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

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Aug 21 09:04:39 PDT 2019


--- Comment #2 from Dustin Kerstein <dustin.kerstein at gmail.com> ---
Upon further testing it doesn't seem like it requires a full loop of the file. The issue appears to be when seeking to a frame that has already been seeked to. Ex. (assuming all frames are keyframes)

1. Seek to frame 1 and it will take X milliseconds
2. Seek to frame 2 and it will take around X milliseconds
3. Seek to frame 1 and it will take Y milliseconds (and be 5-10 times longer that X)

I am also able to replicate similar behavior when seeking to contiguous frames even when they are being seeked to the very first time.

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