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My animations have previously been massively bloated, taking up huge amounts
of disk space for even short movies.
Last night I hit upon a straight forward way of slimming them.
Up until now I've been building my animations from BMP files, but if I
convert all of my images to JPG first, the resulting animation is at least
2/3 smaller! ( It also runs smoother )
Just thought I'd share.
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"Josh" <s### [at] a com> wrote:
> My animations have previously been massively bloated, taking up huge amounts
> of disk space for even short movies.
>
> Last night I hit upon a straight forward way of slimming them.
>
> Up until now I've been building my animations from BMP files, but if I
> convert all of my images to JPG first, the resulting animation is at least
> 2/3 smaller! ( It also runs smoother )
>
> Just thought I'd share.
it looks like the simply a sequence of all the input images, without any
further compression. This works ok, and is even usable when jpg's are used.
But there are mutch more advanced video formats. thay achieve mutch better
compression by re-using data from the previous frame, so all static parts of
the animation are compressed to almost nothing. the most advanced (like xvid
and theora) can even translate and stretch parts of the previous frame, so
parts of previous frames can be re-used even if everything is changing.
I recomend using some software to convert your (probably avi) files to
mpeg. everyone oaround here seems to be able to play mpeg, and mpeg uses
good compression, and the result is independent from the input format, so
you can just keep jusing bmp's (or png's)
using loosless compression (like jpg) is best avoided, becouse when
converting to mpeg, you end up with two layers of looseles compression,
so the resulting file will be both less quality and bigger :-(
So use bmp or png (or _very_ high quality jpg's), so the only compression
will be coused by the mpeg conversion.
if you run windows, the free http://www.irfanview.com/ program has a very
flexible and fast batch processing mode, for converting or edditing a large
set of images with a few mouse clicks.
can anyone recomend a good bmp/png -> mpeg program ?
jaap.
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> can anyone recomend a good bmp/png -> mpeg program ?
>
> jaap.
Yes, I use Avi Creator, Version 1.5 is the latest, though I'm still using
1.0
After creating an AVI I use a standard Movie Editing Suite from Adobe or
Ulead for some more fancy editing.
http://www.bloodshed.net/avi.html
It only does BMP files though, so Irfanview would then be required if you
need to convert
James
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