Bug 37591

Summary: HTML5 "video" tag with poster frame defined "flashes" right before movie displays
Product: WebKit Reporter: Dan Wood <dwood>
Component: MediaAssignee: Eric Carlson <eric.carlson>
Status: RESOLVED FIXED    
Severity: Normal CC: ademar, ap, eric.carlson, jer.noble, silviapfeiffer1
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Mac (Intel)   
OS: OS X 10.6   
URL: http://www.karelia.com/scripts/claire2.html
Bug Depends on:    
Bug Blocks: 51249    
Attachments:
Description Flags
proposed patch.
none
revised patch. simon.fraser: review+

Dan Wood
Reported 2010-04-14 11:31:50 PDT
Safari: HTML5 "video" tag won't show movie when poster attribute is defined Steps to Reproduce: 1. Create a web page with a <video> tag with the "poster" attribute. For instance, see http://www.karelia.com/scripts/claire2.html 2. Load the page Expected Results: The movie should instantly replace the poster image Actual Results: The poster image disappears for a long enough time to notice, before it is replaced by the movie. Notes: This is using TOT Webkit.
Attachments
proposed patch. (14.76 KB, patch)
2010-07-22 15:26 PDT, Eric Carlson 		no flags
DetailsFormatted DiffDiff
revised patch. (28.93 KB, patch)
2010-08-06 15:56 PDT, Eric Carlson 		simon.fraser: review+
DetailsFormatted DiffDiff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Silvia Pfeiffer
Comment 1 2010-05-09 20:25:38 PDT
The effect you are describing happens for me in Google Chrome only. In my Safari (Version 4.0.5 (6531.22.7)) the behaviour is even more broken for this page, since the first video doesn't play at all, even though it is on autoplay. I have actually noticed generally that if I set a poster attribute in Google Chrome or Safari and don't set autoplay, that poster frame flashes briefly, then disappears and is replaced with the first frame of the video. While that is acceptable according to the HTML5 specification, I don't think it is what a Web developer or user would expect. In fact, this is also inconsistent with the behaviour of Opera and Firefox, which keep displaying the poster frame until the user hits the play button (or the JS play function is called).
Eric Carlson
Comment 2 2010-07-22 15:26:12 PDT
Created attachment 62348 [details] proposed patch.
Eric Carlson
Comment 3 2010-08-06 15:56:49 PDT
Created attachment 63775 [details] revised patch.
Eric Carlson
Comment 4 2010-08-06 16:37:23 PDT
http://trac.webkit.org/changeset/64884
Ademar Reis
Comment 5 2011-01-24 12:19:05 PST
Revision r64884 cherry-picked into qtwebkit-2.2 with commit 787fad8 <http://gitorious.org/webkit/qtwebkit/commit/787fad8>
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