I started using VEGAS Pro 23 today and I'm running into an issue with AV1 videos recorded via Bandicam. I’m on Build 302, using an NVIDIA RTX 5090, and I’ve already tried both the latest Studio and Game Ready drivers.
The preview window just stays black while the audio plays back normally. Cross-testing with standard MP4 files worked perfectly. The videos are recorded at 1080p. My GPU is correctly recognized by VEGAS, and the Microsoft AV1 Video Extension is installed.
Does anyone have any ideas on what else I could try?