seems fine to me. mp6 win2000 p3

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Rick,
Please excuse my ignorance, I'm fairly new to this, What is motion blur and
how woul it apply to this particular problem?
Rick [Kitty5] <ric### [at] kitty5com> wrote in message
news:3a757520$1@news.povray.org...
> try motion blur
>
>
> --
> Rick
>
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> Rick,
> Please excuse my ignorance, I'm fairly new to this, What is motion blur
and
> how woul it apply to this particular problem?

I'm guessing that Rick thinks that motion blur will provide additional
smoothing between frames.

Motion blur is best applied through megapov.

I'm not sure that this will solve your problem, but as I can't actually
reproduce your problem, it's hard to say.

I would have thought the best solution would be to output more frames in
your original pov source - the problem seems likely to relate to a large gap
between moves.

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"Tom Melly" <tom### [at] tomandlucouk> wrote in message
news:3a76ce7e@news.povray.org...
>
> I'm guessing that Rick thinks that motion blur will provide additional
> smoothing between frames.
>

... just to clarify - "will provide the appearence of additional
smoothing.." - basically, it might fool your eye into seeing a smoother
transition. The motion blur will fool your brain into a stronger perception
of the ball as a moving object. Motion blurring will not add additional
frames.

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"Tom Melly" <tom### [at] tomandlucouk> wrote in message
news:3a76ce7e@news.povray.org...
> > Rick,
> > Please excuse my ignorance, I'm fairly new to this, What is motion blur
> and
> > how woul it apply to this particular problem?
>
> I'm guessing that Rick thinks that motion blur will provide additional
> smoothing between frames.
>
Motion Blur does provide smooth transition between frames. And it is
essential for the realism.
In addition, with motion blur you do not need as much frames to produce
smooth motion.
Maan

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> Motion Blur does provide smooth transition between frames. And it is
> essential for the realism.
> In addition, with motion blur you do not need as much frames to produce
> smooth motion.

exactly what i was thinking.

none of you mentioned that it looks cool as well though :))


--
Rick

POV-Ray News & Resources - http://povray.co.uk
Kitty5 WebDesign - http://kitty5.com
Hi-Impact web site design & database driven e-commerce
TEL : +44 (01625) 266358 - FAX : +44 (01625) 611913 - ICQ : 15776037

PGP Public Key
http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=0x231E1CEA

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"Rick [Kitty5]" <ric### [at] kitty5com> wrote in message
news:3a77eb48@news.povray.org...
>
> > Motion Blur does provide smooth transition between frames. And it is
> > essential for the realism.
> > In addition, with motion blur you do not need as much frames to produce
> > smooth motion.
>
> exactly what i was thinking.
>
> none of you mentioned that it looks cool as well though :))
>
And that too :)  but I was looking at the 'natural Aristotelian' functional
side of things :O
I remember years ago a neat raytracer that supported animations.  Each frame
had motion blur of the moving animated object.  This was done automatically
as a built in capability in the raytracer.
Keyframing something is not enough at times.  Unless we can have a built in
motion blur of moving objects.  The difference is between, well, animating
an object, and.......making it move :)
Maan

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I'm using Moray with the Enzmann plug-in to create my animations. Can I use
motion blur with this, and if so, how? I have 3 different programs for
encoding  MPEG, but cannot find any mention of motion blur in the help
files.
Steve
Maan M. Hamze <mmh### [at] pleiadesnet> wrote in message
news:3a77b04e$1@news.povray.org...
>
> "Tom Melly" <tom### [at] tomandlucouk> wrote in message
> news:3a76ce7e@news.povray.org...
> > > Rick,
> > > Please excuse my ignorance, I'm fairly new to this, What is motion
blur
> > and
> > > how woul it apply to this particular problem?
> >
> > I'm guessing that Rick thinks that motion blur will provide additional
> > smoothing between frames.
> >
> Motion Blur does provide smooth transition between frames. And it is
> essential for the realism.
> In addition, with motion blur you do not need as much frames to produce
> smooth motion.
> Maan
>
>

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Wasn't it sshelby who wrote:

>I am happy with this animation except for one thing: When the ball is moving
>across the screen, it has a double image. If you stop the action, the
>individual frame is clearly defined, no double image. I have spent hours
>experimenting with every variable I can find, like resolution, frame rate,
>bit rate, compression rate, etc. I have tried several AVI compression
>schemes, and have tried four different video editing programs. I have other
>MPG animations that were done the same way as this one, and none of them
>have the problem. Do any of you experts out there have any suggestions?
>Steve Shelby

I would have guessed that frame rate would be the decisive factor.

