[mythtv-users] "JudderFree" and DVDs?

[Christopher Kerr]

On Mon, Aug 27, 2012 at 6:00 PM, Jean-Yves Avenard <jean-yves at avenard.org>wrote:

> On 26 August 2012 23:45, Brian J. Murrell <brian at interlinx.bc.ca> wrote:
> > I've followed the directions at
> > http://www.mythtv.org/wiki/User_Manual:JudderFree and I successfully see
> > my TV switch to 24fps when I play a video that is 24fps.
> >
> > However, when I play a(n NTSC) DVD my TV doesn't switch to 24fps to play
> > the DVD title in it's native, progressive 24fps format.  Is this
> > supposed to work?
>
> DVD aren't 24fps.
>
> They are 50 or 60Hz (59.94 exactly) interlaced respectively.
>

Except that they aren't always, in the US - something that escapes us here
in the PAL territories is that NTSC DVD's are often authored with the main
program in 24p. The DVD player applies 3:2 pulldown on output to produce a
60i stream if progressive scan isn't forced.

- Chris
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