|
|
Posted by The Other Guy on 12/23/05 00:49
Joshua Zyber wrote:
> "The Other Guy" <tog@null.void> wrote in message
> news:43aa2fdc@news.orcon.net.nz...
>
>>>All DVD video is stored in interlaced format. There is no such thing
>>>as a "progressive" DVD. Deinterlacing for progressive scan playback
>>>is a function of the DVD player or the TV.
>>
>>Sorry. I meant was the R1 disk 'film', i.e. 24fps versus native NTSC
>>(29.97).
>
>
> Well, again, all R1 DVDs are NTSC. All of them.
DVD supports three frame rates, including 24fps, with 3:2 pulldown done
by the player to give 29.97fps required for NTSC.
As film only runs at 24fps, storing on DVD at 24fps and having the
conversion done by the player means space is not wated on the interlaced
frames as these can be constructed during playback. Less bandwidth is
used to achieve the same image output. It also means they could be
output by players at 24fps if the gear supports it. This is where my
confusion with progressive scan came in, since 24fps displayed
progessively is where the best image quality would be achieved.
Progressively displaying NTSC achieves very little, since the interlaced
frames are part of the recording.
The Other Guy
Navigation:
[Reply to this message]
|