MediaElementAudioSource outputs zeroes due to CORS access restrictions

[ThatIsAPseudo]

Describe the bug
Skip-Silence does not work on Invidious, shows the error MediaElementAudioSource outputs zeroes due to CORS access restrictions.

To Reproduce
Steps to reproduce the behavior:

1. Enable skip-silence
2. Open https://yewtu.be/watch?v=DQ8orIurGxw
3. See error in developer console : MediaElementAudioSource outputs zeroes due to CORS access restrictions
4. Video sound does not work without reloading the page

Expected behavior
Skip-silence should work as expected.

Desktop (please complete the following information):

• OS: macOS Big Sur
• Browser: Vivaldi 4.0.2312.38
• Skip Silence Version 3

Additional context
I found this related Stack Overflow question, don't know if it could help
On youtube the extension works well though.

[vantezzen]

It looks like Invidious directly uses the video from googlevideo.com. Due to this Skip Silence is missing CORS permissions to access the volume of the video.
I don't know if Skip Silence's content script is able to go around this restriction so it might not be possible to fix this.

[vantezzen]

I still can't find a way to solve this issue, even when modifying response headers.

I created a test-extension to see how this could be achieved without needing to integrate it into Skip Silence: https://github.com/vantezzen/cors-audio-extension-test

Stackoverflow Discussion about this issue: https://stackoverflow.com/q/64519532/10590162

"only XMLHttpRequest and fetch will bypass cross origin restrictions" (regarding the host permission system, not headers)

Chrome Bug Tracker: https://bugs.chromium.org/p/chromium/issues/detail?id=477692

Solved by setting crossOrigin = 'anonymous' but that doesn't seem to work

https://bugs.chromium.org/p/chromium/issues/detail?id=511251

Also uses crossOrigin = 'anonymous'

[vantezzen]

Currently testing a new idea of using the background script instead of content script to analyze the volume on a per-tab basis instead (similar to how https://github.com/piousdeer/chrome-volume-manager works)

[vantezzen]

The next version of Skip silence will come with a selector to choose the recorder type:

I'm still looking into how this can be presented user-friendly but switching to a different analysis method will solve this issue.