Wizard wrote:Make sure it is track one or I believe it only has to be under the video you are green screening
Yeah, the background that you want behind your keyed-out actors can be on any track underneath the actors' green-screen footage, as long as nothing else gets in the way. It's the same concept as layers in graphics programs like Photoshop or GIMP.
By way of example, you can put the background footage on track 3 and the green-screen footage on track 10. When you key out the green on track 10, it will reveal all the tracks underneath -- which in this case, would only be the footage on track 3. But if you inserted some footage on track 7 (or any other track in between 3 and 10), then that new footage on track 7 would end up blocking what is on track 3, unless you then did some keying or masking/garbage mattes on track 7.