Unstable. Crashes. No Starts. Rated 1 out of 5 stars

This add-on has cause random crashes, instability and has stopped FF from starting properly, even if FF does not have YouTube running. I have disabled this add-on and all of these problems have gone away after using it for several weeks.

Rated 5 out of 5 stars

Great addon, with FireFox Version 36.0 now supports HTML5 1080p play back if "media.mediasource.enabled" is turned on in the about:config setup, can the developer please update the settings to allow this. Thanks.

Rated 5 out of 5 stars

Muito Bom! :D
Português - Brasil.

Great extension, works as advertised Rated 5 out of 5 stars

This is a great review, it works exactly as advertised. And with Upcoming releases of Firefox offering full HTML5 support, this will be very useful.

It would be nice to see higher options for quality, given that it will be possible to use them in upcoming Firefox releases.

Excellent Addon, it helps me to watch Youtube video's Rated 5 out of 5 stars

This plugin helps me to play Youtube videos, I run a Hackintosh system: iAtkos ML 10.8.4 and I have the issue where the standard Youtube player displays the blocky pink and green screen, it then proceeds to lock up my system and I have to restart, using this Addon gets round that until I either upgrade to Yosemite or find a fix

Thank you for taking the time to write this Addon,

Rated 1 out of 5 stars

HTML5 video produces an color space bug in Firefox (The video will be slow in contrast.). It's not recommend to use HTML5 video in FF.

I have been using html5 videos for a long time under windows and linux and never had any problems.
But even if there were such problems, these are likely firefox bugs and I am not sure why you would blame my addon for it. It just forces youtube to use its html5 player, but the videos themselves are handled by firefox.

Rated 5 out of 5 stars

Dziala swietnie, dzieki

Rated 5 out of 5 stars

sehr gut das addon verwende es schon lange tut was es soll. was ich persönlich noch vermisse ist eine option um die anmerkungen abzuschalten

Vielen Dank für deine Bewertung!
Eine solche Option ist bereits für die nächste Version geplant [1], allerdings weiß ich leider noch nicht, wann diese erscheinen wird.

[1]: https://github.com/klemens/ff-youtube-all-html5/issues/21

Rated 4 out of 5 stars

This is a great add on only if there were a option to change it back to 360p the original this would be nice if you could add this thanks

Thanks for your review.
Unfortunately I don't understand your suggestion. You can write me an email or open an issue at github if you want to elaborate on it.

Rated 4 out of 5 stars

Almost perfect. Need option to disable video annotations and toggle Theater mode.

Thanks for your review!

Both your suggestions are already planned [1, 2], but unfortunately I currently don't have much time for this addon.

[1]: https://github.com/klemens/ff-youtube-all-html5/issues/21
[2]: https://github.com/klemens/ff-youtube-all-html5/issues/39

Wonderful. Rated 5 out of 5 stars

It plays almost any video without having flash installed. I use v.2.1.3 on Firefox/iceweasel 31.2 on Debian 7. Thanks Klemens, for publishing this under the GNU license.

I don't understand this extension Rated 1 out of 5 stars

How is this supposed to work? Is it not supposed to force html5? Because it doesn't do that. It just says "Your browser does not currently recognize any of the video formats..." or "an error occurred, please try again later".
fx 33.1.1


Have you read the description?
Firefox 33 on mac does not support H264 at the moment, so most videos can not be played there using html5.
It seems H264 support will be available in Firefox 34 (https://bugzilla.mozilla.org/show_bug.cgi?id=941296), but I am not sure if it will be enabled by default.

Great plugin + request Rated 4 out of 5 stars

As of today I have some issues on Youtube videos showing black screen and cant play videos.

Please continue support for Palemoon (25) and older Firefox,
for new 2.2 version.

Issues here are for version 2.1.3 started just these few days, so maybe youtube changed something.
I use Palemoon browser 25.1.0 and I saw that beta versions do not support this browser anymore

Do these problems occur with the current stable version or with the 2.2.0 beta and with which firefox version? You can open an issue at github or write me an email.
The upcoming 2.2 version will require at least firefox 30, because it depends on a new api that was introduced there. But that should be no problem, because the oldest supported firefox version currently is 31 ESR, 24 is no longer supported.

As with the palemoon issue, you can also contact me, but I cannot promise anything here.

Great! Rated 5 out of 5 stars

Only one problem: Playlists also stops autoplaying.
Firefox 33.1
Addon 2.1.3
Edit: When I have the option turned on!

Do you mean they also stop when you are using the "Start videos paused" option? Or don't they autoplay even when this settings is turned off?
You can edit your review or contact me directly via email.

Edit: Ok, I'll see if I can implement an option to disable autoplay only for normal video pages and not for playlists.

Rated 5 out of 5 stars

Flawless. works exactly as described.

Rated 5 out of 5 stars

Needed to force 720p playback, only this extension worked as described for my configuration (FF 33 @ Windows, no Flash). Thanks for helping ruining Flash Player. :-)

Not working with FF 33 Rated 3 out of 5 stars

Believe it stopped working on FF33, causing frequent tab crashes. Vids were all in flash.

EDIT: sorry seems like it wasn't this addon causing crashes on my tree tabs. Still not sure what it is

Yup, most features stopped working in Fireofx 33 because of an API-change. I am currently trying to fix all these cases. Unfortunately I cannot provide an ETA yet.

/edit: But this shouldn't really cause tab crashes, hm.

Rated 5 out of 5 stars

Hi echt tolles Addon!
Habe jedoch ein problem mit dem Ladebalken.
Dieser geht nicht bis ganz zum Ende des Videos.
Hier mal ein Screenshot:

Liebe Grüße und mach weiter so!

Vielen Dank für deine Bewertung!

Das Problem mit dem Ladebalken sollte in der Betaversion 2.2.0beta2 behoben sein. In dieser Beta habe ich jedoch auch einige Funktionen grundlegend verändert, weshalb es möglicherweise noch zu kleinen Problemen kommen kann.
Wenn du die Beta installierst (im Abschnitt Entwicklerecke auf der Add-on Seite ganz unten), bekommst zu auch zukünftige Betas als automatisches Update.

it's not working about play mix's videos Rated 1 out of 5 stars

It's difficult to play every a mix's videos. Specially a singer and his mix's songs.

Sorry, I don't understand your problem.
You can contact me via email and explain your problem in detail, maybe I can help.

Video resolution option not working in Firefox 33.0 beta Rated 5 out of 5 stars


Thank you for this excellent add-on, I have been using it for quite a while, however since I updated to Firefox 33.0 beta the video resolution option seems not to work. I always have it set to 720p but the videos now since FF 33b only plays in 360p.

I realise I can change the resolution to 720p manually on YouTube but this use to be done automatically by your add-on.

Would you please be kind enough to take a look at this for me.

Thank you.

Edit: Forgot to mention I'm using your 2.2.0beta2 version of this add-on.

Hm, I just tested this on firefox 33 and the current nightly and did not notice any problems.

Could you please check that you are using the proper settings for my addon (the quality option has been reset for the beta) and that you are not accidentally using the flash player?
Does this occur on all videos?

You can contact me via email if you want. (I don't get notifications for edits of reviews)