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Toś ta nitka jo se archiwěrowała. Pšosym stajśo nowe pšašanje, joli trjebaśo pomoc.

Why can FF not play "H.264" and "MSE & H.264" videos like Crome do?

  • 4 wótegrona
  • 1 ma toś ten problem
  • 17 naglědow
  • Slědne wótegrono wót James

HL1234
HL1234
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Win8 + FF 59.0.2 (x64) I can play HTML5-Videos I can play Non-HTML5-Videos But I can not play "H.264" and "MSE & H.264" videos with FireFox. When I'm downloading the MP4 Video (i.e.) I can play it within Windows with the media player. I.e. this videos does not play: https://channel9.msdn.com/Shows/Azure-Friday/Get-started-with-Azure-for-NET-developers https://channel9.msdn.com/Shows/Azure-Friday/Deploy-Bitnami-Nodejs-HA-Cluster-with-Azure-Cosmos-DB You can check this also on the youtube site: https://www.youtube.com/html5

With Google Chrome its possible to play all videos but I would like to further use FF. When will come a repair for that - thank you.

Win8 + FF 59.0.2 (x64) I can play HTML5-Videos I can play Non-HTML5-Videos But I can not play "H.264" and "MSE & H.264" videos with FireFox. When I'm downloading the MP4 Video (i.e.) I can play it within Windows with the media player. I.e. this videos does not play: https://channel9.msdn.com/Shows/Azure-Friday/Get-started-with-Azure-for-NET-developers https://channel9.msdn.com/Shows/Azure-Friday/Deploy-Bitnami-Nodejs-HA-Cluster-with-Azure-Cosmos-DB You can check this also on the youtube site: https://www.youtube.com/html5 With Google Chrome its possible to play all videos but I would like to further use FF. When will come a repair for that - thank you.

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Toś to wótegrono w konteksće cytaś 👍 2

Wšykne wótegrona (4)

Shadow110
Shadow110
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Hi, it looks like you have too many extensions that can break the page such as Privacy Badger, uBlock Origin and a few more. I have no problem playing those videos in Private Browsing. with uBlock, Ghostery on.

Are you accepting the required cookies in Options --> Privacy & Security ??

Lets try this please : SAFE MODE

In Firefox Safe mode these changes are effective:

  • all extensions are disabled (about:addons)
  • default theme is used (no persona)
  • userChrome.css and userContent.css are ignored (chrome folder)
  • default toolbar layout is used (file: localstore-safe.rdf)
  • Javascript JIT compilers are disabled (prefs: javascript.options.*jit)
  • hardware acceleration is disabled (Options > Advanced > General)
  • plugins are not affected
  • preferences are not affected

TEST''''is issue still there ?

If the issue is not there then it is your Extensions as mentioned. If the issue is still there : VIDEO AUDIO

Please let us know if this solved your issue or if need further assistance.

cor-el
cor-el
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  • Top 10 Contributor
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HL1234
HL1234 Pšašaŕ
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I found out that I does not have this Problems on Windows 7. It is a Windows 8 Notebook where the new FF isn't working, for videos I told above. So, may be its OS dependent but on the other hand Chrom works with this videos on the same Win8 Notebook and also in Chrom I installed µBlock, Privacy Backer, etc... But, excuse me, it seems it isn't a Firefox problem.

James
James
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  • Moderator
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If you have a N or KN edition of Windows then you may be missing the media feature packs (as mentioned in https://support.mozilla.org/en-US/kb/fix-video-audio-problems-firefox-windows ) as it provides codecs needed for to fully support the HTML5 players like the one at Youtube https://www.youtube.com/html5/