Is green screen compatible with sony vegas Pro 9?

Sony Vegas Pro 10e PROBLEMS!! Black screen!?

• OK so usually, when I try to render a video, it will finish the render but when I play it, some parts of the video have been replaced with just a black screen. The audio is still there but the video is just pure black. 2.5 TB free HD space 8GB RAM Intel i5 proccessor thing Sony Vegas Pro 10 (Version 10e) Build 738, 64-bit This happens with most videos I try to render. Some time, each render has a different black part, but mostly it's always the same part that goes black. No matter how many times I re-render or re-input the video file, it will still happen. (I render into .wmv if that helps) Please help, my YouTube channel depends on it!

• Answer:

  try changing the rendering settings got to options > preferences then click on video and change the dynamic RAM preview max to 0 then change the maximum number of rendering threads to 1 this should make it render faster and fix your problem