[MPlayer-users] Re: PAL interlacing

[Tobias Diedrich]

Vladimir Mosgalin wrote:
> Can somebody please explain how PAL video is interlaced? I searched on
> this a little, but it seems that almost everyone is writing about 50fps
> video for the TV. I want to know, what is found on regular 25fps
> DVDs with every frame (or every second frame) interlaced?

Theres no difference. 50fps here refers to fields, while 25fps refers to
frames (combined top+bottom field).

> Pattern in source film is (T1 B1) (T2 B2) (T3 B3) (T4 B4), speeded up to
> 25fps; how exactly 25 fps interlaced video is produced from it? Is there
> way to reverse it without deinterlacing?

Film (23.976fps) is often converted to PAL dvd by speeding it up by ~5
percent to get 25fps, so it should not be interlaced at all.

-- 
Tobias						PGP: http://9ac7e0bc.2ya.com
Be vigilant!