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Poor quality of still image upon lossless output

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Rodney HudsonPoor quality of still image upon lossless output
by on Feb 17, 2010 at 7:55:50 pm


This is my first post and I'll start with a technical one.

I have an AE project which contains multiple still images.

Some of the images were adjusted to draft quality because they appear more crisp as a result.

The image that I'm having a problem with is a still image (JPEG) of a web page. It looks fine in Photoshop so the quality does not appear to be an issue.

When I have the layer quality set at Best within AE, it softens the image too much so the text gets a tad fuzzy but when it's set at draft quality it appears nice and crisp.

When I do a RAM preview, it appears crisp just the same as when I'm just parked on it.

When I do a lossless, uncompressed output it appears soft just as it did when I had the layer quality set at Best.

I am wondering if you can or can't mix different quality settings for different layers?

Just so you know, the other photos I have set at draft quality appear nice and crisp on output. It's just this one that's giving me a problem.

Any input/theories/smacks in the face would be much appreciated.



Multimedia Specialist/Project Manager

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Todd KoprivaRe: Poor quality of still image upon lossless output
by on Feb 17, 2010 at 8:46:17 pm

I'm guessing that your layer's position and/or anchor point are not integer values---i.e., pixels in the source image are not lined up with whole pixels in the compsition.

See this page for more details. Here's an excerpt:
"If the pixels of a layer aren't positioned directly on the pixel boundaries of the composition, a small amount of blur occurs—very similar to anti-aliasing. This blur is not a problem for an object in motion, because objects in motion have motion blur, but it can soften fine details in a static image. Also, if an image is moving slowly or at just the wrong speed, the image can appear to oscillate between sharpness and blurriness."

Todd Kopriva, Adobe Systems Incorporated
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Rodney HudsonRe: Poor quality of still image upon lossless output
by on Feb 18, 2010 at 3:08:53 pm

Thank you very much for your recommendation, Todd. I was all set to try it this morning when I realized what was happening. When choosing my output module, I chose the "Best" setting rather than the "Current" setting. With this setting chosen, it introduced anti-aliasing which robbed the specific photo of much of its detail. I feel kind of stupid not to have thought of that but I guess I learned something which is ALWAYS god. Thanks again!

Multimedia Specialist/Project Manager

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