[Chimera-users] ppt and movies

Dougherty, Matthew T. matthewd at bcm.tmc.edu
Tue Nov 27 14:08:45 PST 2007

one of the primary problems has to do with the PC based powerpoint codec.
In the PC based powerpoint, the codec for mpeg is not the same code for windows!
they seemed to diverge many years ago and the PPT decoder is pretty limited; 
I only generate mpegs that are 640x480x24fps on PC PPTs; macs PPTs are fine including HD1080 spec.
there is a way around the problem on PC, but it is pretty twisted using embedded objects, and it has limitations.
vista+new powerpoint may have solved this.
Matthew Dougherty
National Center for Macromolecular Imaging
Baylor College of Medicine/Houston Texas USA


From: chimera-users-bounces at cgl.ucsf.edu on behalf of Thomas Goddard
Sent: Mon 11/26/2007 4:21 PM
To: Markus Voehler
Cc: chimera-users at cgl.ucsf.edu
Subject: Re: [Chimera-users] ppt and movies

Hi Markus,

   First I'd suggest that the best supported movie format on the Mac is
Quicktime, so you should use the Chimera movie command option "mformat
mov", or leave the mformat option out since quicktime is the default.

   As Damir mentioned sometimes movies play on one screen but not a
second one when two displays are used at the same time.  I haven't seen
that on a Mac but have on Linux.  I would not expect this to be
dependent on the movie format, but it is possible that some formats
allow simultaneous display at two screen resolutions while others don't.
  It would be worth testing some other movie not made in Chimera in
powerpoint in the same presentation to see if it is a specific problem
to the Chimera movie.

   To get higher resolution you want to record the movie with a larger
Chimera window.  If you are going to play the movie full screen in a
presentation than you need to record it with a large Chimera window so
it does not have to be blown up too much which would make it blocky.
The Chimera supersample option is just a way to smooth the appearance --
it doesn't increase the resolution.  The movie encoding bit rate also
does not increase the resolution -- it simply reduces the artifacts
introduced by compression such as halos around objects.

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