Adobe Aftereffects lesson

Today in lesson, we learnt how to put effects onto green screen.
I worked with Aaron as he did not have a computer.

To start with we got to the image we wanted to start with:

In this shot we had green screened the mirror as we wanted to add a different version of the character in its place.

To start with we had to go onto 'keying' presets and choose 'linear color key' and add it to the clip

We then had to choose the the key color by using the dripper to match the color to the green screen. We then adjusted the 'match tolerance' and 'matching softness' and changed the 'match colors' to "using chroma". This is the result:

After that we added 'Spill suppressor' from the 'Keying' presets.
Then changed the 'Color to suppress' to green.

This didn't do a big amount, but it did change the color of some of the flowers on the wall.








To then soften the edges of we added a 'Matte choker' from the 'Matte' presets


After this we added the clip we wanted in the mirror underneath the first in the 'comp' window as a new layer.

We then played around with the size and placement to make it look realistic.

We filmed the second clip on green screen. We did this so we could add fire to the background.
So we repeated the above steps.

The final result looked like this.










Last came the ripple effect on the mirror. this was a simple preset called 'Ripple' then the radios was increased.

I am very confident now that i will be able to use the green screen effect in future projects.







some of the problems we encountered today were:

• Shadows - The first clip was filmed in very low lighting, which to start with makes it hard to see what's going on in the clip, but did actually cast shadows of the actresses arm over the green screened mirror when raised. which can be seen in the last image. this caused continuity problems mainly as the shadow would not be visible on a mirror. From this i have learnt that when using green screen, it is best to do it in full lighting so no shadows are cast.
• Editing - It would probably be best to edit the clips you wanted to use in final cut first, so you could get them in time and cut down to the size needed, then import them directly into After effects, do the effects, then import it directly back into final cut. this saves time in the long run as you would not need to keep exporting and re-importing clips which could ultimately lead into loss of quality and clips taking up a lot of storage space. 

Oh and the last problem we encountered was that our editing screen randomly turned blue and we couldn't figure out why, cmd + z did nothing: