I'm trying to concat two videos, side by side, using ffmpeg. One of them is
1280x720, and the other
1920x1080. One will be left, one will be right side. The higher resolution will be resized to the lower resolution one.
What is the command to do that?
I tried this command (they used 4 videos, I tried to edit it for 2), but somewhere is wrong and it cuts the first video:
ffmpeg -i activity.mp4 -i mobile.mp4 -filter_complex " nullsrc=size=2560x720 [base];[0:v] setpts=PTS-STARTPTS, scale=1280x720 [upperleft]; [1:v] setpts=PTS-STARTPTS, scale=1280x720 [upperright]; [base][upperleft] overlay=shortest=1 [tmp1]; [tmp1][upperright] overlay=shortest=1:x=720" -c:v libx264 output.mp4