[FFmpeg-trac] #1149(undetermined:new): wrong channels / poor playback for 7 channel dts
FFmpeg
trac at avcodec.org
Thu Mar 29 18:09:25 CEST 2012
#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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