- From: Eric Carlson <eric.carlson@apple.com>
- Date: Tue, 13 Apr 2010 07:50:11 -0700
On Apr 13, 2010, at 12:28 AM, Jonas Sicking wrote: > Will implementations want to do the rendering of the subtitles off the > main thread? I believe many browsers are, or are planning to, render > the actual video graphics using a separate thread. If that is correct, > do we want to support rendering of the subtitles on a separate thread > too? > > Or is it enough to do the rendering on the main thread, but composit > using a separate thread? > > If rendering is expected to happen on a separate thread, then CSS is > possibly not the right solution as most CSS engines are > main-thread-only today. > It seems to me that the thread subtitles are composed, rendered, and/or composited on is an implementation detail that we should not try to spec. People are extremely sensitive to audio/video sync but we don't mandate how that should be handled, why start with captions? eric
Received on Tuesday, 13 April 2010 07:50:11 UTC