Gyan
2020-12-03 20:37:42
You can do it one of two ways. 1) declare simple filtergraph for each output, or 2) do all filtering inside a complex filtergraph.
#1 Per-output simple filtergraph.
ffmpeg -y -progress /dev/stdout -i media.mp4
-vf "select='between(t,0,25)',setpts=N/FRAME_RATE/TB"
-af "aselect='between(t,0,25)’,asetpts=N/SR/TB"
media_cut.mp4
-vf "select='between(t,0,25)',setpts=N/FRAME_RATE/TB,scale=-2:360"
-af "aselect='between(t,0,25)’,asetpts=N/SR/TB"
media_preview.mp4
#2 A complex filtergraph.
ffmpeg -y -progress /dev/stdout -i media.mp4
-filter_complex
"[0:v]select='between(t,0,25)',setpts=N/FRAME_RATE/TB,split=2[mvideo][pvideo];
[pvideo]scale=-2:360[pvideo];
[0:a]aselect='between(t,0,25)’,asetpts=N/SR/TB,asplit=2[maudio][paudio]"
-map [mvideo] -map [maudio]
media_cut.mp4
-map [pvideo] -map [paudio]
media_preview.mp4
thanks a lot, i think the complex filter graph is perfect for me. i'll check on the official documentation related to your answer to understand and being able to reproduce this kind of command.