Hello, I am experiencing an issue with HEVC hardware decoding in Firefox on Windows 10. System information: OS: Windows 10 (latest updates installed) Browser: Firefox ESR 128.8 GPU: (your GPU model) GPU driver version: (your driver version) Problem: In about:support under the "Media" section, I see that HEVC (H.265) hardware decoding is not supported, while on Windows 11 with the same hardware, it works correctly. What I have tried: Installed HEVC Video Extensions from the official Microsoft website. Enabled hardware decoding in about:config: media.hardware-video-decoding.enabled → true media.wmf.hevc.enabled → true Updated GPU drivers to the latest version. Checked HEVC support via FFmpeg – decoders are available. Expected result: Firefox should use HEVC hardware decoding on Windows 10, just like it does on Windows 11. Actual result: HEVC is only supported in software mode, and hardware decoding is not working. Could you please help me resolve this issue? Thank you!