Open Bug 774699 Opened 13 years ago Updated 3 years ago

Drawing the timeline of a video element invalidates a region of the size of the whole video

Categories

(Core :: Layout, defect)

Product:
Core
Component:
Layout
Type:
defect

Tracking

()

People

(Reporter: nical, Unassigned)

Details

When playing an HTML5 video, we use a thebes layer of the size of the video for the timeline, which causes invalidation of the entire video element when the timeline is displayed. We don't need to be invalidating the whole video frame since we are using an image layer for the video. The performance degradation might be hurting us particularly on mobile.
Summary: Drawing the timeline of a video element invalidates the a region of the size of the whole video → Drawing the timeline of a video element invalidates a region of the size of the whole video
Severity: normal → S3
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