[Chimera-users] ppt and movies

Elaine Meng meng at cgl.ucsf.edu
Thu Nov 22 13:54:11 PST 2007

Hi Markus,
I can answer this one:
> Why does the command movie record supersample 3 give virtually the  
> same file size then just movie record?

Supersampling in Chimera initially saves a larger image for each  
frame but then samples it down to the requested size.  This reduces  
"stairstepping" along edges without changing the pixel dimensions of  
the image that is ultimately saved for each frame.  It increases  
calculation time rather than file size.

Supersampling is also an option for saving individual images (File...  
Save Image) when you are not raytracing.  You can see the difference  
provided by this feature independent of the movie-encoding process by  
comparing images saved with and without (1x1) supersampling.
Elaine C. Meng, Ph.D.                          meng at cgl.ucsf.edu
UCSF Computer Graphics Lab and Babbitt Lab
Department of Pharmaceutical Chemistry
University of California, San Francisco

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