[Libav-user] h263 frame rate

Carl Eugen Hoyos cehoyos at ag.or.at
Mon Aug 20 23:24:06 CEST 2012

David Longest <david.longest at ...> writes:

> I am demuxing an h263 RTP stream and providing the raw 
> h263 data to libav. The source of the stream is 
> transmitting at 15fps. It seems no matter what I do, 
> libavcodec and libavformat give me back a framerate and 
> time stamp that results in ~30fps. I have tried adding 
> the option “framerate”, “1:15” to the dictionary sent in
avformat_open_input(), but it does not change the result. 
> The incorrect framerate and AVStream time_base cause my 
> playback to stutter.

Does it work with ffmpeg / ffplay ?
(The applications?)

> What is the proper way to handle overriding the frame 
> rate reported by libav?

I don't think it is generally possible.

Carl Eugen

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