Paul B Mahol wrote > Interleave filter use frame pts/timestamps for picking frames.
I think Paul is correct. @Mark - Everything in filter chain works as expected, except interleave in this case You can test and verify the output of each node in a filter graph, individually, by splitting and using -map. D2 below demonstrates that the output of blend is working properly , and this also implies that G,H were correct, but you could split and -map them too to double check ffmpeg -i 23.976p_framenumber.mp4 -filter_complex "telecine=pattern=46,split[A][B],[A]select='not(eq(mod(n+1\,5)\,3))'[C],[B]split[E][F],[E]select='eq(mod(n+1\,5)\,2)',datascope=size=1920x1080:x=45:y=340:mode=color2[G],[F]select='eq(mod(n+1\,5)\,3)'[H],[G][H]blend=all_mode=average,split[D][D2],[C][D]interleave[out]" -map [out] -c:v libx264 -crf 20 testout.mkv -map [D2] -c:v libx264 -crf 20 testD2.mkv -y As Paul pointed out, interleave works using timestamps , not "frames". If you took 2 separate video files, with the same fps, same timestamps, they won't interleave correctly in ffmpeg. The example in the documentation actually does not work if they had the same timestamps. You would have to offset the PTS of one relative to the other for interleave to work correctly. If you check the timestamps of each output node, you will see why it's not working here, and why it works properly in some other cases . To get it working in this example, you would need [D] to assume [H]'s timestamps, because those are where the "gaps" or "holes" are in [C] . It might be possible using an expression using setpts -- Sent from: http://www.ffmpeg-archive.org/ _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".