I filmed with 2 cameras. The problem is that after I dragged footage in Vegas, sometimes I see the preview, sometimes it's a black screen. I went to preferences Dynamic RAM preview to 0, GPU acceleration Off... nothing, still black screen on some frames. Both Canon EOS R cameras shot at 50 fps.

I opened another Vegas file and dragged only one video from one camera. Same black screen.

Please help me, because I saw that this problem does not exist in Premiere Pro, but I don't seem to want to give up on Vegas.

thanks