Any video editing tool that can speed up the audio track?

[awdrifter]

I have a mp4 file that the video and audio is out of sync by about 20%. I can't find any tool that can allow me to edit the audio stream separately (I tried Sony Vegas, TMPGEnc). I need to be able to speed up the audio then re-encode that finished product as mp4 again. If anyone know of any program that can do this please help. Thanks.

 

[MadCow809]

Split the audio file from the actual mp4 video. Speed up the audio to the speed you want, and then re-encode with the new audio.

You don't need to install other programmes.

 

[93Flareside]

^
All of this can be done with Quicktime Pro(I'll let you 'acquire' it)... Well the split the track and then re-encode part. Not the speedy uppy part.

 

[Luca]

I tried Sony Vegas

In Vegas Pro 12:

Open File, match project video settings to media settings? YES.

Options > Ignore Event Grouping.

Move sliders separately to sync. (Use scrollwheel for sub-second accuracy)

File > Render As > Output: Match project settings.