Re: Slowdown in rendering animations 2004-01-26 - By Andrew Turner
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Hey, that worked!
From: "David Bell" <nordwind53@(protected)>
Reply-To: Carrara@(protected)
Date: Mon, 26 Jan 2004 11:45:13 -0500
To: <Carrara@(protected)>
Subject: Re: [Carrara] Re: Slowdown in rendering animations
Hi-
What I have found is that if you are rendering to a movie, and using
significant compression, particularly compression that looks at many frames
for each frame it adds, rendering will slow down over time. For that reason
(and others) I do my compression as a post processing step. What I use is
the Animation codec with no compression. The files are fat but there is
little render time overhead and easy to edit afterwards. Basically you get
the advantage of rendering to individual files without the per file
directory overhead and the book keeping of where to keep these files.
Yours,
David
__ ____ ____
Nordwind53@(protected)
David E. Bell
__ ____ ____
-- -- Original Message -- --
From: joe_ashear
To: Carrara@(protected)
Sent: Monday, January 26, 2004 11:32 AM
Subject: [Carrara] Re: Slowdown in rendering animations
Andrew,
I don't know the answer for sure, but I have a theory. If nobody
chimes in with a definitive answer, at least you have this. :-)
I think it has something to do with rendering directly to a finished
movie format like QuickTime or AVI. I assume you're using QuickTime,
since you say you're using a Mac. I think that as the file gets
larger, it takes longer and longer to append a new frame to it. So you
might have better results if you render to individual files and THEN
save the finished movie.
I just tried rendering a series of files in "Sequenced TIFF" format.
When the rendering is done, you see a completed movie in Carrara, and
you can save that movie in QuickTime format. I used a very simple
file, so I couldn't tell whether there was any speedup. But you may
see a difference.
- Joe
--- In Carrara@(protected), "Andrew Turner" <turner410@(protected)> wrote:
> Hi -
>
> I've noticed, unfortunately, a tendency of slowing down a LOT
> while rendering animations -
>
> For example, three spheres just flying around a point force -
>
> Say the animation is 144 frames long; the first 35 or so render
> really, really fast... but then the time per frame jumps to about
> double, and gets a little longer each frame, even though
> essentially nothing is different about the viewed matter.
>
> Physics is turned off after calculation.
>
> Any ideas?
>
> thx
> Andrew
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