1080i?
 

"The dog from that film you saw"
wrote in message ...

"Jan B" wrote in message
...
On Sat, 14 Feb 2009 09:19:21 -0500, "L Alpert"




In the USA, 720p is used by ABC, Fox Broadcasting Company and
ESPN
because the smoother image is desirable for fast-action sports
telecasts, whereas 1080i is used by CBS, NBC, HBO, Showtime and
Discovery HD due to the crisper picture particularly in
non-moving
shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used
for broadcast TV in the US.

Even when on Blu-ray, is actually recorded in 1080p, or is it
upscaled
to progressive scan output just like the original 480p DVD units?

The Blu-ray discs I have are stored either in 1080p/24 or 1080i/60.
That is, progressive in 24Hz or interlaced with half frames in 60
Hz.
/Jan






does the blu ray spec allow for 1080p at 60fps ? - would be useful
for discs of sporting events.

I guess it depends. Can enough data fit on a BR disc to support a
full length feature (2-3 hrs) at 1080p?

A european TV broadcast article about data rates. Note that US
broadcasts are at 60hz would contain about 20% more data....
http://www.televisionbroadcast.com/article/23408



--
Gareth.

that fly...... is your magic wand....