Unable to decode MPEG-1 video in mov

[llogan]

Quicktime 7.7 in Windows 7 is able to decode the video and claims it is "MPEG1 Video, 720x480, 29.97".

Samples:  http://pubs.usgs.gov/ds/521/ds521_movies/

$ ffmpeg -loglevel 99 -i cam02_2.mov -y out.mpg
ffmpeg version N-33885-gdb1347f, Copyright (c) 2000-2011 the FFmpeg developers
  built on Oct 21 2011 12:08:42 with gcc 4.6.1 20110819 (prerelease)
  configuration: --prefix=/usr --enable-gpl
  libavutil    51. 22. 0 / 51. 22. 0
  libavcodec   53. 23. 0 / 53. 23. 0
  libavformat  53. 17. 0 / 53. 17. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 44. 1 /  2. 44. 1
  libswscale    2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x17da780] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x17da780] ISO: File Type Major Brand: qt  
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x17da780] All info found
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cam02_2.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 537199360
    compatible_brands: qt  
    creation_time   : 2010-12-14 22:10:52
  Duration: 00:00:13.01, bitrate: 9323 kb/s
    Stream #0:0(eng), 0, 1/90000: Data: none (m1v  / 0x2076316D)
    Metadata:
      creation_time   : 2010-12-14 22:10:52
Output #0, mpeg, to 'out.mpg':
  Metadata:
    major_brand     : qt  
    minor_version   : 537199360
    compatible_brands: qt  
    creation_time   : 2010-12-14 22:10:52
Output file #0 does not contain any stream

Brought to attention by truk77 in #ffmpeg-user.

[cehoyos]

Fixed in git head, needs -r 30 with ffmpeg.