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Jagged edges
I just finished creating a comp, rendered it out, and previewed it on video. Unfortunately, any diagonal lines (either from a shape or a still image) have the jagged, aliased look to them. Is there any kind of an anti-aliasing filter? Everything had been looking great when I was working with the video in After Effects. Lines were clean and smooth. I think I’m exporting everything the way that I should be. Rendering upper field first, full res, best quality. Everything else is the default. Is there something that I’m missing?
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3 Replies
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first, did your ‘export’ or ‘render’? you should render, by using make movie or add to render queue from the compostion menu. you’ll have more control over your render options and output module.
if you had footage in your comp, and the fields were interpretted correctly (it sounds liek they were, if it looked good in preview), then in the render settings all you should need to do is set the fields to the correct dominance (same as footage).
how are you viewing the render? are you seeing jaggy edges on a broadcast monitor as the clip plays or on a computer screen? if you are seeing jaggies on a computer screen, then that is most likely due to a computer screen not drawing the image with scan lines. you will need to view your clip on a tv or broadcast monitor for the interlacing to draw correctly, and not look jaggy.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
I have been rendering by adding to the render queue. I am not using footage in the comp; only still images, or shapes and text created in AE. I’ve been viewing this on both a computer monitor, and on an NTSC monitor. In both places I see the jagged lines.
I did throw the Reduce Interlace Flicker filter onto it and that helped a lot, but it’s not ideal at all. I also just tried rendering as a non-interlaced TIFF sequence. The still images look pretty good, but still have a bit of looking jagged. Is this just something I need to accept that AE and NTSC will do with fine lines?
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if the interlace issues are within details of the photos/images then there photoshop action that can help called deflickerator. you need to put it in the photoshop actions folder and then load the action from the actions palette in photoshop, then just play the action on the images and re-save them. the action selectively blurs areas of the image that can cause interlacing issues.
however if the problems are on the edges of the images, then you may need to try and soften those edges. you could try to create a mask just inside the edes of the image, then choose feather from the mask options and set to a small value.
can you post a still image or short clip showing the problem? it would be easier to make suggestions to help you out if i could see the problem.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW
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