Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 68d7d604b06e9bc2658348bb6960ab3886851b9f
https://github.com/WebKit/WebKit/commit/68d7d604b06e9bc2658348bb6960ab3886851b9f
Author: Enrique Ocaña González <[email protected]>
Date: 2022-09-23 (Fri, 23 Sep 2022)
Changed paths:
M Source/WebCore/Modules/mediasource/SourceBuffer.cpp
Log Message:
-----------
[MSE] Adjust buffering rate monitor to react faster
https://bugs.webkit.org/show_bug.cgi?id=245486
Reviewed by Xabier Rodriguez-Calvar.
As data is comming in (in bursts), the buffering rate monitoring algorithm
calculates an
average rate that will be used to determine if we can play through the content
without
interruption (assuming relatively constant rate). To filter out variations in
rate, the
algorithm reacts more slowly (by design) and may take more time to reach the
required rate
threshold to unblock playback, even though the incoming rate is sufficient to
sustain
playback. If it takes too long, then a client using MSE may take corrective
actions wich may
disturb or even abort the playback.
By adjusting the 'ExponentialMovingAverageCoefficient' we can make the
algorithm react
faster to presence of data and unblock playback. Side effect is that it reacts
also faster
to absence of data, but that should not affect playback as data has been
buffered already
allowing playback to be sustained.
Original author: Pawel Lampe <[email protected]>
See: https://github.com/WebPlatformForEmbedded/WPEWebKit/pull/927
See: https://github.com/WebPlatformForEmbedded/WPEWebKit/issues/928
* Source/WebCore/Modules/mediasource/SourceBuffer.cpp: Adjust
ExponentialMovingAverageCoefficient from 0.1 to 0.2.
Canonical link: https://commits.webkit.org/254781@main
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