[MPlayer-users] A little OT: 720x576 or 768x576?

[Tuukka Toivonen]

On Sat, 31 May 2003, D Richard Felker III wrote:

>PAL format is 576 lines (approximately) visible at 25 fps. It's a
>continuous analog signal, so there is no horizontal resolution per se,

Yes, but ITU-R BT.601 digital video standard defines that digitized PAL
signal line length is 864 for PAL/SECAM (858 for NTSC) for aspect ratio 4:3
(for 16:9 there's a different amount of pixels). There's 625 lines for PAL
(525 lines for NTSC).

However, some of these pixels lay outside of active image area, the visible
area is 720x576 for PAL (720x480 for NTSC).

Then again, I'm not sure how relevant is this (is your capture card
BT.601-compliant?).

Ref: Yao Wang et al: "Video processing and communications"