How do I pull of this effect the best way?

T

Tass

Active member
Hi folks!

I am sitting here and planning for a music video that we're going to shoot in a couple of weeks.

We're going to have an effect where bands t-shirt have their bands signature colors while everything else is black and white. Ok, fine, but then I found out a bit more about the colors. It's purple, pink, and "baby blue". First plan was to simply do a color pass in premiere, but something tells me that it might give me problems since these colors can also be found in the skin tones...

So my next plan is to simply let them have green t shirts and then change it to the colors they wish to have.

What do you think, what's the best way to do this in order to make it as good as possible? A part of the video is supposed to be in color, and a part black and white with the color pass thing going.

Any help is welcome!
 
The second way would probably be best...maybe one vibrant blue shirt as well as the green ones if there aren't any tints in the scene similar to that, so it's easier to deal with crossover between them.

Personally I don't really do time-consuming effects like this in music videos...makes more sense to just do a really nice lighting setup, plenty of camera movement that matches the vibe of the song, and then edit the sh!t out of it.
 
Thanks for your input Justin!

Yea I also feel that this part of the video might be very time consuming... Not to mention while one of the members is in focus and the effect is applied, another member that stands behind him and is out of focus also needs to have his type of color on the shirt applied at the same time (there are three members, and every member has one of the colors).
Maybe it's just best to let them have shirts with the right colors on, and try to do a color pass in post as good as possible, if it dosen't work we simply skip that part and make it totaly black and white or something like that...

I cinda feel that I don't want to risk the entire project by letting them wear green shirts and ruin the parts that's supposed to be in color too... I have never done anything like this so I'm a bit nervous =)
 
Crazy thought: body paint. Reduce problem colours on set (love sonofaresii's idea), get rid of normal skin tones with body paint, drop a "leave color" effect or similar onto the clips, and pray that you don't have to spend weeks doing garbage mattes...

There's another thing I'd try to play with... It's fiddly, and I don't properly remember how I did it, so bear with me. Basically, I was shooting a scene where there was a guy dressed only in red underpants, and I wanted to brighten the underpants (to add to comedy of scene) without affecting the skintones. What I ended up doing was something like:

Layer 1: normal shot
Layer 2: on top of layer 1. Brightened image. But everything is track matted out except the underpants.
Layer 3: track matte
Layer 4: overall color-grading adjustment layer to blend everything.

How to generate track matte -- the guy's underwear was the reddest red on the set, so I played with curves or degrees of tinting to exaggerate the red, and reduce the red of everything else. It was fiddly. The idea was based on an early Andrew Kramer Video Copilot tutorial, where he isolated the skin of a bride's face from her eyes, nose and mouth to blur out blemishes.
 
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