I am testing out the motion live plug in with the live face app for iphone X, but for some reason the expression mapping panel seems useless? When I open it i can adjust my characters face, allowing him a wholesome smile. As soon as I click preview or record however he goes back to having a mean old not smiley face. Trying to smile makes him look both evil and messed up. I am including a video so people can see. Any idea whats up?

https://www.youtube.com/watch?v=h917JaoRRc8

The expression mapping is for when you actually smile, how much of an effect it will have.

I think what you want to do is set a default for your character that is more smiley as he looks kind of glum.

It would be best to do that in CC with a morph to make it permanent, but you can also set a Face Key before you start recording:

76% of original size (was 664x19) - Click to enlarge

You can even use the same method to adjust any recordings you have already made.

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76% of original size (was 664x19) - Click to enlarge

thank you so much, that makes so much sense and it allows for some really beautiful expressions by setting it to frown but then smiling, gives him a bit of a sad smile, and vice versa. love it. thanks.