Annotations Rated 1 out of 5 stars

There is no way of disabling these annoying annotations!

There will be an option to hide all annotations in the next version 3.1.0:
Unfortunately I cannot tell you an ETA yet, but it shouldn't take too long.

Clipping, no volume control - set too loud! Rated 3 out of 5 stars

Volume control nonexistent, 'clipping' of loud signals in many videos makes speakers pop and click at high frequencies. Same problem with other players after upgrading to this version of FF. Nothing to do with either computer audio or amp settings -happens at any device or amp volume. Clipping could be caused in other previous players when slider manually set too high. Now it is an annoying and dangerous default for speakers. If slider is disabled, please at least have default set to 75%, not full blast.
Firefox ver=38.2.1, player ver=3.0.0, OS=Solaris11.2, o/p.device=OSSv4AudioMixer, o/p.hardware=RealtekALC885codec, cable=S/PDIF, amp=integraDTR20.2, spkr=psbImagine.

'Fix ...bug...' button has no effect on the slider or volume, whether checked/activated or not. That is something I saw and tried before; still has no effect now.
Edit (2015-09-29): Slider widget always becomes visible on hovering and can be visually manipulated, even visually muted, as expected. But that still has absolutely no influence on the 100% volume level of youtube transmissions, regardless what position it is visually set to.

I agree there is a disconnect between the slider widget and what the addon is doing, and regardless of the setting of the 'Fix...bug...' button. But that's part of the problem, as there is no option or way to reduce the destructive 100% volume setting to something less.

Please apologize my late reply.

You are right, if "Fix volume bug on YouTube" is activated in the addon settings, the addon sets the volume to 100% at the start of the video. However if this option is not activated (which should be the default after installing the addon), the volume of the video as set by youtube is not changed in any way.
Have you disabled this option?

Edit (2015-09-28): So you mean the volume slider is not displayed at all for you? It appears for me if I hover the speaker icon ( I have no idea what could be causing this, as my addon doesn't fiddle with the slider at all.

Edit (2015-10-08): Hm, this sounds like a bug in the youtube player or in firefox. I can send you a test version of my addon that sets the volume to say 50%, but I am not sure that this will solve the problem. Just write me an email to if you want to test it anyway.

Not activating at all Rated 4 out of 5 stars

Seems that there is an issue

Even if I set my default resolution, size and method, the Addon never loads it, even on videos that allow the resolution

Is there a way to clear up the setting. FYI I tried uninstalling but didnt work

You can reset the settings in about:config, they use the prefix "extensions.jid1-qj0w91o64N7Eeg@jetpack". However at least the player size should work regardless of the loading method you choose. Does the small button of the addon appear in the top right corner of the youtube site? Which firefox version do you use?

You can contact me via email if you want.

Rated 5 out of 5 stars

Awesome! Literally the only addon out of hundreds that will properly resize the youtube player. Thanks!

Rated 5 out of 5 stars

I give 5 stars to this awesome plugin, but there's some problems right now we can't disable annotations on videos anymore if this extension is installed, we can't disable the annotations even in our youtube settings, the annotations are back when we save, every single time, quite annoying.

This user has a previous review of this add-on.

Yes, this is known problem, I will add an option to completely hide all annotations in the next version!

Rated 5 out of 5 stars

Firefox default use HTML5 on YT. Only on other sites YT movies are in flash(embeded video)

Rated 5 out of 5 stars

Best AddOn for youtube.
You can force 720p even though Youtube would like you to use 320p.
You can buffer the full Videos even though Youtube tries to prevent this.
You can force theater mode even though Youtube tries to force you to the 320p player.

Two little problems with "Force HTML5 Test" though:
- The new option activates Youtube Annotations. You can't turn those annotations off in your profile and you can't hide those annotations via this addon.
- Disabling SPF dosn't seem to work whit the new option.

I will probably add a new option to hide annotations completely in the next version. I haven't seen the SPF problem yet, but I will try to reproduce it, thanks!

Not working. W-10, FF ver. 40.0.2 Rated 1 out of 5 stars

Dell XPS-15 notebook, with all drivers updated. Tried defaultm, then a few options in this app. Tried stopping other extensions, rebooting, re-starting FF.
Gave up ...

Can you tell me, what exactly did not work? Forcing HTML5 instead of Flash of something else?

Rated 1 out of 5 stars

it doesn't appear to work well, and it slows down FireFox to a crawl.

Try this one (Smooth, working, one-click button):

What doesn't work for you? And I never had any complaints about the addon being resource hungry. If it is for you then that is clearly a bug which I would be happy to fix. Just contact me via email or open a bugreport on github.

