Final Cut Pro X in Under 5 Minutes: Improving a Key with Grading

[Music] so we've just released a brand new tutorial called keying and compositing in Final Cut Pro 10 where we teach you how to pull really great keys and create great composite images one of the questions we tackle in that tutorial that I want to discuss here in today's under 5 is can grading improve your ability to pull a good key so we have the shot of Travis in a car and it's a fairly difficult shot to key for several reasons first the subject has a lot of fine hair detail on his beard second the lighting on the green-screen is rather uneven we see some lighting here that's very different than sliding back here third there creases in the green scheme of shadows that will create a more difficult key fourth this scene was shot on an iPhone with a very small sensor and a compressed codec and finally if we look at the vectorscope we can see that this green on the green screen actually isn't pure green it's a combination of green and blue there's enough blue in it that is pushing it towards cyan as we can tell right here by the traces what this means is final cut when it attempts to key out the Green will also be hanging out blue which could affect other Blues in the shot let's take a look I'll apply the keyer I'll go to the matte view and sure enough in addition to the spill we see on his arm from the reflections off the green screen and the crease issues and the transparency issues due to the spill up on the roof we have part of his jeans being keyed out because there's blue in the blue jeans so fairly complicated key so can greeting help us get to a better starting point let's check it out I'll disable this copy and we'll work on the same clip below but before we try to key it let's add a color correction command 6 and what kind of coloration should we use well I don't want to affect our subject at all I want to be able to change the color of the green without affecting anything in the image that we want to remain well Final Cut Pro 10.4 has a perfect tool for that I'll select the hue/saturation curves correction I'll use the hue versus hue curve and I'll sample the green screen then I'll use the vectorscope as a guide as I push that green more towards pure green now that the trace is facing the green target I know there's no blue or red in that green it's pretty much pure green while I'm here I'll sample hue versus saturation and I'll bump up the saturation a little bit the more saturated the green the more pure the green and the better it should key with that correction in place let's add the keyer effect I'll go back to the video inspector and go to the map view and sure enough all of that partial transparency and his blue jeans has been removed because the keyer is now focused on pure green instead of mixing in blue we still have several other issues to tackle in this key which is beyond the scope of this under five but we've answered the question grading a shot before king can help you pull a better key [Music] you

Channel: Ripple Training

Views: 32,091

Keywords: Final Cut Pro X, FCPX, FCP X, Apple, Video, Ripple Training, In Under 5 Minutes, FCP 10.4, Keying, Composite, Key, Compositing, Green, Screen, Greenscreen, Green Screen, Grading, Color Grading, Color, Color Correction

Id: mhtwIg_W4Lg

Length: 3min 13sec (193 seconds)

Published: Tue Mar 27 2018