Today we were with Ferg to try our hands at keying for the studio segments of our news pieces. We were using some stock footage that Ferg had to hand and some of our own footage from the autoprompt workshop.
I had used chroma key before, and dabbled with alpha keying in Sony Vegas for my old YouTube channel:
This was my first time using After Effects to key video and for graphics, so I was eager to experiment with what I had available.
We began with looking at Keylight to key the news anchor footage onto a newsroom background. This involved picking the green colour on the screen from the green screen - the software then removes everything that colour from the clip. I toyed around with the different levels to see which worked best, and found that even when the background appears to be a solid colour, it is still easy for shadows and alterations in light to come through.
We then looked at luma keying, which differs from chroma key, as it makes the video transparent based on brightness rather than colour. This is more useful with graphics, so we played around with editing text onto a background.
I was more or less familiar with these tools already, but it certainly helped to practice in After Effects, as I had not used the program that much before. I am unsure as to whether our news piece should rely on a green screen or not for the studio segment.
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