> I am looking for a post-tool for motion-blur.
> I have downloaded aframes, a utility to average a couple of frames, but it
> is hard to use this utility for an animation.
> Is there a (free?) tool to create a couple of frames with averaged pictures?
> Can be windows, dos or linux ...

	As Warp explained above, the main problem with averaging frames is
the CPU cost, especially when numerous frames are required for reasonnable
effect (fast motion or close objects for instance). But also it is difficult,
even with POV-Ray, to design a realistic motion blur this way. Indeed, ave-
raging frames which are separated by constant time (i.e. constant clock_delta)
means that the camera shutter would be continuously open (assuming a lot of
averaged frames). This is actually the case for human eyes, but hardly possible
for mechanical device which is frame-based (as in cinema).
	Usually the shutter speed is faster than the frame rate by a certain
amount, typically something like twice faster (1/50 s for 25 fps). To achive
that with POV-Ray, you may have to decompose all your animation as if you were
rendering each frame seperately. Each frame would be rendered for instance ten
times with a clock_delta/2 (or whatever) maximum time seperation between the
first and the last sub-frames.
	To my knowledge, only MegaPOV is able to do such thing easily for
moving objects/lights. If you want to move the camera, it's not yet availabe
there (you may try my patch in this case; only text documentation yet).


*** Nicolas Calimet
*** http://pov4grasp.free.fr

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