[Webkit-unassigned] [Bug 220461] MediaStreamRecorder does not work in WKWebView-based browsers like Chrome

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220461

Ali Juma <ajuma at chromium.org> changed:

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                 CC|                            |ajuma at chromium.org

--- Comment #1 from Ali Juma <ajuma at chromium.org> ---
(In reply to Urs Wolfer from comment #0)
> While the following example works fine in Safari on iOS 14.3, it seems not
> to work in Chrome on the same device:
> https://jsfiddle.net/vyapfckd/1/
> 
> (Pressing the start buttons works, but the download button fails to deliver
> the result.)

Thanks for reporting this!

The issue is that the 'download' attribute is not supported in WKWebView. Chrome can workaround this for file downloads (by detecting that we're trying to navigate to a MIME type that can't be rendered by WKWebView) but there's no way to work around this for blobs.

Bug 174076 and bug 216918 are related to this.

Bug 217747 might fix this when it makes it into a release.

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