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Blurry, choppy scrolling
I’ve got a composition with about 44 photos that scroll in rows across the screen. When setting it up in After Effects, the motion seems fine and clear.
But then when I rendered out to DVD, and watched that, the photos’ motion was blurry and choppy.
I’ve got video clips shot from a DVX100a, so everything is set for 24p. I’m sure this is all due to some check box that I’m missing tucked away in a menu. Can someone give me a fairly exact set of options to use to render this out smoothly?
I doubt there’s an “ultimate” setting, but any suggestions would definitely help me.
This project is just killing me…Thanks in advance!
-Aaron
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4 Replies
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Make sure motion blur is enabled for each layer. You can then adjust the shutter angle in the composition/advanced settings for a more or less blurred effect.If you go for heavy motion blur, you might want to increase the samples per frame. All this will increase rendering time, but make it look much better.
Jon Geddes
Motion Graphics Designer
http://www.precomposed.com -
The guys paying me for the video would like the photos as clear and smooth as possible. What’s the best shutter angle for quality/smoothness?
Also, you mention samples per frame, are you referring to two pass rendering, or is this something else?
I’m also going to try rendering with Animation codec, that ought to improve it. The results I was getting rendering with a DV codec seemed to be fine, with the exception of these scrolling photos.
Thanks for the quick reply, I’m going to continue digging around.
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While the composition is open, press Ctrl+K (assuming you are using a PC) which will bring up the composition settings. Go to the Advanced Tab and you will see the settings for shutter angle and samples per frame. The samples per frame is used for motion blur. Imagine this; when a layer is moving really fast, and motion blur is enabled, you will see trails from the motion, just like you would with a video or still camera on an object moving very fast. The number of trails you see, is the ‘samples per frame’. So if you have the samples per frame set to 2, you would see 2 of the same picture slightly offset (and slightly faded) to create the illusion of motion blur. The more samples per frame, the more realistic it will look (I like to use at least 20), however it will take almost 20 times longer to render that particular layer because of all the offset duplicates it has to create. As for the shutter angle, think of it as shutter speed. The lower the shutter angle, the faster the shutter speed, and therefore less motion blur. I generally like to leave it at default (180), however if you think it looks too blurry, you could try to lower it. Also, no need to mess with the shutter phase.
Jon Geddes
Motion Graphics Designer
http://www.precomposed.com -
Fantastic! Thank you very much for explaining that. That info was exactly what I was looking for.
You guys are life savers!Cheers,
Aaron
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