The test fails with this: 1:10.76 TEST_START: Thread-TestrunnerManager-1 /media-source/mediasource-config-change-webm-a-bitrate.html 1:10.85 PROCESS_OUTPUT: Thread-3 (pid:1524) "WARNING: content window passed to PrivateBrowsingUtils.isWindowPrivate. Use isContentWindowPrivate instead (but only for frame scripts)." 1:10.85 PROCESS_OUTPUT: Thread-3 (pid:1524) "pbu_isWindowPrivate@resource://gre/modules/PrivateBrowsingUtils.jsm:25:14" 1:10.86 PROCESS_OUTPUT: Thread-3 (pid:1524) "nsBrowserAccess.prototype.openURI@chrome://browser/content/browser.js:14128:25" 1:10.86 PROCESS_OUTPUT: Thread-3 (pid:1524) "__marionetteFunc@dummy file:17:30" 1:10.86 PROCESS_OUTPUT: Thread-3 (pid:1524) "@dummy file:23:3" 1:10.86 PROCESS_OUTPUT: Thread-3 (pid:1524) "executeWithCallback@chrome://marionette/content/marionette-listener.js:684:5" 1:10.86 PROCESS_OUTPUT: Thread-3 (pid:1524) "executeAsyncScript@chrome://marionette/content/marionette-listener.js:577:3" 1:11.45 TEST_END: Thread-TestrunnerManager-1 Harness OK. Subtests passed 0/1. Unexpected 1 Tests webm audio-only bitrate changes. -------------------------------------- Expected PASS, got FAIL assert_greater_than: duration expected a number greater than 2 but got NaN 1:11.62 LOG: Thread-TestrunnerManager-1 WARNING u'runner_teardown' () 1:12.11 LOG: Thread-TestrunnerManager-1 INFO Setting up ssl 1:12.27 PROCESS_OUTPUT: Thread-TestrunnerManager-1 (pid:certutil) "" 1:12.31 PROCESS_OUTPUT: Thread-TestrunnerManager-1 (pid:certutil) "" 1:12.34 PROCESS_OUTPUT: Thread-TestrunnerManager-1 (pid:certutil) " Certificate Nickname Trust Attributes SSL,S/MIME,JAR/XPI web-platform-tests CT,, " Happens with the aurora win32 build and the nightly win32 and win64 builds. Happens on virtual machines and real hardware.

This test passes fine on the Mac: 1:06.38 TEST_START: Thread-TestrunnerManager-1 /media-source/mediasource-config-change-webm-a-bitrate.html 1:06.50 PROCESS_OUTPUT: Thread-2 (pid:22627) "WARNING: content window passed to PrivateBrowsingUtils.isWindowPrivate. Use isContentWindowPrivate instead (but only for frame scripts)." 1:06.50 PROCESS_OUTPUT: Thread-2 (pid:22627) "pbu_isWindowPrivate@resource://gre/modules/PrivateBrowsingUtils.jsm:25:14" 1:06.50 PROCESS_OUTPUT: Thread-2 (pid:22627) "nsBrowserAccess.prototype.openURI@chrome://browser/content/browser.js:14190:25" 1:06.50 PROCESS_OUTPUT: Thread-2 (pid:22627) "__marionetteFunc@dummy file:17:30" 1:06.50 PROCESS_OUTPUT: Thread-2 (pid:22627) "@dummy file:23:3" 1:06.50 PROCESS_OUTPUT: Thread-2 (pid:22627) "executeWithCallback@chrome://marionette/content/marionette-listener.js:684:5" 1:06.50 PROCESS_OUTPUT: Thread-2 (pid:22627) "executeAsyncScript@chrome://marionette/content/marionette-listener.js:577:3" 1:09.85 TEST_END: Thread-TestrunnerManager-1 Harness OK. Subtests passed 1/1. Unexpected 0 Aurora and Nighty; all Mac OS versions.

This test is unreliable on Windows, particularly with VMs.

Comment on attachment 8575793 [details] [diff] [review] Disable the mediasource-config-change-webm-a-bitrate.html test. Please review. Per discussion in MSE Standup, we are going to skip this test.

Comment on attachment 8575793 [details] [diff] [review] Disable the mediasource-config-change-webm-a-bitrate.html test. Review of attachment 8575793 [details] [diff] [review]: ----------------------------------------------------------------- I'm going to assume this does what it looks like it does, because I don't actually know...

We'd like to uplift this.

Will revisit when webm with the new MSE is enabled.

Removing leave-open keyword from resolved bugs, per :sylvestre.