sön 2018-02-11 klockan 17:44 -0500 skrev Tony Di Croce: > I have video frames in a buffer in memory... and I know their frame > rate > (and other information like resolution, etc)... I am attempting to > mux this > video into an mp4... But I don't know how to set PTS/DTS > appropriately. I > have two questions: > > 1) What should I set AVStream->time_base to? > 2) How do I compute PTS/DTS per frame (given only a framerate)? > > Thanks in advance!
I don't think MP4 allows raw video. You probably mean MOV. If your framerate is constant then I believe setting time_base to it and just having PTS increase monotonically from zero is enough (ptr = 0, pts = 1, pts = 2 ...). There may also be some API for this, or lavf may come up with some PTSes for you if you say AV_NOPTS_VALUE /Tomas
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