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how to improve effect "rate of change" or frame rate?

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Wed, 05/09/2012 - 20:27
#1
Matt Sim
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how to improve effect "rate of change" or frame rate?

Hi,
I'm using glow + blur effects on still images (Titles and credits). I've added 4 keyframes so that the text appears to "blur in" / "blur out".

I'm not sure what the right terminology is, but, I'm looking for a way to improve the "frame rate" or the "rate of change" so that the effect looks less choppy when rendered. Currently if the rate of change for the glow is too fast, then it appears to "jump" between levels of glow. Even if i can just increase the number of jumps, i'd be happy with a tiny bit of choppyness.

Any ideas?
Thanks!

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Thu, 05/10/2012 - 10:58
#2
normcross
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Re: how to improve effect "rate of change" or frame rate?

Hi,

I just tried this and you're right, that's if you use a five second title clip. I dragged my title clip to ten seconds, then adjusted the key frames to give both the glow and blur a longer and smoother gradient, up and down.

A two pass render and it looked great. Real smooth. Actually, I quite liked this for an easy title clip effect.

I noticed that starting and finishing with total blur still slightly showed the title, so a small fade in and out would help.

I hope this is what you meant.

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Thu, 05/10/2012 - 17:18
#3
Matt Sim
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Re: how to improve effect "rate of change" or frame rate?

Thanks to the reply, but 2-pass didn't seem to have any effect (no pun intended). The glow change is still jumpy/choppy. I'm wondering if it has to do with the inner-workings of the effect and how it is interpolated between keyframes. For now, i'm gonna leave it at good enough; but when i've got the time to play, i may try doing the math manually and adding a keyframe about every 5 frames. This may be manageable... provided the effect doesn't need to change for each clip.

Yeah, i like look of it too. For my situation, the text is panning up during "blur in", hold for a moment at center screen, then pan down + "blur out".

Instead of panning, one could also overlap + dissolve the text clips. Like one continuous cloud that morphs between messages. can you tell i'm having fun :P i'm new to all this, and having a blast!

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Thu, 05/10/2012 - 17:50
#4
normcross
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Re: how to improve effect "rate of change" or frame rate?

You just added another ball to the game :-)

You never said it was panning! Might have a little play with this later, for a bit of fun.

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Thu, 05/10/2012 - 18:54
#5
normcross
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Re: how to improve effect "rate of change" or frame rate?

Ok, haven't got a clue what you have written, so I just did a Hello World. There's three versions, the first is static, the second is panning and the last is panning slower. They all end real abrupt. This is my practice folder and there happened to be some music in the audio channel. Sorry.

http://youtu.be/FfzjV392cB8

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