Increase volume with ffmpeg I have the code below I want it to automatically increment up like this:
(t, 30,33) and (t, 60,63), (t, 90,93) and so on it adds 30 units.

     ffmpeg -i in.mov -vcodec copy -af "volume=enable='between(t,30,33)':volume=0"out2.mov
Use

-af "volume=enable='gte(t,30)*lt(mod(t,30),3)':volume=0"