After rendering, some audio tracks are louder, others are quieter

MushoDen wrote on 6/26/2022, 3:02 AM

Hi
I'm a complete beginner at Vegas pro, so please consider this :)
I have vegas pro 19 build 636

My English is not very good, I use a translator, please take that into account :)

My project has 3 audio tracks
1 - background music
2 - audio from the game
3 - sound effects for text, transitions, etc.
While editing the video, I adjust the volume of each audio track so that together they sound harmonious. So that no one sound drowns out the other.
Then I start rendering.
After rendering, I open the file and hear the following:
1 - the background music sounds much louder.
2 - the sound from the game is barely audible.
3 - the sound effects sound MUCH louder.

I would try to track down the cause of this problem, but the bottom line is this.
If I render again without changing any settings (same project settings, same user settings, even rendering with the same preset), leaving everything as it is, it ends up rendering correctly...

This problem doesn't always occur.
About 20% of the probability of occurrence of such a bug, what is it related - I do not know. And sometimes rendering an extra 30 minutes is not very desirable...
 

Comments

rraud wrote on 6/26/2022, 10:06 AM

What format are the source files: mono, stereo, surround? What are the audio render settings? If combining or rendering mono from an out-of-phase stereo source, that could change the level (or cancel out a track all together).
To troubleshoot a codec issue, render a PCM wave file. Usually, what you hear in the preview is what you get.

MushoDen wrote on 6/26/2022, 12:35 PM

Source format is stereo
Render settings in the screenshots below

The most interesting thing is that I always have the same source video format, the project settings are always the same, the rendering settings are always the same, and this bug is rare, although it does happen

It's quite possible that if I render right now, everything will render properly.
That's why I can't determine the cause of this problem.

Due to inaccurate translation and personal illiteracy in this area, I slightly misunderstand the meaning of "To troubleshoot a codec issue, render a PCM wave file".

EricLNZ wrote on 6/26/2022, 6:04 PM

Render your audio to a PCM wave file (which is uncompressed). If that plays perfectly it narrows down the cause of your problem to possibly being a codec issue.

daniel-t wrote on 6/27/2022, 9:00 PM

I literally just had this happen last week once on a project. Rendered, and playing it back I could barely hear the narration. Everything else was normal. Scratching my head I checked the project and everything was fine… so I rendered it again, and it all came out as it should be.