[Live-devel] Can't detect resolution of video recorderd with openRTSP

[Manuel]

Hi, I'm recording videos of an Axis M 1031 camera with openRTSP, saving the
output to a mov file, in some cases I can't play the video with mplayer or
VLC, or convert it with ffmpeg, because none of them can get the resolution
of the mov file.

openRTSP syntax used is
./openRTSP -q -w 320 -h 240 -f 10 -d N -u UUUU PPPP
rtsp://<hostname>/mpeg4/media.amp?videocodec=h264

Checked video information with mplayer
$ mplayer -identify video.mov -ao null -vo null -frames 0 2>&1 | grep ^ID_
ID_AUDIO_ID=0
ID_AID_0_LANG=eng
ID_VIDEO_ID=0
ID_FILENAME=video.mov
ID_DEMUXER=lavfpref
ID_VIDEO_FORMAT=MP4V
ID_VIDEO_BITRATE=0
*ID_VIDEO_WIDTH=0
ID_VIDEO_HEIGHT=0*
ID_VIDEO_FPS=600.000
ID_VIDEO_ASPECT=-nan
ID_AUDIO_FORMAT=MP4A
ID_AUDIO_BITRATE=15560
ID_AUDIO_RATE=8000
ID_AUDIO_NCH=1
ID_START_TIME=0.00
ID_LENGTH=12.16
ID_SEEKABLE=1
ID_CHAPTERS=0
ID_VIDEO_CODEC=ffodivx
ID_AUDIO_BITRATE=15560
ID_AUDIO_RATE=16000
ID_AUDIO_NCH=2
ID_AUDIO_CODEC=faad
ID_EXIT=EOF

I check the code of QuickTimeFileSink.cpp, and compared what addAtom(mp4v)
should write with the file in an hex editor, and found that 0x 01 40 00 F0
was before 0x 00 48 00 00 00 48 00 00, just as expected:

QuickTimeFileSink.cpp line 1915
  unsigned const widthAndHeight = (fMovieWidth<<16)|fMovieHeight;
  size += addWord(widthAndHeight); // Width+height
  size += addWord(0x00480000); // Horizontal resolution
  size += addWord(0x00480000); // Vertical resolution

The same for the code generated by addAtom(tkhd)

The video in question can be found in

http://dl.dropbox.com/u/23705394/video.mov

Thanks in advance.

Regards,

Manuel
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