[FFmpeg-trac] #3023(undetermined:new): Information lost when remuxing DTS from MKV to MP4

[FFmpeg]

#3023: Information lost when remuxing DTS from MKV to MP4
-------------------------------------+-------------------------------------
             Reporter:  Nemesis7     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  mov          |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by Nemesis7):

 The output of ffmpeg looks like this:

 {{{
 ffmpeg version N-56468-g3409163-tessus Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Sep 13 2013 13:39:57 with llvm-gcc 4.2.1 (LLVM build 2336.1.00)
   configuration: --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm
 --extra-version=tessus --disable-shared --enable-static --disable-ffplay
 --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame
 --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid
 --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb
 --enable-libopencore-amrwb --enable-libxavs --enable-version3 --enable-
 libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm
 --enable-libopus --enable-fontconfig --enable-libfreetype --enable-libass
 --enable-libbluray --enable-filters --enable-runtime-cpudetect
   libavutil      52. 43.100 / 52. 43.100
   libavcodec     55. 31.101 / 55. 31.101
   libavformat    55. 16.102 / 55. 16.102
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 84.100 /  3. 84.100
   libswscale      2.  5.100 /  2.  5.100
   libswresample   0. 17.103 /  0. 17.103
   libpostproc    52.  3.100 / 52.  3.100
 [dca @ 0x10202a600] Number of channels changed in DCA decoder (2 -> 6)
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/Nemesis7/Movies/The Croods
 2013 720p BluRay DTS x264-DON/sample.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     creation_time   : 2013-10-02 21:30:15
     encoder         : Lavf55.16.102
   Duration: 01:30:07.83, start: 0.015333, bitrate: 12 kb/s
     Chapter #0.0: start 0.000000, end 12.433000
     Metadata:
       title           : 00:00:00.000
     Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
 1280x544 [SAR 1:1 DAR 40:17], 3890 kb/s, 23.98 fps, 23.98 tbr, 16k tbn,
 47.95 tbc (default)
     Metadata:
       creation_time   : 2013-10-02 21:30:15
       handler_name    : VideoHandler
     Stream #0:1(eng): Audio: dts (DTS) (mp4a / 0x6134706D), 48000 Hz,
 5.1(side), fltp, 1536 kb/s (default)
     Metadata:
       creation_time   : 2013-10-02 21:30:15
       handler_name    : SoundHandler
     Stream #0:2(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
 fltp, 192 kb/s (default)
     Metadata:
       creation_time   : 2013-10-02 21:30:15
       handler_name    : SoundHandler
     Stream #0:3(eng): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s
 (default)
     Metadata:
       creation_time   : 2013-10-02 21:30:15
       handler_name    : SubtitleHandler
     Stream #0:4(spa): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s
     Metadata:
       creation_time   : 2013-10-02 21:30:15
       handler_name    : SubtitleHandler
     Stream #0:5(por): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s
     Metadata:
       creation_time   : 2013-10-02 21:30:15
       handler_name    : SubtitleHandler
     Stream #0:6(cze): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s
     Metadata:
       creation_time   : 2013-10-02 21:30:15
       handler_name    : SubtitleHandler
     Stream #0:7(nld): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s
     Metadata:
       creation_time   : 2013-10-02 21:30:15
       handler_name    : SubtitleHandler
     Stream #0:8(eng): Subtitle: mov_text (text / 0x74786574), 0 kb/s
     Metadata:
       creation_time   : 2013-10-02 21:30:15
       handler_name    : SubtitleHandler
 At least one output file must be specified
 }}}

 However some info is lost in the process even though the output might
 suggest everything is fine. I can provide an mp4 sample created by Subler.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3023#comment:2>
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