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Confused about MATTES.
Hi,
Long-time FCP editor, but have a gap in my knowledge about a few things [ok, many things, but what you gonna do?]
If you look at https://www.istockphoto.com/file_closeup/when/daytime/morning/3256697_good_morning_spring_ntsc.php?id=3256697 for example, what you see is an animation, with a corresponding matte.
Now, what I want to know is, what is that matte for, and what are \
the steps one would need to take in FCP to effectively use that
matte?Thanks in advance.
To quote a famous sig-file here, “thanks for helping out a knucklehead’.
Wayne
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5 Replies
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You can use the matte to make the grass grow over the background video of your choice.
You would do this by placing this matte between on a video track between the grass video (put on top layer) and your background (bottom layer) and then selecting “travel matte-luma” as the compositing mode of the top layer clip.For more on this and other compositing modes see page III-366 in the FCP Help guide.
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O.K.
Layer 1 : Background ( Sky, 720 x 576 )
Layer 2 : Grass Fill ( 720 x 576 )
Layer 3 : Grass Matte ( 720 x 576 )You can see that all these images fill a normal sized SD PAL frame, if you were to layer each of them you would only see the top layer, in this case the matte. What this matte does, when the travel matte luma composite mode is used, is to let you see the background,(sky), with only the white part of the grass showing, it ‘cuts the hole’ really. That hole is then filled with the Grass fill.
A matte and fill need to be the same length, size and speed, and each needs to be started at the correct frame for them to work properly, if not you get a lag and unsightly black edging, which is just plain wrong.
I hope this helps… -
Walter does a great job in this tutorial series
https://www.creativecow.net/articles/biscardi_walter/FCPTravelMat1/index.html -
Thanks so much, guys!
Wayne
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I have a set of tutorials for using travel mattes in the Cow Tutorials section.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”Read my blog! https://blogs.creativecow.net/WalterBiscardi
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