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Posted by fwibbler on 12/11/06 23:13
Stroller <stroller@bigfoot.com> wrote:
> fwibbler wrote:
> > Stroller <stroller@bigfoot.com> wrote: ... Assuming it was this set (and
> > not some other DVD I was watching recently, it seemed to me (because I'm
> > a picky sod and tend to notice these things) that the PAL version is a
> > just a simple conversion of the NTSC version, thus it doesn't benefit
> > from the extra detail and clarity that the PAL format is capable of (576
> > lines compared to 480 lines NTSC) (in fact, it does indeed lose a tiny
> > bit of detail in the conversion as you have noticed).
>
> I see. Thanks for your help - that's exactly what I wanted to know.
>
> > That said, I'd still prefer the PAL format version as it doesn't have
> > the horrible motion judder of the NTSC format.
>
> Sorry - can you clarify this, please? Is motion judder a characteristic of
> NTSC?
>
Hmmm, AIUI,
Film is shot at 24 frames per second.
NTSC works by slowing this to 23.976fps and taking every 4th frame and
duplicating it. So for every 4 frames of footage, 5 frames get displayed.
this brings the frame rate up to 29.97fps.
This tends to lead to motion judder (not sure if that is the official term
for it)
Have a look at the motion of the Star Destroyer at the begining as it flys
overhead.
This is as I understand it. If anyone has greater knowledge, feel free to
correct me.
Cheers!
--
Graham
Website - http://www.thedeathzone.free-online.co.uk
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