Created
February 12, 2018 11:25
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| ffmpeg -i $video1 -i $video2 -i $video3 -i $video4 -filter_complex "nullsrc=size=1920x1080 [base]; [0:v] setpts=PTS-STARTPTS, scale=960x540 [a0]; [1:v] setpts=PTS-STARTPTS, scale=960x540 [a1]; [2:v] setpts=PTS-STARTPTS, scale=960x540 [a2]; [3:v] setpts=PTS-STARTPTS, scale=960x540 [a3]; [base][a0] overlay=shortest=0 [tmp0]; [tmp0][a1] overlay=shortest=0:x=960:y=0 [tmp1]; [tmp1][a2] overlay=shortest=0:x=0:y=540 [tmp2]; [tmp2][a3] overlay=shortest=0:x=960:y=540" -f matroska pipe:1 | ffplay - |
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