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> Implemented a subset of the Media Source Extensions (MSE) API to allow native HTML5 playback on YouTube This is great! Actually just today I was wondering wh

> Implemented a subset of the Media Source Extensions (MSE) API to allow native HTML5 playback on YouTube This is great! Actually just today I was wondering why Firefox was still using the Flash player for Youtube. Now it isn't anymore :)

kzrdude 12y ago
Firefox was stuck on 360p html5 video before, I'm going to try this asap
JoshTriplett 12y ago
As far as I can tell, HTML5 playback has worked just fine in Firefox for a while (including HD), for any video that doesn't have ads. MSE just allows additional features in HTML5 playback, such as DASH (which dynamically adjusts bitrate to match available connection bandwidth/quality). (Personally, whenever it fails, or sometimes even when it doesn't, I use youtube-dl.)
- elektronjunge 12y ago
  This is correct. I haven't had flash on my computer for nearly a year and I've been able to watch hd youtube videos in firefox.
- shmerl 12y ago
  No, it didn't work for anything higher than 720p. For those Youtube requires using DASH + MSE.
  - jfreax 12y ago
    I read this everywhere, but I am able to watch 1080p Youtube videos with html5 just fine since, yeahh... always, at least it feels like that. I tried it just a second ago. So it works definitively with Firefox 36 on Gentoo Linux. What am I doing "wrong"? What am I missing here?
    - shmerl 12y ago
      > I am able to watch 1080p Youtube videos with html5 just fine since, yeahh... always Did you enable media.mediasource.enabled in about:config? Check it for Firefox 36, and if it's true, see if it's highlighted or not. If yes (and you are using the stock Mozilla build and not Gentoo custom one) it means you don't have the default. Sure, you could enable it already for a while there, but it was buggy. For me the default was false. Strangely, it's false even in Firefox 37, which contradicts the release notes. But at least it works well now in actual videos when enabled.
      - doublec 12y ago
        It's only enabled on Windows in this release. If you're on Linux or Mac that will probably why you are seeing the setting is defaulting to false.
      - lelandbatey 12y ago
        You are correct. This is a screenshot taken on Firefox 36.0.4 on Ubuntu 14.04.2: http://i.imgur.com/XMIgQfi.png http://i.imgur.com/XMIgQfi.png As you can see, media.mediasource.enabled is disabled by default.
shmerl 12y ago
You could disable Flash, but HTML5 without MSE only gave 720p max on Youtube.
hobarrera 12y ago
Youtube has supported HTML5 playback for about 4-5 years, though some videos do not. There's a few plugins (eg: youtube-center) that let you play any video via the HTML5 player. Personally, I got rid of flash sometime around 2011. The only side effect is firefox not crashing ever. As a bonus, I noticed that a few months ago youtube added video ads that you can't skip to lots of videos (noticed it on my gf's iPad). You'll never have to deal with those with the HTML5 player (or maybe it's just adblock).
- jeromegv 12y ago
  iPad uses HTML5 since there's no flash on iOS, might be your adblock.
gog 12y ago
Hm, I am still getting the flash player. It does work if I disable Flash in the browser, but if it is enabled the videos are always played via the Flash plugin. Is there some setting I have to turn on/off?
- doublec 12y ago
  MSE support is Windows only for this release. You can turn it on for other platforms manually via an about:config setting but it is less tested.
- reitanqild 12y ago
  Here you are: https://www.youtube.com/html5 https://www.youtube.com/html5
NeutronBoy 12y ago
So now Twitch is the only HTML5 holdout that I use on a regular basis... and the only reason I still use Chrome for anything.
doodpants 12y ago
Ever since YouTube switched to serving HTML5 video by default a few months ago, I've been unable to watch HD videos in full-screen mode at a decent framerate using Firefox on my Mac. Where by "decent", I mean > 0.5 FPS. As a result, I've started switching to Safari whenever I want to watch a video. Firefox 37 seems to have fixed this issue for me.

kzrdude 12y ago

Firefox was stuck on 360p html5 video before, I'm going to try this asap

JoshTriplett 12y ago

As far as I can tell, HTML5 playback has worked just fine in Firefox for a while (including HD), for any video that doesn't have ads. MSE just allows additional features in HTML5 playback, such as DASH (which dynamically adjusts bitrate to match available connection bandwidth/quality). (Personally, whenever it fails, or sometimes even when it doesn't, I use youtube-dl.)

elektronjunge 12y ago
This is correct. I haven't had flash on my computer for nearly a year and I've been able to watch hd youtube videos in firefox.
shmerl 12y ago
No, it didn't work for anything higher than 720p. For those Youtube requires using DASH + MSE.
- jfreax 12y ago
  I read this everywhere, but I am able to watch 1080p Youtube videos with html5 just fine since, yeahh... always, at least it feels like that. I tried it just a second ago. So it works definitively with Firefox 36 on Gentoo Linux. What am I doing "wrong"? What am I missing here?
  - shmerl 12y ago
    > I am able to watch 1080p Youtube videos with html5 just fine since, yeahh... always Did you enable media.mediasource.enabled in about:config? Check it for Firefox 36, and if it's true, see if it's highlighted or not. If yes (and you are using the stock Mozilla build and not Gentoo custom one) it means you don't have the default. Sure, you could enable it already for a while there, but it was buggy. For me the default was false. Strangely, it's false even in Firefox 37, which contradicts the release notes. But at least it works well now in actual videos when enabled.
    - doublec 12y ago
      It's only enabled on Windows in this release. If you're on Linux or Mac that will probably why you are seeing the setting is defaulting to false.
    - lelandbatey 12y ago
      You are correct. This is a screenshot taken on Firefox 36.0.4 on Ubuntu 14.04.2: http://i.imgur.com/XMIgQfi.png http://i.imgur.com/XMIgQfi.png As you can see, media.mediasource.enabled is disabled by default.

shmerl 12y ago

You could disable Flash, but HTML5 without MSE only gave 720p max on Youtube.

hobarrera 12y ago

Youtube has supported HTML5 playback for about 4-5 years, though some videos do not. There's a few plugins (eg: youtube-center) that let you play any video via the HTML5 player. Personally, I got rid of flash sometime around 2011. The only side effect is firefox not crashing ever. As a bonus, I noticed that a few months ago youtube added video ads that you can't skip to lots of videos (noticed it on my gf's iPad). You'll never have to deal with those with the HTML5 player (or maybe it's just adblock).

jeromegv 12y ago
iPad uses HTML5 since there's no flash on iOS, might be your adblock.

gog 12y ago

Hm, I am still getting the flash player. It does work if I disable Flash in the browser, but if it is enabled the videos are always played via the Flash plugin. Is there some setting I have to turn on/off?

doublec 12y ago
MSE support is Windows only for this release. You can turn it on for other platforms manually via an about:config setting but it is less tested.
reitanqild 12y ago
Here you are: https://www.youtube.com/html5 https://www.youtube.com/html5

NeutronBoy 12y ago

So now Twitch is the only HTML5 holdout that I use on a regular basis... and the only reason I still use Chrome for anything.

doodpants 12y ago

Ever since YouTube switched to serving HTML5 video by default a few months ago, I've been unable to watch HD videos in full-screen mode at a decent framerate using Firefox on my Mac. Where by "decent", I mean > 0.5 FPS. As a result, I've started switching to Safari whenever I want to watch a video. Firefox 37 seems to have fixed this issue for me.