13.10 and 13.11 overly amplified in auto normalization

Lancelot_Chan

https://www.youtube.com/watch?v=uTfYEPNIliA
The audio becomes clipping in 13.10 and 13.11, through repetitively auto normalization by opening the project again and again.

13.09 doesn't have this problem.

borate

Not seen here in 13.11. Loaded a file, saved it, loaded the same project again and again. Level stayed the same.

Upload and share the file in question, please.

Lancelot_Chan

https://drive.google.com/drive/folders/1NFwGOT44Qbvi53nGJ8gHBlZ4eBTVJtOp?usp=sharing

Have you compared the level with 13.09?

borate

Same in 13.09, when reloading a saved project.

But, if the exported result is loaded the audio bumps up. That's probably not right, as it's already been normalized. Seen in earlier versions as well.

Unchecking the "auto normalize" box in OPTIONS | MEDIA should overcome it. Reported.

Lancelot_Chan

Thanks. Yes, that bumps exceed the clipping limit.

Lancelot_Chan

Just confirmed that 13.12 still has the same problem.

borate

Can't spot the problem here. With "automatically normalize..." enabled for the initial save, each subsequent load of the project doesn't change the audio levels.

However, if an exported project is reloaded, then audio will bump up if "auto" isn't disabled. May require cache to be cleared as well.

Reloading of an exported file isn't often needed. Still, audio that's once been normalized probably shouldn't be normalized again.

https://www.nch.com.au/software/bug.html?software=VideoPad

Lancelot_Chan

https://www.youtube.com/watch?v=Bvyl06pCWSQ

This is how it is like on my end. I started from installing the 13.12, then load the project up, the first time it was fine. Then I made a new project to clear screen, then load the same project up again. This time, the audio file is super-normalized. The third time is the same.

borate

Suggest not using 13.12 as some audio issues are being addressed.

Cannot replicate your results here in 13.11, following what seems to be the same procedure...

buzz.mp4

Lancelot_Chan

Would it be because my audio files were not from the video but from the NCH library? Dunno if it makes any difference.

borate

Ran a test with a bell from the NCH library. Sure enough, simply reloading a saved project bumps up the audio. No need to clear the screen.

Lancelot_Chan

Hope they fix this up soon.

borate

See what 13.14 does for you. 32-bit, with the usual beta caveats.

Lancelot_Chan

13.14 no longer repetitively normalize a file. However, there are 2 problems. 1, it still over normalize and make clipping sounds. I include the captured file of 13.09 vs 13.14 here. You can see the 13.14 one shows clipping.

http://www.rsw.com.hk/1309.jpg
http://www.rsw.com.hk/1314.jpg

Another problem is when you zoom in the 13.14, after certain level of zooming the audio files will display as flat lines!

borate

Not seeing level change or clipping upon project reload in 13.14...

Original load... Reload...

But the zoom issue is evident. Work in progress.

Lancelot_Chan

Well, once again, those audio files I showed were from NCH library, not from videos. Maybe it shows a difference.

borate

Doesn't seem to in 13.14, using an NCH bell sound...

Original load... Reload...

Lancelot_Chan

Does the level compare the same to 13.09? Not in my case.

borate

Same. NCH bell sound in 13.09... Share the file that you tested.

Lancelot_Chan

https://drive.google.com/drive/folders/1NFwGOT44Qbvi53nGJ8gHBlZ4eBTVJtOp?usp=sharing
the file I tested are all here.