I have a Windows 11 Pro 24H2 26100.3775 computer. My CPU is an Intel Ultra9 285k and my graphics card is an NVIDIA RTX 5080 with the driver version being Studio 572.83. All of these are up to date.
However, I was surprised to find that Premiere Pro v25.1 and later versions cannot utilize the NVIDIA or Intel graphics cards for hardware-accelerated decoding. The video format is HEVC 4K 60fps 10-bit 4:2:0. When previewing videos in this format, the task manager shows that the graphics card's decoding chip is not working properly, the CPU usage is extremely high, and the export time is very long. The materials are stored on a local SSD and the software is set to enable hardware-accelerated decoding. Under the same conditions, DaVinci Resolve and KineMaster can both use the graphics card to accelerate the decoding of this format video, but Premiere Pro cannot.
At first, I suspected that there was a problem with my computer, so I tried four different computers and also installed various versions of the Studio driver, but the issue persisted. It has been confirmed that the problem lies with Premiere Pro itself. I hope Adobe engineers can verify this issue. This problem was raised as early as December 2024, but it still hasn't been resolved in version v25.3.