[RESOLVED] I'm an idiot. It's to do with the filters I have on the audio. I'm using a very very slight Pitch Shift, but had not checked "Preserve Duration", meaning the audio was getting further and further behind as it went. Thank you to everyone for your help.
This is one of those problems that I can't seem to find anyone else having. I'm probably just searching for the wrong thing though.
The problem is that the playback becomes more and more desynchronised with the actual waveform. The playback "needle" will be over a section of dead air but will still be playing audio from the last section where there was noise. I know this doesn't make sense, but there's a video of the problem happening below. Listen for the difference between when a large section is played before a split versus when a short section is played before a split.
Again, I want to emphasise from the title, I can live with this happening during playback in Vegas, but the problem exists in the rendered product, making it unlistenable.
I've not sure what the origin of this problem could be. As you see in the video there's no video at all that Vegas can take project settings from: it's just audio.
If there's any details you need me to provide then let me know. Some basic info is below.
- Version: Vegas 14.0
- OS: Windows 10
- Project Properties: (See Below)
- Originally Audio Bit Rate: 140kbps