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Unable to play udemy.com videos

  • 1 përgjigje
  • 0 e kanë hasur këtë problem
  • 72 parje
  • Përgjigjja më e re nga Denys
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David Joyce
David Joyce

Hello

I'm facing a frustrating problem. I asked an AI the following:

Firefox Developer Edition (v145.0.2) on Windows 11 host machine can play udemy.com videos but Firefox Developer Edition (v146.0b9) on Windows hyper-v virtual machine cannot.

I suspect the cause is due to either settings or the virtualisation Hyper-V. Other browsers (Edge, Brave) on the virtual machine can play udemy.com videos with no problems.

Gemini said: This is likely caused by a specific change introduced in Firefox Nightly/Beta (v146) regarding how it handles video decoding on Windows.

The Short Answer: Firefox v146 enabled FFmpeg-based hardware video decoding by default on Windows (previously it relied almost exclusively on Windows Media Foundation). This experimental feature often conflicts with the virtualized graphics drivers (Hyper-V Video) used in your VM, causing the player to fail (black screen or error) while audio might still work or the player simply refuses to load.

Is this true?

Hello I'm facing a frustrating problem. I asked an AI the following: Firefox Developer Edition (v145.0.2) on Windows 11 host machine can play udemy.com videos but Firefox Developer Edition (v146.0b9) on Windows hyper-v virtual machine cannot. I suspect the cause is due to either settings or the virtualisation Hyper-V. Other browsers (Edge, Brave) on the virtual machine can play udemy.com videos with no problems. Gemini said: This is likely caused by a specific change introduced in Firefox Nightly/Beta (v146) regarding how it handles video decoding on Windows. The Short Answer: Firefox v146 enabled FFmpeg-based hardware video decoding by default on Windows (previously it relied almost exclusively on Windows Media Foundation). This experimental feature often conflicts with the virtualized graphics drivers (Hyper-V Video) used in your VM, causing the player to fail (black screen or error) while audio might still work or the player simply refuses to load. -------------------------- Is this true?

Krejt Përgjigjet (1)

Denys
Denys
  • Moderator
  • Top 10 Contributor

Hi David,

Thank you for reaching out! I believe Matrix would be a better place for this question. Another option is filing a bug on Bugzilla.

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