Re: Audio echoes when opening in Shotcut but not when using other players

Bug
#1

This seems to happen for all wmv media, regardless of the audio codec.
(Other players like VLC work as expected.)

Shotcut version: 22.12.21 (prev. versions seems to have the same issue)
OS: Windows 10

The suggested solution to user ‘blueinferno’ was to convert to other formats:
In Shotcut you can use: Properties > menu button: Convert to Edit-friendly…

This works but creates quite large intermediate files.
Since this worked in earlier versions of Shotcut, is there any chance to fix this issue?

#2

I tested with this file that I found on the internet and it sounds the same to me in Shotcut and Windows Media Player:
https://filesamples.com/samples/video/wmv/sample_960x400_ocean_with_audio.wmv

Can you try that file and see how it sounds for you?

Can you clarify exactly which version works and which version does not work?

#3

Thanks for your fast response.

sample_960x400_ocean_with_audio.wmv
This file works.

Can you clarify exactly which version works and which version does not work?

Unfortunately I can’t give you the exact version.
Version 22.10.25 and 22.12.21 have the ‘echo’ issue.

I did a bit more research and found that some .rm (cook audio) files that have the echo issue.
I also found files with wma2 audio codec that have the echo issue and some that don’t?!

Maybe you can reproduce the issue with this file:
https://www.yellowsubroutine.com/content/private2015code/tallship-medium.wmv

Hope this helps.
Best regards
Thomas

#4

I hear it with tallship-medium.wmv. This broke in version 21.03.30 when we upgraded FFmpeg to version 5, a major new version that removed old APIs and required changes in our code to adapt. Not sure I will be able to fix it mainly due to lack of motivation.

#5

You could use HandBrake to convert your problematic files.

I converted tallship-medium.VMW to tallship-medium.MP4 with HandBrake and the resulting file was smaller than the original.
xQ3eU9w0YC

And it fixed that echo problem when used in Shotcut

#6

Thanks for providing the test clip. I have a potential fix for this which will be in the next release. Keep an eye out for the next beta build and test it with your project/files to make sure the fix works for you.