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Jarv's Pymol Horrors
set orthoscopic, on - no silly perspective distortions
set spec_reflect, 0.0 - turn off specular reflections (shiny ness), makes a very nice flat colour aesthetic for spheres
set light_count, 0 - set number of directed lights to zero, therefore no shadows (also speeds ray trace)
set ambient, 0.6 ; set, direct 0.4 - play with mix of ambient and direct light. Fully ambient and your spheres are glowing and you can't see the edges
show spheres - the way to solid state joy; show vdW spheres for your atoms
A good starting point for ray tracing:
set ray_orthoscopic, on # no silly perspective
set ray_trace_fog, 0 # off
set ambient, 1
set reflect, 0
set specular, off # dull balls
bg_color white
set antialias, 2
set ray_shadows, off
viewport 1920,1080
set antialias, 2 - maximum anti-alias for ray tracing
bg_color white - white background for publication; requires anti-alias + ray trace to avoid jaggies
ray 2048, 1524 ; save raytrace.png - large poster / slide friendly ray trace & immediately save, to avoid risking disrupting Pymol with an inconsiderate mouse move while it's raytracing
color grey, (name N*)
set transparency, 0.2, (name N*)
show spheres, (name Cs) - put a nice big vdW sphere on the Cs ions
odd form for stick_transparency (i.e. what we're always doing for organic electronics)
set_bond stick_transparency, 0.2, (name N*)
Most useful thing is to show spheres, then manipulate the vdW radii to fit the 'pseudo atom' you are modelling. You can also use this to make nice intersecting pseudo-atom + atomistic model renders.
alter (name c), vdw=5.1
alter (name p), vdw=5.0
show spheres
Google's resolution / etc. https://support.google.com/youtube/answer/1722171?hl=en
Set pymol to correct aspect ratio for widescreen with 'viewport 1280,720'
- 2160p: 3840x2160
- 1440p: 2560x1440
- 1080p: 1920x1080
- 720p: 1280x720
Fiddle with your settings & make a movie, check scenes individually with 'ray' before setting 'ray trace frames', then save as PNG.
Generate libx264 mp4 file with ffmpeg:-
ffmpeg -framerate 30 -i 6x6x6_battenberg_50K_raytrace_spheres_%04d.png -s:v 1280x720 -c:v libx264 -profile:v high -crf 23 -pix_fmt yuv420p -r 30 youtube.mp4
'-crf' -> "constant rate factor"; preserves level of quality in scenes. Set to 18 for more or less perfect reproduction (i.e. when you've just spent a lot of CPU time making nice antialiased renders!). You seem to need to set it lower when your render is higher resolution, for a similar feel in quality.