I've tried several example videos, such as https://filesamples.com/formats/hevc. The videos are all encoded with HEVC @ 1920x1080. When I play them in the Unity VideoPlayer component, I get the error: Context: Setting media type for first video stream Error details: No suitable transform was found to encode or decode the content. Track types: Audio Track, type: %10%16 Video Track [1920 x 1088], type: HEVC Install HEVC Video Extensions to enable HEVC format support on compatible devices. https://www.microsoft.com/en-ca/p/hevc-video-extensions-from-device-manufacturer/9n4wgh0z6vhq https://www.microsoft.com/en-us/p/hevc-video-extensions/9nmzlz57r3t7 I noticed the videos would not play in Windows Media Player either. So I installed the extension on the first link and the K-Lite Codec pack. Now the videos do play in Windows Media Player, but I still see the same error in Unity. I tested with other h.264 videos at the same framerate/resolution and those play fine in Unity, so I've ruled lots of things out, it really seems like it's just the encoding that Unity doens't like. According to the documentation, Unity should support HEVC if the codecs are installed, which they are. I am using Unity version 2022.1.24f1.