[Libav-user] How to calculate pts/dts ???

[wolverin]

>Did I understand you correctly that I need to multiply time_base and system time between adjacent frames and add the resulting time to the previous PTS?
> 
>Nope.
>PTS is just timebase * seconds represented as int64 number
> 
>There are no additions with next/prev pts values.
> 
 
Then pts is the time of one frame?
 
>> 
>>I used av_rescale_q to scale time_base from an incoming MJPEG stream to an outgoing H264 one, but for some reason timestamps pts/dts are meaningless in this case.
> 
>Show your code.
 
I have greatly simplified it to understand how I am trying to use avscale, as it is done in different threads using buffers to use other ARM cores.
 
avcodec_send_packet(pCdcCtxInp, pPktInp);
avcodec_receive_frame(pCdcCtxInp, pFrm);
pFrm->pts = av_rescale_q(pPktInp->pts, pFmtCtxInp->streams[0]->time_base, pCdcCtxInp->time_base);
 
avcodec_send_frame(pCdcCtxOut, pFrm);
avcodec_receive_packet(pCdcCtxOut, pPktOut);
pPktOut->pts = av_rescale_q(pFrm->pts, pCdcCtxInp->time_base, pCdcCtxOut->time_base);
pPktOut->dts = pPktOut->pts;
 
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