Rendering time
by sami kallinen
on
Oct 16, 2005 at 4:36:00 pm
So I have one huge composition with a patchwork of 300 small clips. Resloution of the composition is 14400*11520. This composition is never rendered but dragged into another composition that is SD PAL where I pan from one clip in the patchwork to another. Basically making transitions between clips that scan over the patchwork of clips. No scaling involved. In other words this composition is only displaying a little detail of the patchwork at any given time. It is outputed as uncompressed. The sourceclips on the patchwork are motion jpegs. When I render the SD composition, will it have to render the complete frame of the underlying patchwork to get to the small section i am interested in? Or is there another explaination to why this is a very slow render?
Re: Rendering time by Aharon Rabinowitz on Oct 17, 2005 at 3:07:58 am
I'm not sure I understand the question completely, but given some of the facts you laid down in there...
I know that compressed files (both going into and out of AE) slow it down in rendering. Also the high-res nature of your comp is absolutely going to make it render slower. That comp size is probably a killer.
Just my thoughts - not sure if I fully understood.
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Aharon Rabinowitz
aharon(AT)yahoo(DOT)com
www.allbetsareoff.com
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Creative Cow Master Series DVD
particleIllusion Fusion Volume 1
available @ www.pIllusionFusion.com
Re: Rendering time by sami kallinen on Oct 17, 2005 at 2:11:49 pm
thanks Aharon. sorry, my question was a bit messy, i'll make another attempt:
i have two compositions. one high def. in the hight def composition i've built a patchwork of small clips side by side. and the second composition that is standard def. i only make a movie out of the standard def comp.
i drag the high def into the standard def. which means i only see a very small section of the high def in the standard def on the screen. like this diagram: http://www.xs4all.nl/~sakalli/diagram/example.gif
(the red rectangles represent the many clips that the high def composition consists of and the black section is what is visible in the standard def.)
then by manipulating position of the high def composition under the standard def composition i create transitions between the individual clips in the patchwork. i only make a movie from this sd composition.
my question: my movie is standard definition but as it uses a section of the underying high def composition, does AE have to render the complete underlying high definition composition frame to calculate the section that constitutes the the standard defitnition frame? and is that an explanation for why rendering this standard definition comp takes so much time?
not sure if i succeded to to make this is any more clear...
Re: Rendering time by Aharon Rabinowitz on Oct 17, 2005 at 6:55:11 pm
When you say small clips - do you mean nested compositions with animated layers in them, or video footage?
Honestly I'm not I know the answer to your question, but I'd guess that precomped elements (not video like Quicktime or AVI)nested in the main comp, even if if off to the side of the main comp (where it can't be seen), still require the overhead of animating them, though it might not be as much if it were actually seen. For movie clips, I'm not really sure.
This is just guessing, based on my experience, so if anyone knows better, please chime in.
----------------------------------------
Aharon Rabinowitz
aharon(AT)yahoo(DOT)com
www.allbetsareoff.com
----------------------------------------
Creative Cow Master Series DVD
particleIllusion Fusion Volume 1
available @ www.pIllusionFusion.com
Re: Rendering time by Aharon Rabinowitz on Oct 19, 2005 at 11:31:15 pm
I have to admit, I'm not sure what to tell you. Not really sure what's going on under the hood, but I'd love to know.
Here's something that might help - turn on the Caps lock key while you;re rendering. It has been known to shave some time off a render becasue it keeps the comp window from having to update the visible image.
You may want to repost in a new string with the heading "Do invisible layers have to be calculated?" and see what other people say. I'm a at total loss.
----------------------------------------
Aharon Rabinowitz
aharon(AT)yahoo(DOT)com
www.allbetsareoff.com
----------------------------------------
Creative Cow Master Series DVD
particleIllusion Fusion Volume 1
available @ www.pIllusionFusion.com