Regarding YouTube Flash-HTML5: That one allows you to switch between Flash and HTML5, while my addon focuses on enforcing HTML5 (it had to be enabled with some nasty tricks when this addon was released originally, now this isn't such a big problem anymore). My addon also offers some nice improvements, like the enforcement of the theater-mode or a specific video quality.

Rated 5 out of 5 stars

Nice Addon but doesnt work proper for me anymore, since about 2 weeks the HTML5 Player shows no picture anymore only sound. I always have to click the HTML5 Icon to let the "force fallback solution" use the Flash player again to get picture. At the moment im thinking of deactivating this Addon.

This review is for a previous version of the add-on ( 

This is due to the new player design with floating controls. This problem is fixed in the latest version (3.0.0) of the addon. However it is not yet fully reviewed by mozilla, so unfortunately you have to install it by hand:

Just installed version beta 3.0.0 Rated 5 out of 5 stars

Works great.

Can I ask you to add one option?

The view. My Firefox keeps changing view to default and I've found no option to enforce "theater" view.

If You could add that to future release it would be great.



Edit. How do I reply to developer's comments? Anyway - yes - theater video size is already provided. Brilliant add-on. Definitely a keeper.

This review is for a previous version of the add-on (  This user has a previous review of this add-on.

This is actually already part of the addon: Just set the "YouTube player size" option in the addon settings to "Use theater mode". You may have to restart firefox.

Add option to hide the app's button on youtube pages Rated 4 out of 5 stars

Please allow the user to remove the icon/button on pages. Because once the addon is set up, there's no real need for it.
It's the only thing preventing me from using your app. Thank you.

This review is for a previous version of the add-on ( 

The new version (3.0.0) does have a much smaller button, which I think doesn't attract much attention. What do you think?

So long and thanks for all the fish Rated 5 out of 5 stars

I have enjoyed having this add-on installed in my browser because going to the html5 beta page to 'join' each time was frustrating. Now that html5 is on by default on Firefox whenever possible, I no longer need this.

This review is for a previous version of the add-on ( 

Disappointment Rated 1 out of 5 stars

Never installed Flash on this fresh Win7 installation. Thus was quite excited to think this might rid me of that nag. Unfortunately, no youtube videos play. (version Perhaps I have my browser too locked down for it to work. I'll have to continue my usual way of downloading each video to play in Media Player Classic.

Seconds later update: Just tried the development version 3.0.0alpha2 with no better success. I'm guessing that my NoScript has things too locked up.

This review is for a previous version of the add-on ( 

My addon does not provide it's own player, but uses the original youtube player. So you have to allow the scripts from youtube for it to work correctly. I cannot help you with this, because I don't use NoScript.
If you also use RequestPolicy, the MSE (needed for 1080p) will only work in the new fork of it (RequestPolicyContinued) and only if you manually allow the mediasource protocol.

If you want, you can write me an email or open a support ticket at github and I will try to help you with getting youtube to work without flash.

Rated 5 out of 5 stars

Couldn't get youtube to play properly (at all) in Firefox...downloaded this and it started working immediately! Thanks!!

This review is for a previous version of the add-on ( 

Rated 1 out of 5 stars

is not working

it shows 360p in the quality option

but is using the auto...

EDIT: >> im using signed <<

This review is for a previous version of the add-on (  This user has a previous review of this add-on.

Which version of the addon and firefox and which operating system are you using?
You can contact me via email if you want or alternatively open a issue at github.

Video's load so much faster ( instant play ) Rated 4 out of 5 stars


This review is for a previous version of the add-on (  This user has 2 previous reviews of this add-on.

YouTube changed their HTML5 player Rated 5 out of 5 stars

<s>Since YouTube changed their HTML5 player this addon causes the video to disappear after one second. YouTube has now a semi transparent context menu for HTML 5 videos and different buttons.

Please note that I have MSE disabled.</s>
Works with v3.

This review is for a previous version of the add-on (  This user has a previous review of this add-on.

This has been fixed in the latest version (3.0.0).

Please add a separate 'Start videos paused on playlists' function! Rated 5 out of 5 stars

I use this app for a while. It is simple, but really useful.
I just want to suggest one tmore function: please add a 'Start videos paused on playlists' checkbox to the options.

This review is for a previous version of the add-on ( 

Used to be a 5 star addon. Rated 2 out of 5 stars

Can no longer use this. Recently, in 720p mode the video frame blocks title, description and the "Add to", "Share" buttons. In 480p mode, the video frame is offset from where it should be. Hard to explain without visual aids. Does anyone else have these issues?
BTW, the alpha version seems to work fine.

This review is for a previous version of the add-on ( 

You are right, if you use the size changing options in the current stable version, the layout is a bit messed up. This is because youtube changed the layout code.
As you already noticed, this has been fixed in the latest development version (3.0.0 alpha2). I will try to publish a new stable version this weekend with the fix included.