[Libav-user] Video Playback fast

Talgorn Fran├žois-Xavier fxtalgorn at yahoo.fr
Thu Jul 2 21:34:36 CEST 2015


Good news you made it work.
As mentioned in the Doxygen, it might be possible that your framerate is not fixed, hence FFMPEG doesn't use you num and den values as a constant framerate.



Le 2 juil. 2015 à 18:40, Kevin J. Brooks <kbrooks at r2c-ss.com> a écrit :

> I changed the den value on the time_base to 15 and that fixed the problem.  Can some explain why?  To me would seem that I needed to go from 25 to 50, not 25 to 15.
> 
> Sincerely,
> Kevin J. Brooks
> Senior Software Engineer
> R2C Support Services
> 200 West Side Square Suite 604
> Huntsville, AL 35801
> Office: 256-684-8383 ext. 104 
> 
> <sdvosb.png>
> On 7/2/2015 9:59 AM, Talgorn François-Xavier wrote:
>> Hi,
>> 
>> Frames/second shouldn't be an issue in itself. It might be because of time_base parameter.
>> To help you better, could you provide the code used ?
>> 
>> Le 2 juil. 2015 à 16:41, Kevin J. Brooks <kbrooks at r2c-ss.com> a écrit :
>> 
>>> Hi all,
>>> 
>>> I am successfully saving video in a wmv format, capturing from a video capture card.  However, the play back in windows media is just a bit fast.  I am attempting to save at 25 frames per second, but the properties on the wmv file states it is 30 fps.  What should I be looking at to get this set up right?
>>> 
>>> Thanks,
>>> Kevin
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> 
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