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what’s the best technique to get rid of black edges without eroding and shrinking the matte too much? i do a nice soft matte and a core white and combine several together but still get that black edge. any tips?????????????
Have you gried to use the blening tool in the keyer. If you bend slightly the corner of the spline on the right side you can either darken the edges or brighten the edges. Sometimes its just enough to do the trick.
There are no best way. You need time and experience well.
key with many layers,, a nice tight key at the bottom and keep adding segments of it on top..whats the shot like ? HD ? 35mm ? 16mm ? green screen/bluescreen ? have u tried the 3d keyer ? depending on the shot u may be able to get a difference matte if u have a clean pass, if all else fails then jump into paint and wash the edges or finally youl end up rotoscoping stuff…have u tried other keyers like primatte/tinder etc ?
Are you keying in the Modular keyer? If so take a look at your spill suppression – if you’re using the curves, try raising the luminance of your screen colour as well as desaturating or hue shifting it. You could do the same thing with a secondary in the ColourWarper.
You could also try a tight little light wrap sort of deal – take your matte, multiply it by an inverted copy of itself to get an edge matte, and mix your background on top of the comp through that. Or use that matte to do some colour work.
Experiment! 🙂
A good trick is to use lens spark by sapphire to fatten out the edge of your fill slightly. To do this render out the matte as is, and then use it as the lens input for a sapphire lens spark and the image you are keying as the source clip.
Set the “Amount ” value to .004 and the “Blur Lens” value to .040. Make sure filter is set to “yes”. Use this “fatter” image as you fill layer (dont change the matte layer keep it the same). I hope this helps some.You can also try to scale a little bit the front only of your layer through a front source node, so that the matte is filled with front matter, not black edge. You may have to move the center of the axis in the source node to the baricenter of what you keyed and then scale up a bit.
If you use the Master keyer, you may also want to try the Blend parameters in addition to the blend curves.
ventrap
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