Green screen can be tricky... first, the screen has to be evenly lit. Then, if you're shooting in 4:2:0 YUV color compression, that can cause problems with certain types of green screen shots, but only the more pro-level cameras can shoot above that. You may try other green screen methods as well, if you are unable to get a satisfying key out of the one built into VEGAS. VEGAS Effects (included with the VEGAS Post suite) has a nice chroma keyer in it, and VEGAS Pro 19 (not the VEGAS Pro Edit version) also comes with Boris FX Primatte studio, which is excellent chroma keying software.
In the mean time, keep messing with those settings, and also try adjusting the color, brightness, and contrast settings of the video you are feeding into the chroma key effect (all done before it in the plugin chain).
Further, if there are any areas of the green screen footage that you can mask out before knocking out the green, the tool will have that much less area to deal with and you might get better results. For instance, If the boy in the frame never encroaches upon the right edge where your two upper arrows are pointing, use the Crop FX to knock out the right side of your green screen image so that you then have to process only what's actually behind him.
Please do report back if there are differences in the exact same settings between VEGAS 18 and 19, as there should not be and that will be of value to the development team to know if there are differences anyway. If this does turn out to be the case, please take a screenshot of the settings used in both versions for us, if you can, so we can try to replicate it on other systems.
Further, if there are any areas of the green screen footage that you can mask out before knocking out the green, the tool will have that much less area to deal with and you might get better results. For instance, If the boy in the frame never encroaches upon the right edge where your two upper arrows are pointing, use the Crop FX to knock out the right side of your green screen image so that you then have to process only what's actually behind him.
But why the extra step? Vegas Pro and older have no problems, yours will work but its a step that should not be in there, the other project I did required Alpha channel no green screen
And what are those settings, so we can try to replicate the bug on our end? If you could upload the clip giving you the problem, that would be even more helpful.
Then please refer to the first sentence of @fr0sty.
And what are those settings, so we can try to replicate the bug on our end?
Don't let yourself be asked like that - are you interested in a solution, or not?
Former user
wrote on 9/19/2021, 7:50 AM
This is just a wild guess, but I see a hard line rectangle where your arrow is pointing out errors. Is there a chance you have SPLIT SCREEN effx preview enabled?