Nicolas George <geo...@nsup.org> writes: > At both steps, you are transcoding. That means you > are paying the MP3 toll twice, including CPU time > and quality loss. > > I do not know how normalize-audio operates. It is > theoretically possible to adjust the volume without > transcoding, but I suppose this is tricky, and I do > not know if normalize-audio implements it. > > If normalize-audio can do it, then using "-c copy" > to avoid transcoding is the correct solution. If it > can not, then use a raw PCM format as intermediate > format; the obvious choice is WAVE. > > Also, you say that normalize-audio is lightning > fast, this is bad sign, because computing the volume > of a clip accurately is expensive.
normalize-audio is fast with audio files - it doesn't work *at all* with movies. If normalized-audio worked with mp4 movies, I would already have my tool. You mean, I should use `-c copy' for both ffmpeg calls? -- underground experts united http://user.it.uu.se/~embe8573 -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/87si8niqsz....@nl106-137-147.student.uu.se
