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Can't play twitter movies

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larbalette
larbalette
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duplicate of https://support.mozilla.org/en-US/questions/1095324 - locking


Firefox can't play twitter's incorporated movies like this one : https://twitter.com/BeaujolaisNvx/status/664015437680607232 when it still can play Vines movies like this one https://vine.co/v/eUXxn20mKZW

I have setup a full brand new "home" directory for Firefox in yj6ghq8j.default : no change. I have started in Safe Mode : no change. I have double checked by dis-activating all modules & plugins. No change. I've tried to fiddle with the about:config trick I've seen here and there : No change, because impossible to find the entry key "blabla-media-foundation-blabla" I've tried to de-activate the hardware acceleration with Flash : no change.

Finally, I'm stucked. Java is up to date. Flash is using version 11.2.202.548 Video codec OpenH264 is installed by Cisco Firefox version, under my Linux Gentoo box, is 38.4.0 Linux gentoo kernel is running a version 3.18.9 : hardware drivers (graphic card included) are hard-compiled.

Any help would be greatly appreciated ! Thanks, Larbalette

''duplicate of https://support.mozilla.org/en-US/questions/1095324 - locking'' Firefox can't play twitter's incorporated movies like this one : https://twitter.com/BeaujolaisNvx/status/664015437680607232 when it still can play Vines movies like this one https://vine.co/v/eUXxn20mKZW I have setup a full brand new "home" directory for Firefox in yj6ghq8j.default : no change. I have started in Safe Mode : no change. I have double checked by dis-activating all modules & plugins. No change. I've tried to fiddle with the about:config trick I've seen here and there : No change, because impossible to find the entry key "blabla-media-foundation-blabla" I've tried to de-activate the hardware acceleration with Flash : no change. Finally, I'm stucked. Java is up to date. Flash is using version 11.2.202.548 Video codec OpenH264 is installed by Cisco Firefox version, under my Linux Gentoo box, is 38.4.0 Linux gentoo kernel is running a version 3.18.9 : hardware drivers (graphic card included) are hard-compiled. Any help would be greatly appreciated ! Thanks, Larbalette
Attached screenshots

Modified by the-edmeister