Troublesome Sky Replacement

[Chris Wood]

Hi Ted, could I possibly have the settings you used for the Rotobrush? I’m having trouble getting a decent roto unfortunately.

Thanks.

[Chris Wright]

you should definitely read up on the rotobrush. It’s not intuitive per se.

https://help.adobe.com/en_US/aftereffects/cs/using/WS3bf812c123007fb8513559df126b537c840-8000.html

———–

as another random experiment, I layered 3 linear color keys on top of each other.
one RGB
one Hue
one Chroma

they worked together to key out the white without any roto. I also experimented with using timewarp to act like the rotobrush’s chatter reduce feature. It seemed to work well. And hey, who can argue with zero roto work right?

AE cs3 aep
https://www.mediafire.com/?6mzb25m2ndxku3i

[Tudor “ted” jelescu]

I did not see this till now- I’m away from my machine- I can post the project when I get back.

Tudor “Ted” Jelescu
Senior VFX Artist

[Chris Wood]

Yeah I did read that and found it quite helpful.

The trouble is that I’m getting a lot of boiling on the edge of the hills in the centre and on the right. My friend looked at the video and said that it looks like heat waves coming off the ground from a formula one race.

[Chris Wood]

Thanks, I look forward to getting this shot done! And then it’s the next shot 🙁 Haha.. What have I gotten myself into?

[Tudor “ted” jelescu]

Here’s the project file (CS 5.5)- replace with your footage and your sky plate.
4058_skyreplacetest01.aep.zip

Tudor “Ted” Jelescu
Senior VFX Artist

[Chris Wood]

Primo. Rest assured I will learn from it, and not just use it mindlessly.

Thank you!