[FFmpeg-trac] #1149(undetermined:new): wrong channels / poor playback for 7 channel dts

[FFmpeg]

#1149: wrong channels / poor playback for 7 channel dts
-------------------------------------+-------------------------------------
             Reporter:  fro          |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by fro):

 {{{
 $ ffmpeg -i lotr_5.1_768.dts out.wav
 ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
   built on Mar 28 2012 23:57:36 with gcc 4.5.3
   configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc
 --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar
 --optflags='-march=native -O2 -pipe' --extra-cflags='-march=native -O2
 -pipe' --extra-cxxflags='-march=native -O2 -pipe' --disable-static
 --enable-gpl --enable-version3 --enable-postproc --enable-avfilter
 --disable-stripping --disable-debug --disable-doc --disable-network
 --disable-vdpau --enable-gnutls --enable-libmp3lame --enable-libvo-aacenc
 --enable-libvo-amrwbenc --enable-libtheora --enable-libvorbis --enable-
 libx264 --enable-libxvid --enable-libdc1394 --enable-openal --disable-
 indev=v4l --disable-indev=v4l2 --disable-indev=jack --enable-x11grab
 --enable-libfreetype --enable-pthreads --enable-libopencore-amrwb
 --enable-libopencore-amrnb --enable-libmodplug --enable-libspeex
 --disable-amd3dnow --disable-amd3dnowext --disable-altivec --disable-avx
 --disable-vis --disable-neon --cpu=host --enable-hardcoded-tab  libavutil
 51. 35.100 / 51. 35.100
   libavcodec     53. 61.100 / 53. 61.100
   libavformat    53. 32.100 / 53. 32.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 61.100 /  2. 61.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  6.100 /  0.  6.100
   libpostproc    52.  0.100 / 52.  0.100
 [dts @ 0xe2d380] max_analyze_duration 5000000 reached at 5002667
 [dts @ 0xe2d380] Estimating duration from bitrate, this may be inaccurate
 Input #0, dts, from 'lotr_5.1_768.dts':
   Duration: 00:02:05.18, start: 0.000000, bitrate: 768 kb/s
     Stream #0:0: Audio: dts (DTS-ES), 48000 Hz, 7 channels
 (FL+FR+FC+LFE+BC+SL+SR), s16, 768 kb/s
 Output #0, wav, to 'out.wav':
   Metadata:
     encoder         : Lavf53.32.100
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 7
 channels (FL+FR+FC+LFE+BC+SL+SR), s16, 5376 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (dca -> pcm_s16le)
 Press [q] to stop, [?] for help
 size=   83622kB time=00:02:07.42 bitrate=5376.0kbits/s
 video:0kB audio:83622kB global headers:0kB muxing overhead 0.000079%
 }}}

 mplayer sounds good for lotr_5.1_768.dts
 ffplay sounds bad for lotr_5.1_768.dts and out.wav. (completely identical
 as far as I can tell)
 mplayer sounds bad for out.wav, but it's slightly different from ffplay.
 (I can tell the difference only when listening very closely)

 good = sound seems to be centered / balanced, bad = sounds seems to be
 left-sided / backgrounded.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1149#comment:2>
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