Only the Lombard and Wallstreet PowerBooks have DVD
Decoding Hardware (and a few PowerMac G3).
The Pismo G3 and the PowerBook G4 have Software
Decoding.
Anyway, the ATI cards use other kind of video so you
can't take a picture of a movie when running DVD
Player.
VLC works different so you can take a snapshot.
For example, if you make a snapshot when running a
movie, you can choose that on Appearence as a Desktop
picture. You will have a movie running as a Desktop
Picture (it works on Lombard and Wallstreet at least).
If you put away the DVD, the Desktop picture will
become a brown box.
Really Strange.



--- Mikael Byström <[EMAIL PROTECTED]> wrote:

> Eugene, [EMAIL PROTECTED] said:
> 
> > But I think the main culprit may be the
> >video card bus: there might not be enough headroom
> to push the
> >amount of decoded DVD data from the CPU to the
> video card.
> 
> So why does it work with the OS 9 decoder ring in
> these machines? Is the
> decoder also a graphic booster item?
> 
> None of the answers this summer regarding playing
> DVDs on Powerbooks seem
> to make much sense. There seem to be some
> information missing.
> 
> I asked earlier why VLC and DVDplayer can play
> mounted DVD images fine
> with full screen support, but with .vob files from
> the same disc it fails
> completely. If these are reburnt to disc, they work
> again.
> 
> Why? If there is no hardware decoding as some have
> suggested, on what
> level does the MPEG2 software decoding work and why
> does it fail in some
> wrappings to decode MPEG2 effectively? I do have a
> hard time believing
> that there is no hardware decoding active in some
> models under OS X as
> the difference in performance results have been so
> staggering.
> 
> I also wonder why DVDplayer can't play over S-Video
> at all (Blank grey
> picture) on my Powerbook G4 / 400, but VLC can.
> S-video worked already
> with my PDQ.....
> 
> 
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