I'm using Sony vegas 14 pro, build 270, and chroma keying does not work suddenly, it's worked in the past for me, but suddenly, it no longer works, I even looked up guides to see if I did something wrong, but I do it exactly as they show and it works for them.
@Whatpantz - Need more information from you.
If you don't mind me asking specifically what info you would need to best help me?
info like: Describe in full detail what happens when you apply the chroma key footage to an event. what media format you are working with, Whats the effect you are trying to achieve with what color you are trying to key out, and make sure that the "Split screen view" above the preview window is not enabled.
I got it figured out, all I had to do was turn off the Split screen view that I didn't notice was on
Figured as much, that's why i mentioned it in the above list....