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?