[Webkit-unassigned] [Bug 200949] Media Source Extensions performance during seek

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=200949

--- Comment #8 from Dustin Kerstein <dustin.kerstein at gmail.com> ---
Hi Jer, the videos I'm testing with (and my use-case for PanoMoments.com) are entirely comprised of keyframes to minimize the amount of time (and frames) needed to seek. We've been using Media Source Extensions on Chrome/Firefox to effectively build an "ad-hoc non-sequential frame decoder" for the past few years. I understand that seeking isn't cheap when using a longer GOP, but when using 100% keyframes, seeking/decoding cost should be at its minimum. It just appears as though WebKit is doing something a bit different when seeking with MSE (both when seeking to "previous" buffered frames and when seeked rapidly). Have you been able to replicate either of those behaviors with the JSFiddles? I'd be happy to provide modified versions for testing the behavior in Chrome/Firefox for comparison.

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