No html5 function on websites (e.g. Youtube etc...)

dunkel10's Avatar


04 Nov, 2018 06:01 PM

hello, at new version of TFF (10) no html5 works. Why? Is there a codec problem? Or it is a problem with the websites (blocking old browsers etc...)?

thanks and greetings dunkel10

  1. Support Staff 1 Posted by Chris (chtrusch... on 04 Nov, 2018 08:55 PM

    Chris (chtrusch)'s Avatar

    Do you mean HTML5 video, or *all* HTML features?

  2. 2 Posted by dunkel10 on 07 Nov, 2018 06:09 PM

    dunkel10's Avatar

    hello chris,

    thanks for feedback - it's the problem with HTML5-Videos. And the Codecs at all. It also affects qte - nothing seems working! It does not matter if I switch something. Sorry, i've tried so much - "NoScript or AdBlock"-trials, Script trials, cookies and so son. Youtube doesn't respond at all and therefore does not play the most videos.
    Sorry! d10

  3. Support Staff 3 Posted by Chris (chtrusch... on 07 Nov, 2018 06:21 PM

    Chris (chtrusch)'s Avatar

    Please go to Preferences>TenFourFox and check if MSE is enabled. It should be if you're running the latest version of the browser, but if it isn't you won't be able to play YouTube videos.

  4. 4 Posted by Vid on 08 Nov, 2018 06:24 PM

    Vid's Avatar

    And remember, d10, as in another thread, that y2mate rips excellent videos from YouTube quite quickly, so you can watch 90+% of YouTube vids that way.

  5. 5 Posted by dunkel10 on 10 Nov, 2018 08:48 AM

    dunkel10's Avatar

    Sorry MSE has no affect, no solution. After many tests - no sufficient result, d10

  6. 6 Posted by dunkel10 on 10 Nov, 2018 08:51 AM

    dunkel10's Avatar

    Hello Avatar, this is the only respond - a screenshot below, every every attempt fails, thanks for all - i take a pc - d10

  7. Support Staff 7 Posted by Chris (chtrusch... on 10 Nov, 2018 09:30 AM

    Chris (chtrusch)'s Avatar

    Can you try this video which definitely works in a standard installation of TFF FPR10 with MSE enabled?

    If it doesn't, something is wrong with your browser profile and we'll get it fixed.

  8. 8 Posted by dunkel10 on 11 Nov, 2018 11:46 AM

    dunkel10's Avatar

    Hello Avatar,

    thanks for the test video (funny) - it works again, don't know why. It's a strange behaviour. The profile is 'standard' at the time. MSE is enable. Thank you so much. But it is not happy and meaningful circumstance, sometimes it works, sometimes doesn't. The engine in TFF FPR10 isn't smart - PPC (1,5 GHZ/G4) jerking and twitching when videos are to be played. And slow....Uhhhrrgg...
    It's not a pleasure. But...thanks so on and - I stay tuned.

    By the way: How about the "Add-ON"-Scenery? Is NoScript (after, CookieController, QTE, etc.- available in an newer version? - or is this the end for TFF? Its the classic-design version. Have you any suggestions or ideas? There is a standstill / stagnation - it seems ;-(
    Thanks so much - all the time and for the support - i wish you the best - d10

  9. Support Staff 9 Posted by Chris (chtrusch... on 11 Nov, 2018 01:32 PM

    Chris (chtrusch)'s Avatar

    Do you have URLs of some of the videos that don't work for you? Maybe we can find out what they have in common and what can be done about it. For video performance please see the FAQ:
    For add-ons see here:

  10. 10 Posted by dunkel10 on 14 Nov, 2018 06:36 PM

    dunkel10's Avatar

    hello, thanks for it all - but Add-Ons aren't find....sorry, other Links?


    thanks d10

  11. 11 Posted by allenbundy100 on 18 Nov, 2018 05:18 AM

    allenbundy100's Avatar

    Earlier last summer YouTube videos stopped playing when using TenFourFox. I just went into TenFourFox preferences, selected the TenFourFox preference menu at teh bottom left, and then under MediaSource I selected: "Enable MSE/media quality options (slower, if available)". It solved my problem and I can now view YouTube videos on TenFourFox. Thanks for the info!

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