[Webkit-unassigned] [Bug 181663] Video Element cannot playback local Canvas.captureStream on iOS

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sun May 26 15:04:03 PDT 2019


--- Comment #2 from Brion Vibber <bvibber at wikimedia.org> ---
On a whim I tested in Safari on the iPhone Simulator and Adam's sample works there. I suspect the sample buffer pixel layout used by the capture isn't playable by native iOS's media server, whereas the simulator piggybacks on the macOS one for actual video decoding.

I've seen problems like that when manually decoding video to uncompressed video sample buffers on iOS, where not all formats that work on the simulator work on the native devices...

In this case, it may be fixable by doing a pixel format conversion on the frame (or capturing it directly to a format that works).

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