Can audio for 29 frame footage synch to 25 frame?

Punkavious

Punkavious

Member
...without negatively affecting the speed? To retain normal pitch?

This does indeed sound quite ridiculous, but I'm having to convert 29 frame footage into a PAL friendly format of 25 frames to be edited and while I have no problem with the video - the audio is quite the bug I cannot fix. Is there a solution?
 
Audio is audio. It doesn't have a "frame rate". All modern DV audio is 48khz 16-bit, regardless of whether you shot on PAL or NTSC, so you should be able to freely intermix audio files from one format to the other.
 
But see, since audio has no definable frame rate, that's where the problem lies. When the video converts from 29 to 25, it loses frames so the audio gradually loses synch more and more each second.
 
it shouldn't.... the 29 frames and 25 take the same amount of time (both are spread over one second), so one second of audio from the original should sync perfectly with one second of the new video.
 
Then maybe it's the video? But as far as I can understand, when I've placed the audio down in either FCP or Quicktime Pro on video which is up to speed with the original (only now 25 frames), the synch is... just not there. Bah. I will inspect the video settings and perhaps cry some more over the tragedy of it all. Apologies for wasting so much time :(
 
Import the PAL footage into a normal PAL timeline, and export the audio as discrete audio files, like .wav files.

Then go into an NTSC timeline and import those .wav files, and they should play perfectly.
 
You must log in or register to reply here.
Back
Top