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dreggsy
July 4th, 2003, 12:28 AM
I noticed in your entry for vfx001
that it took 8 hours to render.

It seems as this was due to the amount of particles.
or you have an old PC.

This is presuiming you are using Combustion.

I have a theory I dont know it it really works but
I use it all the time.
Use the commit to disk feature.

this could be long winded but .....here we go.

on one of your particle layers
commit this to disk-
full rez best quality
-this will ask you what type of file you would like
to render out to.
make sure its exactly what you want.

Try renderering it as a .png sequence (its fairly lossless and it supports alpha channels.)

once this has finished rendering
it will give you a new Switcher operator.
this lets you switch between the rendered layers and the original
operators ( so you caan still make changes
delete or switch off the particle layer
and import the newly created .png sequence.
it should import in the right place

Do this to all of your particle layers.
The same goes for displaced layers
and all other layers that have alot of filters applied to them.
and it should give you a final render alot quicker.
as combustion does not have to render every element/ filter in your final output.
good luck and happy rendering.
Jason

arvid
July 4th, 2003, 04:39 AM
while PGN is lossless, it's also pretty slow to decompress, I'd suggest TGA with RLA compression, that's completely lossless, has alpha and a fairly reasonable size, and it's faster. Runlength encoding is especially usefull with premultiplied footage (ie with lots of black data in the frame)

TrenZ62
July 4th, 2003, 10:20 PM
Thanx for the tips
I just found out about that feature so I'll be sure to use it in the future. The only reason it took so long to render was because of all the particles and effects but I just built a brand new computer geared directly for doing graphics so I know its not my computer. I appreciate the help though thanx hope to take on the next challenge as soon as I get through these combustion training cd's.

dreggsy
July 9th, 2003, 12:35 AM
So you suggest using .tga with rle encoding?
Would this be the quickest format to use?

arvid
July 9th, 2003, 05:55 AM
Sure, it's quick and easy and RLA compresion can reduce the size quite a bit :) There are other equally good formats tho, I just feel that TGA is a common format supported in most apps.