First sorry if this has been asked before, I can't seem to find a solution. I have an mp4 file that I am trying to correct the audio on. At 29:12 the audio goes out of whack. If I adjust to -1050 at that time in VLC it is corrected. My question is how do I edit the actual file so I can save it and play it on my samsung smart tv. I have been trying with QT Sync but all I have managed to do on that program is change the sync of the entire video. IE now the start of the video is out of sync and the end is fine.

Thanks for your time,
Dan