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April 8, 2019 18:51
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Compose two videos into a single – top/bottom – video with a oneliner ffmpeg command
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| ffmpeg -i 1.mp4 -i 2.mp4 -filter_complex "nullsrc=size=720x1280 [base]; [0:v] setpts=PTS-STARTPTS, scale=720x640 [top]; [1:v] setpts=PTS-STARTPTS, scale=720x640 [bottom]; [base][top] overlay=shortest=1 [tmp]; [tmp][bottom] overlay=shortest=1:y=640" -c:v libx264 output.mkv |
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