"creation_time" metadata incorrect in mov files

[nichot20]

Summary of the bug:
When creating a mov from a mov ffmpeg carries forward the "creation_time" metadata from the original file (if it exists) such that the reported metadata (fprobe) is incorrect for the file that it has just created.

How to reproduce:

% ffmpeg -i in.mov -timecode 09:59:30:06 -an -c:v dvvideo -pix_fmt yuv420p -an -y out.mov
ffmpeg version N-41512-g66531c7-by_Tim Copyright (c) 2000-2012 the FFmpeg developers
  built on Jun 11 2012 12:26:34 with gcc 4.6.2
  configuration: --extra-version=by_Tim --enable-static --disable-shared --enable-gpl --enable-nonfree --enable-version3 --prefix=/mnt/msds-store-0/tim/ffmpeg-tux/usr/local --libdir=/mnt/msds-store-0/tim/ffmpeg-tux/usr/local/lib64 --samples=../fate-suite/ --enable-runtime-cpudetect --extra-cflags='-static -I/mnt/msds-store-0/tim/ffmpeg-tux/usr/local/include' --extra-ldflags='-static -L/mnt/msds-store-0/tim/ffmpeg-tux/usr/local/lib64' --progs-suffix=_Jun-11 --enable-libfaac --enable-libx264 --enable-libfree  libavutil      51. 57.100 / 51. 57.100
  libavcodec     54. 25.100 / 54. 25.100
  libavformat    54.  6.101 / 54.  6.101
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 78.101 /  2. 78.101
  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 #0.1 : mono
Guessed Channel Layout for  Input Stream #0.2 : mono                                                                                                                                                                                                                            
Guessed Channel Layout for  Input Stream #0.3 : mono                                                                                                                                                                                                                            
Guessed Channel Layout for  Input Stream #0.4 : mono                                                                                                                                                                                                                            
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/mnt/msds-store-0/Media_hub/bisect/in.mov':                                                                                                                                                                                            
  Metadata:
    major_brand     : qt  
    minor_version   : 537199360
    compatible_brands: qt  
    creation_time   : 2012-06-08 06:31:48
  Duration: 00:00:00.40, start: 0.000000, bitrate: 33658 kb/s
    Stream #0:0(eng): Video: dvvideo (dvcp / 0x70637664), yuv420p, 720x576 [SAR 64:45 DAR 16:9], 28800 kb/s, SAR 118:81 DAR 295:162, 25 fps, 25 tbr, 25 tbn, 25 tbc
    Metadata:
      creation_time   : 2012-06-08 06:31:48
      handler_name    : Apple Alias Data Handler
      timecode        : 01:00:00:00
    Stream #0:1(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
    Metadata:
      creation_time   : 2012-06-08 06:31:48
      handler_name    : Apple Alias Data Handler
    Stream #0:2(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
    Metadata:
      creation_time   : 2012-06-08 06:31:48
      handler_name    : Apple Alias Data Handler
    Stream #0:3(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
    Metadata:
      creation_time   : 2012-06-08 06:31:48
      handler_name    : Apple Alias Data Handler
    Stream #0:4(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
    Metadata:
      creation_time   : 2012-06-08 06:31:48
      handler_name    : Apple Alias Data Handler
    Stream #0:5(eng): Data: none (tmcd / 0x64636D74)
    Metadata:
      creation_time   : 2012-06-08 06:31:48
      handler_name    : Apple Alias Data Handler
      timecode        : 01:00:00:00
[buffer @ 0x17f07c0] w:720 h:576 pixfmt:yuv420p tb:1/25 fr:25/1 sar:118/81 sws_param:flags=2
[ffmpeg_buffersink @ 0x17f0aa0] No opaque field provided
Output #0, mov, to 'out.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 537199360
    compatible_brands: qt  
    creation_time   : 2012-06-08 06:31:48
    timecode        : 09:59:30:06
    encoder         : Lavf54.6.101
    Stream #0:0(eng): Video: dvvideo (dvcp / 0x70637664), yuv420p, 720x576 [SAR 118:81 DAR 295:162], q=2-31, 200 kb/s, 25 tbn, 25 tbc
    Metadata:
      creation_time   : 2012-06-08 06:31:48
      handler_name    : Apple Alias Data Handler
      timecode        : 01:00:00:00
Stream mapping:
  Stream #0:0 -> #0:0 (dvvideo -> dvvideo)
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Notice from the above how the output creation_time is the same as the input times.. "creation_time : 2012-06-08 06:31:48"

[nichot20]

sample QT file made by FCP