Thanks to all your help!!!
I finally was able to create a very sexy video using mplayer
mencoder "mf://data/p*.png" -mf fps=40 -o particle.avi -ovc lavc
The main problem was that I had to compile and install a bunch of
libraries (starting from libpng) on our (SuSE!!!) Linux Cluster
(which is no fun compared to a Debian based Linux system). I don't
know how people could work on this machine before.
I now have a very nice workflow: Running the simulation, let gnuplot
create png images instead of gif, create the movie with mencoder ...
I will also try to realize the idea of Glenn to use a MNG:
Mpeg might not be too good for images from a numerical simulation. If
it contains lines and sharp boundaries, the lossy compression of Mpeg
will not look good and will not compress well.
I would use MNG, and make a large tiled image, like a microfiche
film, containing all 6000
images in one PNG file, with MOVE and CLIP instructions to display
each tile in sequence.
While I don't know much about image processing (as you already have
noticed) I know that jpeg dumps high frequencies due to the cosine
transform. So that's why gif and png I better for my plots. That's
the reason I wanted to avoid mpeg at all. However, I am surprised
that the smearing effects are not as bad as I expected, you can see
them in the particle video only if you zoom in (so good enough for a
presentation using an old beamer):
http://www.mathematik.uni-ulm.de/~lehn/particle.avi
http://www.mathematik.uni-ulm.de/~lehn/temperature.avi
I will continue to investigate on this further. Once I succeeded I
will write and publish some instructions for other dummies like me ;-)
Thanks again to all of you,
Michael
Am 03.11.2007 um 00:06 schrieb d.henman:
I should think that newer mpeg-4 encoded series, would save the
most amount of space, if there isn't much change between frames.
It should also be good enough for numerical lines. Does mpeg-4
have a level of compression or option...
regards
I would suggest another image format. How about generating a movie
file, such as mpeg? You'll save a *huge* amount of space. Plus,
if you
encode correctly, you'll be able to seek backwards and forwards in
your file.
Mpeg might not be too good for images from a numerical
simulation. If
it contains lines and sharp boundaries, the lossy compression of Mpeg
will not look good and will not compress well.
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