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Motion blur of more than one frame? (smoke trails)
Hi,
I want to generate an imitation of a trail from a moving smoke stick: like all those beautiful photos of a smoke. Basically, it’s a trail of a moving smoke source. More dense in places where it moved slower, or several loops of the trail overlap.
Think this can be done by moving a white line in 3D space as if it was a real smoking stick, shot to a single frame with a very long exposure.
I did a comp where a line moves within 3D over 130 frames.
How can I make the motion blur take these 130 frames as if it was a single frame with a complex movement, and accurately blur it along a path, keeping track of speed and direction variations in the move?I tryed time-remapping 130 frames into a single one – didn’t do the job;
Echo effect draws discrete lines, instead of a seamless trail.Any idea – which plugin can do the job, or how to trick the built-in Motion Blur to achieve the seamless trail effect?
Sergei.
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3 Replies
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This would probably be easier to do with a particle effect. If the particles are set to a very low opacity and no velocity, when you move the emitter around you would get an effect such as what you describe. You’d need to make sure the particle was a very soft shape too.
– The Great Szalam
(The ‘Great’ stands for ‘Not So Great, in fact, Extremely Humble’)No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.
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Here’s the sort of image I’m looking forward to generate:
Trick here is the flow of a line segment, leaving a trace behind. No the particles case, isn’t it?
Kind regards,
Serge!Sokolov -
You could probably get something similar adapting this technique.
This tutorial, which is part of a series on creating a genie lamp, is actually intended to create smoke.
Neither technique will look exactly like that picture, but you could get pretty darn close with the right shape used.
This one, using Geomancey from Digital Anarchy isn’t being intended to make something like that. However, if you look at the very end, they tweak it to something that might point you in the right direction.
Or:
I know you said you tried using the echo effect, However, you could move a stick shape (with varying width and levels of opacity) around, then use the echo effect with a lot of echoes and make sure the echoes are not spread very far apart. There are also plug-ins like CC Wide Time and others that you might want to look at. In any case using any of the Time effects like this will require you to use a lot of echoes or copies and you might want to use a vector blur, or some other blur along with it.– The Great Szalam
(The ‘Great’ stands for ‘Not So Great, in fact, Extremely Humble’)No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.
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