Hello @Jennie ,
Based on the Microsoft documentation I was able to find, Windows Media Player and the Windows media stack document support for codecs referenced in Microsoft’s file types supported by Windows Media Player documentation. However, I could not find any official Microsoft documentation confirming native H.266/VVC (vvc1) playback support in Windows Media Player or the default Windows 11 media experience.
Because of that, I can’t confirm that H.266/VVC is supported natively in the built-in app, and the behavior you’re seeing appears consistent with a codec support limitation in the Windows media stack rather than a hardware issue.
As a result, there seems to be no official Microsoft roadmap or timeline for VVC support, any documented Microsoft recommendation for hardware-accelerated VVC playback on the current operating system, or any information about manually enabling this capability.
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Thank you.