[Bug]: permanent loading when default video format is "audio format"

[Jiejue233]

Guidelines

• [X] I have encountered this bug in the latest release of FreeTube.
• [x] I have encountered this bug in the official downloads of FreeTube.
• [X] I have searched the issue tracker for open and closed issues that are similar to the bug report I want to file, without success.
• [X] I have searched the documentation for information that matches the description of the bug I want to file, without success.
• [X] This issue contains only one bug.

Describe the bug

I didn't encounter this bug for every video, but I can reproduce the bug once I encounters it

1. choose the "default video format" to "audio format"
2. play some video (for me, this bug happens more often when the video is a generated video, like this )
3. the video is loading permanently 3.1. if now change the "default video format" to "dash format" then 3.2. a bug info NotSupportedError: Failed to load because no supported source was found. is popped but the video is playing

Expected Behavior

the video is playing as it should be

Issue Labels

API issue, content not loading

FreeTube Version

v0.21.3 beta

Operating System Version

Windows 10 19045.4651

Installation Method

.exe

Primary API used

Local API

Last Known Working FreeTube Version (If Any)

No response

Additional Information

when the primary API is local API: step 3.2 a bug info NotSupportedError: Failed to load because no supported source was found. is popped and the video is also loading permanently Yes, I do have checked #5511 but I don't think they are a same bug

Nightly Build

• [ ] I have encountered this bug in the latest nightly build.

[peterweissbier]

this just happened for me too latest version

[Jiejue233]

Update:

I have made several test, then I found that this is possibly caused by the VPN proxies and/or the provider. I grabbed and checked every outgoing request, and most requests to either invidious and youtube directly is returning 403 forbidden from a few specific regions. I'm not providing the exact region, but those proxies are mostly centered at Asia and a few in north America.

Conclusion:

this is happened because the VPN proxies is blocked by either invidious API or youtube

[efb4f5ff-1298-471a-8973-3d47447115dc]

Closing as we cant do anything about the geo restrictions