Dynamic mask from clouds - green screen death star behind timelapse clouds

kevinbuckley70

Newbie Joined: Oct 15, 2015 03:39 Messages: 8 Offline

Solved by

Jul 10, 2020 20:58

I have a timelapse video of a huge wide landscape with rolling clouds. I also have a green screen clip of the Star Wars death star which I want to slowly creep across the screen. But it needs to be in front of the 'sky' (there is some blue sky visible behind the clouds) but behind the clouds. I assume I need to turn the moving clouds into a mask but I can't figure out the best way to do that. Any ideas?

This message was edited 1 time. Last update was at Jul 11. 2020 03:50

Carl312

Senior Contributor Location: Texas, USA Joined: Mar 16, 2010 20:11 Messages: 9090 Offline

Jul 11, 2020 08:25

Put the Star Wars clip on a higher number track will make it appear in front of whatever Is in lower numbered tracks.

If the star wars clip has transparency, parts of the lower numbers tracks will show through.
You can use Chroma key to make the Green screen transparent.

.

This message was edited 1 time. Last update was at Jul 11. 2020 08:32

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kevinbuckley70

Newbie Joined: Oct 15, 2015 03:39 Messages: 8 Offline

Jul 11, 2020 08:39

Quote Put the Star Wars clip on a higher number track will make it appear in front of whatever Is in lower numbered tracks.

If the star wars clip has transparency, parts of the lower numbers tracks will show through.
You can use Chroma key to make the Green screen transparent.

.

Yes but it needs to be BEHIND the clouds

BarryTheCrab

Senior Contributor Location: USA Joined: Nov 06, 2008 22:18 Messages: 6240 Offline

Jul 11, 2020 08:48

Cam you "fake" it by adding your own clouds? There are lots of cloud clips to steal from the web, and very realistic. You may have some luck with FX clouds, too. HP Envy Phoenix/4thGen i7-4770(4@3.4GHz~turbo>3.9)
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Maliek

Senior Contributor Location: San Antonio, Texas USA Joined: Nov 10, 2012 12:01 Messages: 851 Offline

Jul 11, 2020 09:03

Quote I have a timelapse video of a huge wide landscape with rolling clouds. I also have a green screen clip of the Star Wars death star which I want to slowly creep across the screen. But it needs to be in front of the 'sky' (there is some blue sky visible behind the clouds) but behind the clouds. I assume I need to turn the moving clouds into a mask but I can't figure out the best way to do that. Any ideas?

If you have ColorDirector or DirectorSuite (which includes ColorDIrector) you can try using the Motion Mask feature to remove the clouds. You can then place the original clip on the lower number track, the Death Star on the next numbered track, and the clouds on the highest numbered track.

If you do not have ColorDirector Barry has already provided you with the best solution.

This message was edited 1 time. Last update was at Jul 11. 2020 09:04

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kevinbuckley70

Newbie Joined: Oct 15, 2015 03:39 Messages: 8 Offline

Jul 11, 2020 09:06

Quote

If you have ColorDirector or DirectorSuite (which includes ColorDIrector) you can try using the Motion Mask feature to remove the clouds. You can then place the original clip on the lower number track, the Death Star on the next numbered track, and the clouds on the highest numbered track.

If you do not have ColorDirector Barry has already provided you with the best solution.

Yes I have color director. That's probably the way I'll go. Similar to rotobrush in aftereffects. Thanks for all your suggestions.