4 Images and Movies

Click Start Over at the left bottom to start Back to Contents

4.1 Install imagemagick at Ubuntu 18.04

Load pdb
Make initial image: File > Render > Tachyon
Use identify vmdscene.dat.tga to find image size: width x height + 0 + 0
Make tiff image: convert vmdscene.dat.tga -crop w x h + l + t -quality 100 -density 300 test.tiff

Notes: new image size: w x h; crop l(eft) margin; right margin $= (width - l)$; t(op) margin; bottom margin $= (height - t)$.

The command to convert pdf to jpeg

pdftoppm -singlefile -f 4(page number) -r 72(resolution) -jpeg -jpegopt quality=100 presentation.pdf outputname

I like to use the following tcl script.

proc make_rotation_animated_gif {} {

set frame 0

for {set i 0} {$i < 360} {incr i 20} {

set filename snap.[format "%04d" $frame].rgb 
            
render snapshot $filename 
          
incr frame  

rotate y by 20

}

exec convert -delay 10 -loop 4 snap.*.rgb movie.gif

exec rm -f snap.*.rgb

}