[whatwg] HTML5 video seeking

Aaron Colwell acolwell at chromium.org
Mon Nov 14 15:49:32 PST 2011


I was looking at the seeking
had a question about step 10.

10. Wait until the user agent has established whether or not the media
data for the new playback position is available, and, if it is, until it
has decoded enough data to play back that position.

Does this mean the user agent must resume playback at the exact location
What if the nearest keyframe is several seconds away?
Is the UA expected to decode and toss the frames instead of starting
playback at the nearest keyframe?

On desktop machines I don't think this would be a problem, but on mobile
devices it might be since the hardware may not be able to decode
significantly faster than realtime. What is the intended behavior for such
constrained devices?


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