Hello dear friends!!
I would like to ask a quick question about masks.
I have a moving backround and I want to place an explossion alpha clip somewhere in this background video. But I want the explossion clip to stay there during the whole time, although the background clip is moving. How can I do this? Do I have to track motion the background clip?I think there is a possibility that I can stop the mask by moving without using track motion.
Your suggestions will be most valuable for me, as you are....
I'm not sure what you're asking, sorry, but here's some suggestions.
If you have some footage that is shot with a moving camera, and you want to attach another element (like an explosion) to the movement within your footage, then yes, you will need to use Motion Tracking.
If the background is moving because you have animated it within AE, you can parent the explosion layer to the background layer.
I did the motion tracking and I also did the parenting because I had some animated footage too, as you stated, and the result is fine.
Thank you for the usefull tip!!