[Live-devel] openRTSP producing bad video files

Ross Finlayson finlayson at live555.com
Thu Aug 28 18:57:28 PDT 2008


>On Thu, Aug 28, 2008 at 03:51:29PM -0700, Ross Finlayson wrote:
>>>  I am having a problem with openRTSP recording video from a few Axis
>>>  video cameras.  I'm basically running openRTSP like this:
>>>
>>>    openRTSP -q -b 80000 -w 704 -h 480 -f 30 rtsp://url > foo.mov
>>>
>>>  When I play foo.mov in mplayer, it's jerky and plays too fast, where 10
>>>  seconds of wall time will go by in 4 to 6 seconds.
>>
>>  It sounds like your "-f" (frame rate) parameter is wrong.  Perhaps it 
>>  should be 15, or 12 frames-per-second?  You need to get that correct.
>
>I did try 15 with similar results.  I can try other values tomorrow I
>suppose.  Is it possible that the mpeg4 stream actually has a variable
>framerate?

I don't think so.

You can find the actual frame rate quite easily: Just play the stream 
using QuickTime Player, and look at the 'stream information' (there's 
a menu item for this).
-- 

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/


More information about the live-devel mailing list