Making a movie

Making a movie: 

Making a movie Lisbon Workshop October 2006 John Allison University of Manchester

These movies were made with mpeg2encode (http://www.mpeg.org/)See Application Developer Guide, Visualization, Making A Movie (from next release): 

These movies were made with mpeg2encode (http://www.mpeg.org/) See Application Developer Guide, Visualization, Making A Movie (from next release)

Slide3: 

Mpeg files If this presentation doesn’t run on your computer The movies can be downloaded from http://www.hep.man.ac.uk/u/johna/pub/Geant4/Movies/ Individual files are indicated on relevant slides Get a Mac

Method: 

Method Produce lots of files; for example /vis/oglx/set/printEPS true /control/loop movie.loop theta 0 360 1 where movie.loop is /vis/viewer/set/viewpointThetaPhi {theta} 30 /vis/viewer/zoom 1.005 /vis/viewer/update Convert to ppm files for mpeg2encode for i in G4OpenGL*eps; do j=`basename $i .eps`; convert $i $j.ppm; done

mpeg2encode parameter file: 

mpeg2encode parameter file I found a helpful shell script make_mpeg2encode_parfile.sh G4OpenGL_*eps Edit resulting mpeg2encode.par 2 /* input picture file format: 2=*.ppm */ 1 /* aspect_ratio_information 1=square */ Encode mpeg2encode mpeg2encode.par G4OpenGL.mpg Very messy and time consuming Documented in next release

Quality: 

Quality Quality disappointing No reason why mpeg2 should be so poor 50 parameters; not learnt how to drive Or buy QuickTime Pro (Windows and Mac) Not expensive (£20) Convert to gif and File-andgt;Open Image Sequence Export to mpeg4 Much superior quality

Slide7: 

DAWNFILE produces prim files, dawn converts to eps files, convert (Image Magick) converts to ppm files for input to mpeg2encode. DAWN.mpg

Slide8: 

/vis/oglx/set/printEPS A collection of shapes Some artifices of 'painter’s algorithm' Text lost in printEPS at present

Slide9: 

RayTracer Notice cyan shape not currently renderable in other drivers Transparency respected Took 3 days CPU time g4RayTracer.mpg