[Problem/Bug]: Videos don't load correctly

[DmitryBorodiy]

What happened?

If you just open YouTube video in WebView2 it might not loads.

Importance

Blocking. My app's basic functions are not working due to this issue.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

Latest 131

SDK Version

131.0.2903.86

Framework

WinUI2/UWP

Operating System

Windows 11

OS Version

No response

Repro steps

Just create sample app and open YouTube

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

Regression in newer Runtime

Last working version (if regression)

No response

[ambikakunnath]

Can you kindly share if there are any specific repro steps? I tried with WinUI2/UWP samples with 131 runtime and I'm able to load and play youtube videos.

[DmitryBorodiy]

Videos freeze on other resources, there are problems with playback. Try creating several instances with WebView2.

[DmitryBorodiy]

Also here is issue from other guy
#4878

[DmitryBorodiy]

This is a serious problem that needs to be fixed immediately.

[DmitryBorodiy]

I have to switch to WebView(EdgeHTML) to play videos. At least they don't lag there.

[ambikakunnath]

Is this a regression that you recently observed? If so, can you provide the runtime version where it was working fine?

I tried creating 4 WebView2 controls in a WinUI2 app with youtube and the frame drop rate was around 2-5 frame per 2000 frames.

Can you also please try with this samples if the issue repros -- https://github.com/MicrosoftEdge/WebView2Samples/tree/main/SampleApps/webview2_sample_uwp?

[DmitryBorodiy]

The problem caused by custom UserAgent. So, YouTube can't work with another user agents.