The video player for the website giantbomb.com doesn't launch when viewed using the Firefox 4.0b2pre 20100710 build.
Disabling IPC and D2D acceleration has no effect. Attaching comparison screenshots. "Bad" is from Trunk build, "good" is from 3.6.7 Beta1.
Regression window: Works: http://hg.mozilla.org/mozilla-central/rev/b7f3c1c9fb57 Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a1pre) Gecko/20091201 Minefield/3.7a1pre ID:20091201052221 Fails: http://hg.mozilla.org/mozilla-central/rev/a5e1b195ecf7 Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a1pre) Gecko/20091202 Minefield/3.7a1pre ID:20091202045824 Pushlog: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=b7f3c1c9fb57&tochange=a5e1b195ecf7
Regression window in tracemonkey build Works: http://hg.mozilla.org/tracemonkey/rev/c84622414ed3 Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a1pre) Gecko/20091119 Minefield/3.7a1pre ID:20091119045932 Fails: http://hg.mozilla.org/tracemonkey/rev/2ca2a236da89 Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a1pre) Gecko/20091120 Minefield/3.7a1pre ID:20091120052422 Pushlog: http://hg.mozilla.org/tracemonkey/pushloghtml?fromchange=c84622414ed3&tochange=2ca2a236da89
Error console: Error: LaunchPad is undefined Source File: http://media.giantbomb.com/media/video/js/video_10027.js Line: 1
Yeah, not sure what the issue is here, since loading up this page in FF 3.6.8 reports no errors at all in the Error Console. A refresh of the page in the 08/24 nightly for Firefox 4 returns the following console errors: Error: assignment to undeclared variable _VINES_RANDOM_IDS Source File: http://media.giantbomb.com/media/vine/js/base_10031.js Line: 1 Error: LaunchPad is undefined Source File: http://media.giantbomb.com/media/video/js/video_10027.js Line: 1 Error: assignment to undeclared variable QUESTMANAGER Source File: http://media.giantbomb.com/media/quest/js/quest_10008.js Line: 1 Error: _VINES_RANDOM_IDS is not defined Source File: http://media.giantbomb.com/media/vine/js/base_10031.js Line: 1 Error: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them Source File: http://media.giantbomb.com/media/vine/js/mootools-1.2.4-core-nc_10001.js Line: 1 Going to post this on the site's support forum as well so hopefully their devs can take a look. This definitely appears to be JS changes between FF3 and FF4 that's the culprit here though.
Probably I've got the same error on this (german) Page: http://vid.buffed.de/v/tHeI18ASW2E/buffedShow/buffedShow-207/ With FF 4 beta 4 and 5 (not tested earlier beta-versions) instead of showing the Flash-Video there's only a white Flash-frame. Expected: First this side shows a short add-video an then the main-video. It workes in FF 3.6 and any other browser. When testing make sure you don't try to block adds, since this may interfere with the add-video.
http://media.giantbomb.com/media/vine/js/base_10031.js starts with "use strict"; Maybe same as Bug 607188. and Tech Evangelism .
Fixed by the website author. Closing.