You'll want to do the audio in Ableton Live, then re-edit/re-sync the video with your new audio in video-editing software (Final Cut Pro, Adobe Premier or whatever).

What's the most efficient way to now sync the video to the audio before exporting to MP4?

I use FCPx to do edits eg replacing the audio track with better quality AIFF audio

8 out of 10 times, once I hit synchronise clips it works fine but some Videos audio track are at a different BPM to the Album version I'm trying to replace with.


Is there a way to adjust BPM of the video in the time line so that it can match the new audio.

My current work flow is to start placing markers on the video then stretching/squeezing the video. I don't touch the new audio file.

It's tricky, but I do the same thing. Stretch the video to match the audio vs the other way around. If you're lucky and the video uses an easy to find edit it's not a big deal, but if it's something else you're gonna have to chop things up.

Don't even get me going on older guitar based stuff that you only have live footage of like The Clase, Ramones, or Talking Heads (like "Psycho Killer") that is almost a lesson in torture.

Torture is an understatement.

I will pay good money for a plug in like that for FCP or any other video editing suite.

Guess I have to stick with the above method for now, yeah I don't touch the audio too.

just found this thread on Serato about it

serato.com