On Mon, Feb 08, 2021 at 13:00:15 -0600, Gilles wrote: > In one command, I'd like to stack two videos, resize them to the same > width+height, and use audio from the first video.
Which of the below works for you? The first two, right? > #Stack > ffmpeg -i input0 -i input1 -filter_complex vstack=inputs=2 output > > #Using audio from one particular input. This example will use the audio from > input1: > ffmpeg -i input0 -i input1 -filter_complex "[0:v][1:v]vstack=inputs=2[v]" > -map "[v]" -map 1:a output > > #Resize/scale an input > ffmpeg -i input0 -i input2 -filter_complex > "[0:v]scale=640:-1[v0];[v0][1:v]vstack=inputs=2" output You could just merge your work from the second and the third example. Did you try this?: $ ffmpeg -i input0 -i input1 -filter_complex "[0:v]scale=640:-1[v0];[v0][1:v]vstack=inputs=2[v]" -map "[v]" -map 1:a output (Untested by myself.) There's also a very handy filter called "scale2ref". It will scale one input based on the other's size: https://ffmpeg.org/ffmpeg-filters.html#scale2ref Cheers, Moritz _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
