I am close to finalizing my IRTC animation entry for this round and I
have a few questions about getting a decent quality on the animation
when I encode it.

I am planning on a 320 by 240 image size, so should I render at that
size or render at a larger size and let the MPEG encoder shrink it?

How often should I set a keyframe? If I am using 24 frames per second
and each camera shot is set up in nearly even second intervals, should I
have a key frame every 12 or 24 frames?

I will be doing the rendering on an iMac, but I have virtual PC so I can
use DOS and Windows based compilers.

Thanks for any help anyone has.

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

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Josh English wrote:
> 
> I am close to finalizing my IRTC animation entry for this round and I
> have a few questions about getting a decent quality on the animation
> when I encode it.
> 
> I am planning on a 320 by 240 image size, so should I render at that
> size or render at a larger size and let the MPEG encoder shrink it?
> 

Only 11 days lefts... I hope your files render very quickly.
povray is usually better with AA than oversized shrink, 
so I would render at the final image size, but you may want to
try it...


> How often should I set a keyframe? If I am using 24 frames per second
> and each camera shot is set up in nearly even second intervals, should I
> have a key frame every 12 or 24 frames?
> 

Who care... key frames are usefull for fast forward/backward and reducing
the blurry introduced by prediction.
My hint: renders all your frame (that's the longuest part),
then try both setting and see which one is better
 (more key frames usually increase the file size, so beware of
the 5 Meg limits).

Post a reply to this message

> Josh English wrote:
> >
> > I am close to finalizing my IRTC animation entry for this round and I
> > have a few questions about getting a decent quality on the animation
> > when I encode it.
> >
> > I am planning on a 320 by 240 image size, so should I render at that
> > size or render at a larger size and let the MPEG encoder shrink it?
> >
>
> Only 11 days lefts... I hope your files render very quickly.
> povray is usually better with AA than oversized shrink,
> so I would render at the final image size, but you may want to
> try it...

It's taking about 1 hour to render 14 seconds of animation at 24 fps... my
animation is not full of great scenery, I'll be the first to admit that.

>
>
> > How often should I set a keyframe? If I am using 24 frames per second
> > and each camera shot is set up in nearly even second intervals, should I
> > have a key frame every 12 or 24 frames?
> >
>
> Who care... key frames are usefull for fast forward/backward and reducing
> the blurry introduced by prediction.
> My hint: renders all your frame (that's the longuest part),
> then try both setting and see which one is better
>  (more key frames usually increase the file size, so beware of
> the 5 Meg limits).

Thanks, I have enough time to get the rendering done, I'm worried about the
experimentation time to get the MPEG looking good, not blurry, and under the
file size...

Josh


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

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