ffmpeg -i [input] -r 24 -filter:v "setpts=2.5*PTS" -y [output]
sox [input] [output] tempo 0.4ffmpeg -i [input] -filter:a "atempo=0.4" -vn [output]
ffmpeg -i [input] -r 24 -y [output]
93 sec @ 24fps = 2232 frames
sox
ffmpeg