[FFmpeg-trac] #867(undetermined:new): -tag:[v|a] doesn't force a fourcc

[FFmpeg]

#867: -tag:[v|a] doesn't force a fourcc
-------------------------------------+-------------------------------------
             Reporter:  dericed      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  atag         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 In order to maintain interoperability with a broadcast system I need to
 transcode audio to pcm_s24be with an 'in24' codecid. Using ffmpeg the
 codecid for '-acodec pcm_s24be' produces a codecid of 'lpcm' even if I
 specify '-atag in24'


 Here's my output using ffmpeg to try to output an 'in24' audio stream in
 Quicktime:

 {{{
 ffmpeg -i MI-351_8b.mov -vn -acodec pcm_s24be -atag in24 in24.mov
 ffmpeg version N-32741-g440e984, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Dec 27 2011 09:48:51 with gcc 4.2.1 (Apple Inc. build 5666)
 (dot 3)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared
 --enable-gpl --enable-version3 --enable-libfreetype --enable-nonfree
 --enable-hardcoded-tables --cc=/usr/bin/gcc-4.2 --enable-libx264 --enable-
 libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis
 --enable-libvpx --enable-libxvid
   libavutil      51. 33.100 / 51. 33.100
   libavcodec     53. 48.100 / 53. 48.100
   libavformat    53. 28.100 / 53. 28.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 55.100 /  2. 55.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  5.100 /  0.  5.100
   libpostproc    51.  2.100 / 51.  2.100

 Seems stream 0 codec frame rate differs from container frame rate:
 30000.00 (30000/1) -> 29.97 (30000/1001)
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MI-351_8b.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     creation_time   : 1970-01-01 00:00:00
     encoder         : Lavf53.14.0
   Duration: 00:00:13.03, start: 0.000000, bitrate: 169865 kb/s
     Stream #0:0(eng): Video: rawvideo (2vuy / 0x79757632), uyvy422,
 720x486, 167793 kb/s, SAR 9:10 DAR 4:3, 29.97 fps, 29.97 tbr, 30k tbn, 30k
 tbc
     Metadata:
       creation_time   : 1970-01-01 00:00:00
       handler_name    :
                         DataHandler
     Stream #0:1(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 2
 channels, s32, 2304 kb/s
     Metadata:
       creation_time   : 1970-01-01 00:00:00
       handler_name    :
                         DataHandler
 Output #0, mov, to 'in24.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     creation_time   : 1970-01-01 00:00:00
     encoder         : Lavf53.28.100
     Stream #0:0(eng): Audio: pcm_s24be (in24 / 0x34326E69), 48000 Hz, 2
 channels, s32, 2304 kb/s
     Metadata:
       creation_time   : 1970-01-01 00:00:00
       handler_name    :
                         DataHandler
 Stream mapping:
   Stream #0:1 -> #0:0 (pcm_s24le -> pcm_s24be)
 Press [q] to stop, [?] for help
 size=    3666kB time=00:00:13.03 bitrate=2304.4kbits/s
 video:0kB audio:3665kB global headers:0kB muxing overhead 0.018598%
 }}}

 Checking the file shows the fourcc is 'lpcm':

 {{{
 ffmpeg -i in24.mov
 ffmpeg version N-32741-g440e984, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Dec 27 2011 09:48:51 with gcc 4.2.1 (Apple Inc. build 5666)
 (dot 3)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared
 --enable-gpl --enable-version3 --enable-libfreetype --enable-nonfree
 --enable-hardcoded-tables --cc=/usr/bin/gcc-4.2 --enable-libx264 --enable-
 libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis
 --enable-libvpx --enable-libxvid
   libavutil      51. 33.100 / 51. 33.100
   libavcodec     53. 48.100 / 53. 48.100
   libavformat    53. 28.100 / 53. 28.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 55.100 /  2. 55.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  5.100 /  0.  5.100
   libpostproc    51.  2.100 / 51.  2.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in24.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     creation_time   : 1970-01-01 00:00:00
     encoder         : Lavf53.28.100
   Duration: 00:00:13.03, start: 0.000000, bitrate: 2304 kb/s
     Stream #0:0(eng): Audio: pcm_s24be (lpcm / 0x6D63706C), 48000 Hz, 2
 channels, s32, 2304 kb/s
     Metadata:
       creation_time   : 1970-01-01 00:00:00
       handler_name    :
                         DataHandler
 At least one output file must be specified
 }}}

 The same command through ffmbc works and produces an output with 'in24'
 codec id.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/867>
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