[FFmpeg-trac] #1603(undetermined:new): fix remuxing of ima_adpcm_qt in mov

FFmpeg trac at avcodec.org
Sat Aug 4 14:12:35 CEST 2012


#1603: fix remuxing of ima_adpcm_qt in mov
-------------------------------------+-------------------------------------
               Reporter:  ami_stuff  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 it looks like ffmpeg does not set correctly compression ID and
 stts_entries[i].duration
 while remuxing ima_adpcm_qt in mov, so the output file is unplayable by qt
 (and ffmpeg)

 attached hack fixes for me remuxing of ima_ffmpeg.mov

 {{{
 C:\>ffmpeg -i ima_ffmpeg.mov -acodec copy out.mov
 ffmpeg version N-43160-g752344d Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Aug  3 2012 02:38:06 with gcc 4.5.0 (GCC) 20100414 (Fedora
 MinGW 4.5.
 0-1.fc14)
   configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build
 --arch=
 x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686
 -pc-min
 gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-
 cpudetect
 --enable-cross-compile --enable-static --disable-shared --extra-
 libs='-lws2_32 -
 lwinmm -lpthread' --extra-cflags='--static
 -I/var/www/users/research/ffmpeg/snap
 shots/build/include' --extra-ldflags='-static
 -L/var/www/users/research/ffmpeg/s
 napshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-
 version3
 --enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora
 --enable-
 libvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb
 --enable-
 libopencore-amrwb --enable-libmp3lame --enable-libvpx --disable-
 decoder=libvpx
   libavutil      51. 66.100 / 51. 66.100
   libavcodec     54. 48.100 / 54. 48.100
   libavformat    54. 22.100 / 54. 22.100
   libavdevice    54.  2.100 / 54.  2.100
   libavfilter     3.  5.101 /  3.  5.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 15.100 /  0. 15.100
   libpostproc    52.  0.100 / 52.  0.100
 Guessed Channel Layout for  Input Stream #0.0 : mono
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'ima_ffmpeg.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     encoder         : Lavf54.22.100
   Duration: 00:00:12.62, start: 0.000000, bitrate: 34 kb/s
     Stream #0:0(eng): Audio: adpcm_ima_qt (ima4 / 0x34616D69), 8000 Hz,
 mono, s1
 6, 32 kb/s
     Metadata:
       handler_name    : DataHandler
 Output #0, mov, to 'out.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     encoder         : Lavf54.22.100
     Stream #0:0(eng): Audio: adpcm_ima_qt (ima4 / 0x34616D69), 8000 Hz,
 mono, 32
  kb/s
     Metadata:
       handler_name    : DataHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 size=      53kB time=00:00:12.62 bitrate=  34.4kbits/s
 video:0kB audio:52kB subtitle:0 global headers:0kB muxing overhead
 1.278610%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1603>
FFmpeg <http://ffmpeg.org>
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