I have an audio file that I successfully clipped down to 10 seconds using the ffmpeg library. I've tried applying a fade in and a fade out using the following:
ffmpeg -i casio-intro.mp3 -af 'afade=in:st=0:d=2,afade=out:st=8:d=2' casio-fade-intro.mp3
I also tried:
ffmpeg -i casio-intro.mp3 -af 'afade=t=in:ss=0:d=3,afade=t=out:st=8:d=2' casio-fade-intro.mp3
but neither of these produces an output file with fade in and fade out effects. Am I doing something wrong?