[FFmpeg-user] How to convert a set of pgm files to an rtsp streamable mp4 file

Mike Scheutzow mike.scheutzow at alcatel-lucent.com
Tue May 3 20:59:49 CEST 2011

Arnie Bearak wrote:
> I am hoping someone can help me with this issue as I have not been able to 
> create an rtsp streamable mp4 file (streaming from darwin server on my linux box 
> to quicktime  or vlc on my windows box).
> I run the ffmpeg command  
> ffmpeg -r 1 -i frame_%05d.pgm -b 18000 -vcodec libx264 -y  -threads 0 -vpre slow 
> Arn.mp4
> and I can create an mp4 file that when copied to the my windows box can be 
> played with VLC or quicktime.
> However,  if I try to stream the file,  I get an indication of unsupported media 
> type.
> Can anyone tell me the appropriate parameter to add to my command line to get 
> the valid tags inserted into the file so that it can be rtsp streamed?

Darwin requires that additional metadata tracks be present in the .mp4 
file; they call this procedure "hinting". You can not do this with 
ffmpeg, you have to obtain a separate utility.

I use mp4box to add hints for Darwin.


$ mp4box -hint Arn.mp4

Mike Scheutzow

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