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
ssh### [at] rexnetnet

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Attachments:
Download 'steve.mpg' (564 KB)

try motion blur


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I am viewing it with Media Player 7 on Win 98, and I don't see a double image.
What frames is it in?

Josh

sshelby 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
> ssh### [at] rexnetnet
>
>                 Name: steve.mpg
>    steve.mpg    Type: WMPLAYER File (video/mpg)
>             Encoding: x-uuencode

--
Josh English -- Lexiphanic Lethomaniac
eng### [at] spiritonecom
The POV-Ray Cyclopedia http://www.spiritone.com/~english/cyclopedia/

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Steve,
    I would try to increase the number of frames in the animation and slow
it down a bit. Maybe even shrinking the size of the animi. I think the cause
is the large image size and the speed of the animation. You also have large
movements between frames, this makes it very jumpy, not smooth at all. Try
converting the animation to Bink by Rad Game Tools. Bink has given me better
compression and a smoother animation than MPEG.

Rad Game Tools
http://www.radgametools.com/

Regards,
C.J. - POV User


"sshelby" <ssh### [at] rexnetnet> wrote in message
news:3a756bc8@news.povray.org...
> 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
> ssh### [at] rexnetnet
>
>
>

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Josh English schrieb in Nachricht <3A757E6B.31A13EA3@spiritone.com>...
>I am viewing it with Media Player 7 on Win 98, and I don't see a double
image.


Me neither. Perhaps it's a problem with your monitor - too bright?

Marc-Hendrik

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I think I see what he is talking about.
Media Player 7 in WinME here but should be the same.  Anyway, esp. when the
ball goes past nearby, the leading and trailing edges go into a kind of
unplanned motion blur since there isn't any actually used as you can see by
freeze-framing it.
My guess is it's the decoder doing it then.  My Voodoo3 16MB video ought to be
suitable enough to prevent the effect and yet it's there.  Would not think it
to be the video card anyhow.  Refresh rate on this screen is around 80Hz.
Nothing I know to try except a different encoding but it might not solve this
for everyone's different mpeg players.

I have a suggestion for the animation, wanted or not.  Maybe use a planar image
map for the photo, putting it inside the sphere, and keep it counter-rotating
like it is now.  Just seems to me that photos of people aren't good wrapped
onto spheres.  Unless you want that funny mirror effect.

(watch... you'll end up telling me it already is done that way!)

Bob H.

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Bob,
FYI, the photo on the sphere is an actual (virtual) reflection. it is on a
plane behind the camara, facing the sphere. The closer it is positioned
behind the camara, the more distorted the image. I compromised on the
position to get the least distortion without the reflection appearing too
small.
Steve
Bob H.
<per### [at] aolcom?subject=PoV-News:%20&body=Relating%20to%20POV-Ray:>
wrote in message news:3a75e7c3@news.povray.org...
> I think I see what he is talking about.
> Media Player 7 in WinME here but should be the same.  Anyway, esp. when
the
> ball goes past nearby, the leading and trailing edges go into a kind of
> unplanned motion blur since there isn't any actually used as you can see
by
> freeze-framing it.
> My guess is it's the decoder doing it then.  My Voodoo3 16MB video ought
to be
> suitable enough to prevent the effect and yet it's there.  Would not think
it
> to be the video card anyhow.  Refresh rate on this screen is around 80Hz.
> Nothing I know to try except a different encoding but it might not solve
this
> for everyone's different mpeg players.
>
> I have a suggestion for the animation, wanted or not.  Maybe use a planar
image
> map for the photo, putting it inside the sphere, and keep it
counter-rotating
> like it is now.  Just seems to me that photos of people aren't good
wrapped
> onto spheres.  Unless you want that funny mirror effect.
>
> (watch... you'll end up telling me it already is done that way!)
>
> Bob H.
>
>
>

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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
>
> 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,
> 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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