[Webkit-unassigned] [Bug 175472] WebRTC video does not resume receiving when switching back to Safari 11 on iOS

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=175472

--- Comment #19 from Andrew Morris <andrew at tokbox.com> ---
@youenn: Oh actually, I know the one you mean, it only shows over the video if you have focus. This one right?

https://bugs.webkit.org/attachment.cgi?id=318316

Anyway, I think I know what is happening. When switching to the background, decoding stops. That means when you resume, a keyframe is needed. Disabling and enabling the video using the icon above triggers a keyframe and unfreezes the video. If a new participant joins, a keyframe is generated for the new user, and incidentally is sent to everyone, which also unfreezes the video.

I think Safari should send a keyframe request when it resumes decoding, and this will fix it. Wdyt?

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