-vtag won't force a fourcc of 'mpeg' for an mpeg2video codec

[dave rice]

I need to use 'mpeg' as a fourcc with mpeg2video codec. I know this is wrong, but seems to be necessary to get the file to with an Omneon product I'm using. When I try to use -tag:v? mpeg to force the codec, ffmpeg doesn't allow me to 'force'.

ffmpeg -y -i example.mov -tag:v mpeg -vcodec mpeg2video examplempeg.mov
ffmpeg version N-30853-gf955fdc, Copyright (c) 2000-2011 the FFmpeg developers
  built on Nov  1 2011 00:17:17 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-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. 22. 0 / 51. 22. 0
  libavcodec   53. 26. 0 / 53. 26. 0
  libavformat  53. 18. 0 / 53. 18. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 45. 3 /  2. 45. 3
  libswscale    2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0

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 'example.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 537199360
    compatible_brands: qt  
    creation_time   : 2011-11-18 00:59:10
  Duration: 00:00:05.93, start: 0.000033, bitrate: 223728 kb/s
    Stream #0:0(eng): Video: v210 (v210 / 0x30313276), yuv422p10le, 720x486, 223725 kb/s, SAR 9:10 DAR 4:3, 29.97 fps, 29.97 tbr, 30k tbn, 30k tbc
    Metadata:
      creation_time   : 2011-11-18 00:59:10
      handler_name    : ?Apple Alias Data Handler
Incompatible pixel format 'yuv422p10le' for codec 'mpeg2video', auto-selecting format 'yuv420p'
[buffer @ 0x7fe6d1419580] w:720 h:486 pixfmt:yuv422p10le tb:1/1000000 sar:9/10 sws_param:
[buffersink @ 0x7fe6d14197e0] auto-inserting filter 'auto-inserted scale 0' between the filter 'src' and the filter 'out'
[scale @ 0x7fe6d1419bc0] w:720 h:486 fmt:yuv422p10le -> w:720 h:486 fmt:yuv420p flags:0x4
[mov @ 0x7fe6d1862800] Tag mpeg/0x6765706d incompatible with output codec id '2'
Output #0, mov, to 'examplempeg.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 537199360
    compatible_brands: qt  
    creation_time   : 2011-11-18 00:59:10
    Stream #0:0(eng): Video: mpeg2video (mpeg / 0x6765706D), yuv420p, 720x486 [SAR 9:10 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    Metadata:
      creation_time   : 2011-11-18 00:59:10
      handler_name    : ?Apple Alias Data Handler
Stream mapping:
  Stream #0.0 -> #0.0 (v210 -> mpeg2video)
Could not write header for output file #0 (incorrect codec parameters ?)

[Carl Eugen Hoyos]

The following is supposed to work:

ffmpeg -y -i example.mov -tag:v mpeg -vcodec mpeg1video examplempeg.mov