Problem: t_ext defaults to video_length if t>video_length (i.e. 5 seconds clip can only become 10 seconds long even if i try to hold any frame for 20 seconds)
[t],[t_ext]
Command I'm using:
ffmpeg -i 'video_path' -vf "setpts='PTS-STARTPTS + gte(T,t)*(t_ext/TB)'" -af "asetpts='PTS-STARTPTS + gte(T,t)*(t_ext/TB)', aresample=async=1: first_pts=0" -vsync cfr 'output.mp4'
ffmpeg version 4.1.3-0ubuntu1
Most appreciated.
