmpeg version 5.1.1-full_build-www.gyan.dev Copyright (c) 2000-2022 the
FFmpeg developers
built with gcc 12.1.0 (Rev2, Built by MSYS2 project)
configuration: --enable-gpl --enable-version3 --enable-static --disable-
w32threads --disable-autodetect --enable-fontconfig --
enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib
--enable-lzma --enable-libsnappy --enable-zlib --enabl
e-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-
avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --
enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi
--enable-librav1e --enable-libsvtav1 --enable-libwebp --en
able-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-
libaom --enable-libopenjpeg --enable-libvpx --enable-m
ediafoundation --enable-libass --enable-frei0r --enable-libfreetype
--enable-libfribidi --enable-liblensfun --enable-libvidstab
--enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm
--enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nven
c --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libshaderc
--enable-vulkan --enable-libplacebo --enable-opencl --enab
le-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt
--enable-libopencore-amrwb --enable-libmp3lame --enable-libsh
ine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc
--enable-libilbc --enable-libgsm --enable-libopencore-amrnb -
-enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa
--enable-libbs2b --enable-libflite --enable-libmysofa --ena
ble-librubberband --enable-libsoxr --enable-chromaprint
libavutil 57. 28.100 / 57. 28.100
libavcodec 59. 37.100 / 59. 37.100
libavformat 59. 27.100 / 59. 27.100
libavdevice 59. 7.100 / 59. 7.100
libavfilter 8. 44.100 / 8. 44.100
libswscale 6. 7.100 / 6. 7.100
libswresample 4. 7.100 / 4. 7.100
libpostproc 56. 6.100 / 56. 6.100
Input #0, wav, from 'ATRAC3plus-5p1.wav':
Duration: 00:00:05.84, bitrate: 517 kb/s
Stream #0:0: Audio: atrac3p, 48000 Hz, 5.1, fltp, 513 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (atrac3p (atrac3plus) -> pcm_s16le (native))
Press [q] to stop, [?] for help
Output #0, wav, to 'out.wav':
Metadata:
ISFT : Lavf59.27.100
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 5.1,
s16, 4608 kb/s
Metadata:
encoder : Lavc59.37.100 pcm_s16le
size= 3312kB time=00:00:05.88 bitrate=4608.1kbits/s speed=71.4x
video:0kB audio:3312kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.003008%
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9964#comment:1>
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