- From: Brian Birtles <bbirtles@mozilla.com>
- Date: Wed, 17 Jun 2015 09:55:23 +0900
- To: whatwg <whatwg@lists.whatwg.org>
The HTMLMediaElement.load()[1] method currently cancels playback of the current resource and runs the resource selection algorithm[2] (and in turn the resource fetch algorithm[3]). When preload="none", however, the resource fetch algorithm doesn't require the UA to load data or progress to HAVE_METADATA--instead it can suspend the load until, for example, the user goes to play the video. In Firefox we've hit compatibility issues where some sites are calling load() on preload="none" resources and expecting to get a "loadedmetadata" event.[4] Apparently, even with preload="none", Chrome and IE progress to HAVE_METADATA when load() is called. Presto, apparently, does not. I've just landed a patch in Firefox to make a call to load() treat preload="none" as preload="metadata" to match the behavior of Chrome/IE in this case. (Note that we need to do this not only when preload="none" is explicitly specified but also when the preload attribute is missing and the UA's missing value default for preload is 'none'--as is the case for us on mobile.) Is it possible to get this reflected in the spec? Best regards, Brian [1] https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-load [2] https://html.spec.whatwg.org/multipage/embedded-content.html#concept-media-load-algorithm [3] https://html.spec.whatwg.org/multipage/embedded-content.html#concept-media-load-resource [4] https://bugzilla.mozilla.org/show_bug.cgi?id=1165203
Received on Wednesday, 17 June 2015 00:55:48 UTC