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Firefox video stream problems in youtube and twich unsupported MP4/H.264 while having installed media feature pack

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hello_there
hello_there
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So I have a following problem

FF 124.0.1 Windows 10 N edition Installed media feature pack

When trying to play twitch video it shows error 4000 and when trying to play stream from youtube it shows that your browser can't play this video.

Problem is that FF was able to do it like 6 moths-year ago (not really watching stream videos)

was trying to reinstal media feature pack, firefox, chcecknig nighgtly build but without sucess and have no clue what can do more

So I have a following problem FF 124.0.1 Windows 10 N edition Installed media feature pack When trying to play twitch video it shows error 4000 and when trying to play stream from youtube it shows that your browser can't play this video. Problem is that FF was able to do it like 6 moths-year ago (not really watching stream videos) was trying to reinstal media feature pack, firefox, chcecknig nighgtly build but without sucess and have no clue what can do more

Keazen oplossing

Ok I manage to solve it sfc show two corrupted dll files What I did in the end was as follow:

sfc /scannow DISM /Online /Cleanup-image /StartComponentCleanup DISM /Online /Cleanup-image /RestoreHealth reboot sfc /scannow uninstalled media feature pack reboot sfc /scannow reboot sfc /scannow installed media feature pack reboot

and it works

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jonzn4SUSE
jonzn4SUSE
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Laptop, Desktop, or DIY? If not DIY, what make and model? What graphics card and driver version? Did you ever check in Windows update under the optional update section?

jonzn4SUSE
jonzn4SUSE
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Have you tried Firefox in Troubleshoot Mode?

hello_there
hello_there Fraacheigener
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Desktop, DIY

GPU RX6400 driver version [23.20.17.03-231016a-398307C-AIB] AMD driver version for windows [31.0.22017.3004]

Windows 10 professiona N 64 bit 22H2

I have tired Firefox in troubleshoot mode I have checked update under optional updates, there is none and everything is up to date

cor-el
cor-el
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You can check the codec support in the "Help -> More Troubleshooting Information" (about:support) page, you may have to play a video to initialize this section.

hello_there
hello_there Fraacheigener
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Under HEVC and AAC I have "not supported" on both sides

H264 is "supported" on both sides

zeroknight
zeroknight
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Does youtube work with the h264ify extension installed?

Try installing or updating the "VP9 Video Extensions" and "AV1 Video Extension" from the Microsoft Store then reboot.

Try running the System File Checker tool: 

sfc /scannow
hello_there
hello_there Fraacheigener
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Keazen oplossing

Ok I manage to solve it sfc show two corrupted dll files What I did in the end was as follow:

sfc /scannow DISM /Online /Cleanup-image /StartComponentCleanup DISM /Online /Cleanup-image /RestoreHealth reboot sfc /scannow uninstalled media feature pack reboot sfc /scannow reboot sfc /scannow installed media feature pack reboot

and it works

Bewurke troch hello_there op