Hi, I'm trying to overlay a .mp4 on top of another .mp4 programmatically.
This is my filter description: "movie=myvid.mp4, setpts=PTS-STARTPTS [movie]; [in] setpts=PTS-STARTPTS, [movie] overlay=0:0 [out]" This results in only the first frame of myvid.mp4 being overlaid on my video. And the first frame persists for the length of the video, like it is a static image. My code is basically identical to that of filtering.c<http://ffmpeg.org/doxygen/trunk/filtering_8c-source.html> (the difference being that I output the result into a .mp4) What would cause the filter to only overlay the first frame? Cheers
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