🚀 go-pugleaf

In article <=zrmcja.stever@netcom.com> (comp.sys.mac.apps), stever@netcom.com (Steve Riggins) writes:
> In article <D2150035.9ud57r@outpost.SF-Bay.org> peirce@outpost.SF-Bay.org (Michael Peirce) writes:
> >
> >> 
> >> A related question:  The compression of each frame by itself will give you
> >> quite a bit of savings in file size, but as is the case with the new proposed
> >> Digital TV standards, the real savings come when you start encoding only
> >> inter-frame differences or only the difference between what you predict to be
> >> the next image to be and what it actually is.  Are any of these compression
> >> techniques available for making movies from PICS?
> >
> >QuickTime movies *do* use temporal compression (though you can turn
> >this off you you really want to).  
> >
> >Apple had a utility called "Convert To Movie" on the QuickTime developer
> >CD-ROM that would convert a PICS file to a QuickTime movie.
> >
> >My product Smoothie can take a folder filled with PICT files and put
> >them all into a QuickTime movie - each PICT file making a new frame.
> >(And if the files have object oriented pictures in them, Smoothie
> >will do a nice job anti-aliasing them too).
> >
> >--  Michael Peirce      --   peirce@outpost.SF-Bay.org
> 
> Michael,
>   As of this writing, only the video compressor uses temporal
> compression.  The other compressors are strictly spatial.
>
> Steve Riggins                  Internet: stever@netcom.com

They can use frame differencing though right?  I get substantially
smaller files with the graphics compressor with frame differencing
enabled.  I'm fuzzy on how frame differencing is different from temporal
compression.  Any good explainations out there?

--  Michael Peirce      --   peirce@outpost.SF-Bay.org
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