I just wanted to give a heads up to everyone that we enabled Media Source Extensions on nightly for WebM/VP9. This brings Adaptive Streaming capability to Firefox video playback. The feature is not complete so the pref will automatically turn off when it gets to beta/release if we do nothing.
You can check on YouTube by right clicking the playing video and selecting "Stats for nerds" which should appear above the "About the HTML5 player" option. If you see "DASH: yes" then you are now living in the future. This affects YouTube but may also affect sites that use MSE with WebM/VP9 but it could also affect sites that use MSE but fail to check codec compatibility. Please file any (unfiled) issues you experience as blocking bug 1083588. Don't expect it to be perfect and if you run into trouble you can set media.mediasource.enabled to false in your about:config Anthony _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
