[FFmpeg-trac] #55(undetermined:new): 5.1 AAC Output Incorrectly Mapped

[FFmpeg]

#55: 5.1 AAC Output Incorrectly Mapped
---------------------------+---------------------
 Reporter:  AlanJames1987  |        Type:  defect
   Status:  new            |    Priority:  normal
Component:  undetermined   |     Version:  git
 Keywords:                 |  Blocked By:
 Blocking:                 |  Reproduced:  0
 Analyzed:  0              |
---------------------------+---------------------
 I am trying to transcode an H.264 video with 5.1 DTS sound to an X264
 video with 5.1 AAC sound. The output file's channels were not mapped
 correctly and the sound that should have been coming from the center
 speaker was coming out the right front speak. Both libfaac and the built
 in aac codec have given me the same problem.

 I'm on Ubuntu 10.04 using the latest Git version of FFMPEG. Below is the
 bash script I used and FFPROBE output or the input file.


 {{{
 #!/bin/bash

 ffmpeg -i 11.mov \
   -vcodec libx264 -b 1920k \
   -acodec aac -strict experimental -ab 192k \
   -vpre slow -threads 0 -map_metadata -1 -y 11_output.mp4
 qt-faststart 11_output.mp4 11.mp4
 rm 11_output.mp4
 }}}

 {{{
 FFprobe version git-N-29011-g5381823, Copyright (c) 2007-2011 the FFmpeg
 developers
   built on Apr 10 2011 21:10:33 with gcc 4.4.3
   configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-
 postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb
 --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-
 libvpx --enable-libx264 --enable-libxvid --enable-x11grab
   libavutil    50. 40. 1 / 50. 40. 1
   libavcodec   52.117. 0 / 52.117. 0
   libavformat  52.106. 0 / 52.106. 0
   libavdevice  52.  4. 0 / 52.  4. 0
   libavfilter   1. 78. 0 /  1. 78. 0
   libswscale    0. 13. 0 /  0. 13. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 [matroska,webm @ 0x32cd050] Estimating duration from bitrate, this may be
 inaccurate
 Input #0, matroska,webm, from '11.mkv':
   Duration: 00:01:04.39, start: 0.000000, bitrate: 1536 kb/s
     Stream #0.0(eng): Video: h264 (High), yuv420p, 1920x816 [PAR 1:1 DAR
 40:17], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc
     Metadata:
       title           : Tron.Legacy.2010.BluRay.1080p.x264.DTS-MySiLU
     Stream #0.1(eng): Audio: dca (DTS), 48000 Hz, 5.1, s16, 1536 kb/s
 (default)
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/55>
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