[Chimera-users] POV-Ray setting for movie making

Eric Pettersen pett at cgl.ucsf.edu
Mon Apr 26 16:08:27 PDT 2010

On Apr 22, 2010, at 11:13 AM, Thomas Goddard wrote:

> Hi Paul,
>  Eric Pettersen, another Chimera developer, I believe tested some  
> different POV-ray settings, and Greg Couch has worked on that code a  
> lot.  I don't really know anything about the POV-ray settings  
> because I think I get better results without POV-ray as discussed by  
> Elaine in a previous mailing list message.
> http://www.cgl.ucsf.edu/pipermail/chimera-users/2009-June/004030.html
>  I'm sending your POV-ray settings question to the mailing list and  
> perhaps Eric or Greg will have suggestions.
>> Thanks Tom,
>> The mpeg4 movie with qscale 1 looks pretty good. I forgot to  
>> mention in
>> my first message that I was setting bitrate to 10000, and yet still  
>> the
>> results were fuzzy around the edges. Seems like variable bitrate is  
>> the
>> way to go.
>> Can you give me any advice on antialias method, depth, threshold
>> (currently I’m using recursive, 3, 0.3, respectively) or jitter (I’m
>> using true with an amount of 1.0). I’ve read the chimera manual  
>> entries
>> on the topics but I’m still confused, can’t see much difference  
>> when I
>> change variables one at a time. Do you have favorite settings for  
>> these
>> variables? Time to process, as long as it stays within a week for a  
>> 1600
>> frame movie is fine, the product will go out as supplemental material
>> for a paper, so I’m willing to wait if some change to the settings  
>> I’m
>> using now will make a difference.

Hi Paul,
	It's been awhile since I fiddled with the POV settings, but I guess I  
do have two recommendations:

1) Move the antialias threshold back to at least 0.5 -- and I'd  
suggest using the default 1.0.  In my tests I found no visual  
difference whatsoever between 0.3 and 0.5 and minimal difference  
between 0.5 and 1.0, whereas it makes a considerable time difference.

2) Turn off jitter.  As it says in the documentation it looks bad in  
movies (particularly if you are using text labels).


                         Eric Pettersen
                         UCSF Computer Graphics Lab

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://plato.cgl.ucsf.edu/pipermail/chimera-users/attachments/20100426/44be6cb0/attachment.html>

More information about the Chimera-users mailing list