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Activity Forums Adobe After Effects Hair line

  • Posted by Mike Psenka on May 25, 2007 at 6:21 pm

    I’m sure this is probably quite simple, but I must admit I’m a little embarrassed to ask:

    How do you create a sharp, 1-pixel wide border around a mask? When I use stroke and set it to 1 and reduce spacing, it always ends up 2 pixels wide.

    Any help would be greatly appreciated.

    Thanks,

    Mike

    Quejet replied 18 years, 11 months ago 3 Members · 3 Replies
  • 3 Replies
  • Steve Roberts

    May 25, 2007 at 6:44 pm

    The border needs to sit exactly on a row of pixels. Otherwise, it sits between and you get some antialiasing happening. Which you want, normally.

    So zoom in (a lot) and tweak each side of the mask until it pops into place, on a row of pixels.
    Keep in mind, this only works for vertical and horizontal lines.

    Now if you’re going to show this on TV, you need lines bigger than 1 pixel, or else you’ll get strobing.

  • Mike Psenka

    May 25, 2007 at 7:47 pm

    thanks. I’ll try this. Not for TV use so this should work.

  • Quejet

    May 25, 2007 at 7:54 pm

    Can I suggest you simply turn the quality down for that layer?

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