I downloaded the Youtube Flash Video Player and was still getting that error message, "Your browser does not currently recognize any of the video formats available". Just read to go to Add-ons (type "about:addons" in your web browser address bar.) The choose "Extensions", from the left side menu. On the Youtube Flash Video Player, check options and change that to HTML5. Finally!! All Youtube videos play in my SeaMonkey (Mozilla) browser. Wish somebody had told me about that option choice and fix!

While YTFVP is catching up with the latest YouTube Flash blocking in Firefox, if what one wants is working video card hardware enhancements such as sharpening and dynamic contrast to work on YouTube as they were in Firefox, then:

I find that they work in Internet Explorer 11 in Win 7! It's playing in HTML 5, I think.

So, I don't know if they will work in Edge or whatever.

I'll be glad when YTFVP catches up again.

YouTube can be so amazingly blurry and flat all by itself. I hadn't seen it that way for awhile.

EDIT: IE is using mp4/AVC instead of the Google VP8 or 9 or whatever that is, that can't be sharpened in Win 7 browsers or by most video cards.

Thanks so much, works like a charm!

Good

Baik

I totally agree with Des and RAJ, I use this great add-on with two computers (a desktop and a netbook) with Windows XP and a legacy version of Firefox on them. It worked fine until Google changed something in Yotube code once more. I hope you will update it as soon as it's possible, thanks !

Damn! I hate when they force me to use something. (youtube html5) I hope this will be fixed soon. I noticed it still works in embed mode. (still using xp, and an older firefox version. )

Anonymous user 3367bd wrote:

"It does nothing. There is zero improvement."

It was working up until about 3 days ago, when it stopped again. That's because Google/YouTube seem to be maniacally bent on not allowing people with older computers or older operating systems (e.g. Windows XP) to access their video services.

I've been using 4 versions of this plugin (since v50.0) on my older computer for at least a year.

YouTube claims that you must upgrade to a newer browser or newer operating system to be able to watch videos. Yet it's perfectly and completely possible for older computers and operating systems to play YT videos just fine. This plugin proves it. But a few days ago, YT altered their code yet AGAIN to make it not work.

My guess, and it's only a guess, is that like countless other corporations and online entities, they want to force people, if they can, into upgrading to newer hardware and/or software. As to they reasons why they do this, well I'll let you speculate on that.

The, excellent, BBC iPlayer is still Flash-based, mate.

If it's still good enough for the world's largest broadcaster, I'm not sure why a tuppence ha'penny outfit such as YouTube has such a problem with it.

Oh, well *sighs*. I always found YT to be a fourth-rate waste of my time anyway.

I am using firefox 33.0.3 on XP. I can't use it since yesterday. This is a very good addon and this is the only one that works for me to make flash player available on youtube. Hoping update and thank you so very much.

Плагин перестал корректно работать на FireFox ESR 52.1.1.
При открытии видео, - звук дублируется, подозреваю, что плагин не останавливает HTML5 проигрыватель, т.е. пользователю отображается Flash проигрыватель со звуком, и, в фоновом режиме идет просмотр видео в HTML5 проигрывателе (который не отображается, но звук от которого слышен в не синхронном режиме со звуком от Flash проигрывателя)