Hello, If 2 videos do have the same width and height, one can view them side by side with
ffplay -f lavfi "movie='LEFT.mp4',scale=iw/2:ih[v0];movie='RIGHT.mp4',scale=iw/2:ih[v1];[v0][v1]hstack" What now if the 2 videos are of different size??? I wish that my monitor is divided into 2 panes, left video being smaller that right one, if need be the smaller video will be black padded. Actually, I want to compare the output on the LEFT with a video with a low CRF and on the RIGHT with a video with a higher CRF but with upsaling. Videos to be compared ffmpeg -y -i "M4H03893.mp4" -vf "crop=in_w-36*20:in_h-10*20:18*20:3*20,hqdn3d" -c:a copy -c:v libx264 -crf 12 -preset:v slow -async 1 -t 153 "LEFT.mkv" ffmpeg -y -i "M4H03893.mp4" -vf "crop=in_w-36*20:in_h-10*20:18*20:3*20,hqdn3d,scale=-2:720" -c:a copy -c:v libx264 -crf 25 -preset:v slow -async 1 -t 153 "RIGHT.mkv" Thanks _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".