 
PASS Test addSourceBuffer() with empty type 
PASS Test addSourceBuffer() with unsupported type 
FAIL Test addSourceBuffer() with Vorbis and VP8 assert_true: video/webm;codecs="vp8,vorbis" is supported expected true got false(stack: assert@http://127.0.0.1:8000/w3c/resources/testharness.js:2060:37
assert_true@http://127.0.0.1:8000/w3c/resources/testharness.js:663:15
http://127.0.0.1:8000/media/media-source/mediasource-addsourcebuffer.html:32:26
http://127.0.0.1:8000/media/media-source/mediasource-util.js:339:29
onSourceOpen@http://127.0.0.1:8000/media/media-source/mediasource-util.js:149:21
step@http://127.0.0.1:8000/w3c/resources/testharness.js:1160:30
http://127.0.0.1:8000/w3c/resources/testharness.js:1189:33)
FAIL Test addSourceBuffer() with Vorbis and VP8 in separate SourceBuffers assert_true: video/webm;codecs="vp8" is supported expected true got false(stack: assert@http://127.0.0.1:8000/w3c/resources/testharness.js:2060:37
assert_true@http://127.0.0.1:8000/w3c/resources/testharness.js:663:15
http://127.0.0.1:8000/media/media-source/mediasource-addsourcebuffer.html:46:26
http://127.0.0.1:8000/media/media-source/mediasource-util.js:339:29
onSourceOpen@http://127.0.0.1:8000/media/media-source/mediasource-util.js:149:21
step@http://127.0.0.1:8000/w3c/resources/testharness.js:1160:30
http://127.0.0.1:8000/w3c/resources/testharness.js:1189:33)
PASS Test addSourceBuffer() with AAC and H.264 
PASS Test addSourceBuffer() with AAC and H.264 in separate SourceBuffers