I am using Vegas Pro 11 and 13. I add videos to a timeline but after a while an added video will get a black screen but the audio is still there. I have tried numerous of things without a complete a solution that holds over time (Preferences/Video/GPU processing = Off, OpenCL memory Size Filter = 4000). The mp4 videos come from an iphone 13Pro and an iphone 14 and I even have mp4 videos from a GoPro Hero 5 Black.
I was thinking that if I can manage to get a few videos together that work ie no black screen then perhaps I could render those to one video, do some more like that and then add these renderings to a new timeline and finally render them all together. The final result is supposed to be a render that I can add to DVD Architect and finally burn a Blu-Ray.
As long as my thoughts are feasible what settings should I have for all of these renderings? Usually I would have the render to 1080-50i (1920x1080) 25 Mbps.
Are there any better suggestions how to solve my problem with black screens?
My setup: Win10, AMD Ryzen 5 3600 6-core processor, Nvidia GeForce GTX 1050 Ti, 15 GB RAM