All I want to do is. . .
. . .use ffmpeg.
Description: Useful ffmpeg commands like speeding up video or boosting audio.
Contributors:
anschwa
Updated: 10/10/15
Helpful ffmpeg commands.
Speeding Up
Speed video up 2x.
ffmpeg -i input.mkv -filter:v "setpts=0.5*PTS" output.mkv
Slowing Down
Slow video down 2x
ffmpeg -i input.mkv -filter:v "setpts=2.0*PTS" output.mkv
Add Audio track to Video
ffmpeg -i input.mkv -i input.mp3 -c copy -shortest -map 0:0 -map 1:0 output.mkv
Boost Audio
Boost audio by 150%
ffmpeg -g input.mp4 -af "volume=1.5" output.mp4