One issue is scene change is still active. When you crop to a region of interest, a small change is effectively a larger % change. eg. The delta between 1020 and 1021 is large when head is going up. If you disable scene change, you get set intervals, it's no longer adaptive by scene change.
-filter_complex "[0:0][1:0]decimate='ppsrc=1':scthresh=0" Drops become regular 1012,1017,1022,1027,1032 Other differences are preprocessed.mkv is a lossy version and encoded progressively instead of interlaced or mbaff. There are motion vectors that cross fields that shouldn't, so you get motion when you shouldn't when you examine individual fields. ie. Fields are "muddied" in preprocessed.mkv . Also the chroma encoding is different when you encode progressively. You can see the colored edges are different on some fields. You can set chroma=0 to disable, or use a proper prepreprocessed version (Lossless and encoded with mbaff) These latter two aren't the explanation in this specific case, but you should test with original source, or lossless versions -- 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".