75184 2011-12-23 20:04:52 -0800 10 W3C video and audio canPlayType tests are failing on Mac and Win 2023-09-24 20:20:51 -0700 1 1 1 Unclassified WebKit Media 528+ (Nightly build) Unspecified Unspecified NEW InRadar, LayoutTestFailure P2 Normal --- 1 rniwa webkit-unassigned adele eric.carlson jberlin jean-yves.avenard jer.noble pilgrim rniwa webkit-bug-importer oldest_to_newest 526941 0 rniwa 2011-12-23 20:04:52 -0800 The following tests imported in r103470 are failing on Mac media/W3C/audio/canPlayType/canPlayType_supported_but_no_codecs_parameter_1.html media/W3C/audio/canPlayType/canPlayType_supported_but_no_codecs_parameter_2.html media/W3C/video/canPlayType/canPlayType_codecs_order_2.html media/W3C/video/canPlayType/canPlayType_codecs_order_3.html media/W3C/video/canPlayType/canPlayType_supported_but_no_codecs_parameter_2.html media/W3C/video/canPlayType/canPlayType_supported_but_no_codecs_parameter_3.html media/W3C/video/canPlayType/canPlayType_two_implies_one_3.html media/W3C/video/canPlayType/canPlayType_two_implies_one_4.html media/W3C/video/canPlayType/canPlayType_two_implies_one_5.html media/W3C/video/canPlayType/canPlayType_two_implies_one_6.html 638535 1 jberlin 2012-05-31 10:21:34 -0700 These tests were added to the Skipped list on Mac, but probably just should have been given expected failing results. I am going to add failing expected results for Windows. This is probably related to https://bugs.webkit.org/show_bug.cgi?id=85409 638538 2 webkit-bug-importer 2012-05-31 10:22:41 -0700 <rdar://problem/11566487> 638553 3 jberlin 2012-05-31 10:36:22 -0700 Added the Windows expected (failing?) results in http://trac.webkit.org/changeset/119120 1979714 4 jean-yves.avenard 2023-09-24 20:20:51 -0700 The tests are failing because it incorrectly assumes that if testing for codecs support in one container assumes that it will also be supported in another container. like: ``` if (v.canPlayType('video/mp4; codecs="avc1.42E01E, mp4a.40.2"') == "probably") { assert_equals( v.canPlayType('video/mp4; codecs="avc1.42E01E, mp4a.40.2"'), v.canPlayType('video/ogg; codecs="avc1.42E01E"'), "ability to play two codecs implies the ability to play one"); } ``` that avc1 and mp4a is supported in an mp4 doesn't imply that video/ogg is supported. WebKit on Mac or WPE doesn't support the ogg container.