The frame rate of 30 would probably look good on an old American
monitor, where the screen refresh rate was half the mains frequency, and
you'd get one frame per screen refresh. These days, however, fancy
monitors have refresh rates that are higher and vary depending on the
screen resolution. 

On my monitor, the 1280x1024 resolution runs at 60Hz, and I reckon that
it should look much better with the screen set to that resolution.
Unfortunately, setting the resolution that high on my machine eats a
little bit too much CPU power for me to be able to run your animation at
full speed - the achieved rate varies between about 24 and 27fps, so the
effect is still visible.

Have you checked whether it runs at the full frame rate on your machine?
It might possibly be that the other animations that looked OK had less
processing, and therefore might have been able to run at full speed. In
Windows Media Player the achieved frame rate is displayed by right-
clicking and choosing "Statistics".

-- 
Mike Williams
Gentleman of Leisure

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"sshelby" <ssh### [at] rexnetnet> wrote in message
news:3a7816e1@news.povray.org...
> I'm using Moray with the Enzmann plug-in to create my animations. Can I
use
> motion blur with this, and if so, how? I have 3 different programs for
> encoding  MPEG, but cannot find any mention of motion blur in the help
> files.
> Steve

Steve
[followups to povray.animation]
As far as I know, POVRAY as it stands in 3.1g does not have any meaningful
approach toward the issue of motion blur and/or field of depth (aperture
does not cut it).  I am starting to think that the povray team do need a
committee of artists and movie makers to give some feedback on the issue.  A
bunch of programmers is not enough :O  Because they simply got no clue into
the fields of artistic animation and the field of movie making :-)
WinMegaPov does have the motion blur support.  How do you use this in an
animation in any meaningful way:  I am still asking myself this question.  I
need to play with it to see what can be done since I have been away for
quite a while.
I do not mean to discourage you, but what follows is my personal opinion -
POVRAY is not an animation package and it lacks what it takes to talk of
animation in any meaningful way.  Yes, I know, picture averaging and what
have you - forget it!  This is medieval at best.  Even a mere support for
motion blur will not cut it.
POVRAY is a tool to produce photorealistic bitmaps.  And not a tool to
produce movies.
Is this philosophising?  Not at all!
There is a difference between motion blur as a snapshot taken with a camera
and motion blur as experienced in movies.  It will take more than the key
word Motion Blur to even get close.  and simply povray was not built as is
the case now to handle this sort of things.
Think about it as the difference between Photojournalism and Movie
Cinematography.  These are completely two different fields (I am a
Cinematographer myself).  We do not think of motion blur in movie making -
we take it for granted.  A photojournalist does think about it.  If a
photojournalist takes a picture with motion blur then you can bet  it was
meant to be or simply a mistake.  With movie making and animation it IS the
heart of the thing and that is why you do not think about it.
Is this theorizing?  Not at all!  There was a raytracer that approached
animation from the point of view of taking motion blur for granted so you
did not have to do anything at all to produce it in every frame - the
raytracer is called RayStorm.  If you wanted to render one picture with
motion blur then by all means you have to use the keyword Motion Blur.  But
if you snapped shots of animation - motion blur was there as given:  forget
about averaging bitmaps and this and that.  In an animation the motion blur
depends on the velocity of the object and the shutter speed (usually 1/40 -
1/60 of a second).  It was a sad day when RayStorm development was cancelled
back in 1998.  And my copy that I used so heavily is crashing now in windows
98.  If you want the archive I'll send it to you.  But the appraoch in it is
SO elegant and graceful it still impresses me up till now.
the issue is that animation is not about cranking up so many frames per
second to produce a photorealistic result.  This is a waste of resources and
it gives an inanimate styling to the subject matter.
Meanwhile, I am going to play with the moray Plugin and povray and see what
can be done with it.
Sorry for I did not mean to discourage you.  It is just that I feel
disappointed whenever the subject turns into the issue of animation in
povray.
Maan

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