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Masking on white background shows nasty black lines
Hi,
I have a video material shot on white background but with edges beeing a bit yellowish. So I decided to mask the person in the white center of the screen and put the track over a solid white background, but when I do that I gest nasty black lines along the Mask, and no Feather setting helps (it actually makes it look like a shadow).Can anyone help?
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6 Replies
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Are there any effects at all applied to the clip/track that has the mask on it?
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No, it`s a clean track. The feather option acts insane too, let`s say on 7,5 it`s an insanely big shadow along the masks line, and on 7,6 it`s a perfect fade…
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I’ve seen what you are talking about before (I used to do what you are doing all the time), but not recently and I seem to remember some sort of effect causing it, but I can’t remember what (and it wasn’t an obvious one – just a bug). I know. Real helpful. Sorry!
One other option might be to luma- (or chroma-) key the yellow out and use feather on that to blend. That’s actually what I used to do, with the mask only being for garbage at the edges.
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Hi, just noticed your post. Don’t know if you have resolved it but are you aware of the ‘pre and post’ application of effects? There is a small arrow pointing left or right on the left hand side of any effects that you have applied on the clip. Try changing this.
I did notice however that someone asked if it was a clean track which apparently it is. If so, sorry, not much help.
Good luck.
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Thanks fo your hints – I can`t see any arrows next to effects, where should I look for those?
Here`s how i ‘bypassed’ (cause definately not solved) my problem. I Mask clips, Disable all Track/Clip effects – then I have a clean mask. I render this to a file and do Effects in another session.
Apparently these lines/shadows ONLY appear when using any sort of effects on the clip/track that is beeing masked. That`s the most stupid bug i can think of, I don`t know how they could let it happen.
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Hi again.
Have a look at this post below. Same problem as yours and the same issue I had. It is difficult to explain it but it is to do with adding effects to the masked/masking clip pre and post masking.
But here is the arrow, (in the video fx window); give it a try. It was a very simple solution for my shadow problem!
https://forums.creativecow.net/thread/208/877636
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