Question about 1080i v 1080p

[Deciazulado]

How discernable is 1080p over 1080i

[U4K61]

Originally Posted by Deciazulado

How discernable is 1080p over 1080i

Quite a bit if your TV is an older CRT type doing interlaced video. If there is motion, the vert. resolution is cut in half to 540 becasue the two fields may not match up. If your set is 1080p and does inverse 3:2 puldown correctly, then it is likely to less of an issue. Blu's native 1080p/24 is a plus over HD-DVD because it uses 1080i de-interlaced to 1080p with added notational overhead. This works, so they say. For me, it another reason HD-DVD is the clunker of the two formats.

[Aaron]

Originally Posted by Craig Ruchman

Quite a bit if your TV is an older CRT type doing interlaced video. If there is motion, the vert. resolution is cut in half to 540 becasue the two fields may not match up. If your set is 1080P and does inverse 3:2 puldown 'correctly', and that is a big if, then this is not an issue. Another plus for blu is that its video is native 1080p/24. HD-DVD uses 1080i de-interlaced to 1080p with added notational overhead. This works, so they say. For me, it another reason HD-DVD is the clunker of the two formats - go BLU!

Hehe, he was linking to similar thread.

[Semp1]

I have a Sony kdl40xbr2/3 1080p LCD I am telling you 1080p and 1080i are the exact same they use the exact amount of pixels and the difference is not recognizable if you have a 1080p display and it deinterlaces 1080i well that means the PQ will most likely be the same and possibly better than something set to 1080p, depending on whether the electornic you are using or the set deinterllaces better.

[U4K61]

Originally Posted by Semp1

I have a Sony kdl40xbr2/3 1080p LCD I am telling you 1080p and 1080i are the exact same they use the exact amount of pixels and the difference is not recognizable if you have a 1080p display and it deinterlaces 1080i well that means the PQ will most likely be the same and possibly better than something set to 1080p, depending on whether the electornic you are using or the set deinterllaces better.

Careful on 1080i vs 1080p sorced from 24fps film. Spatial resolution, yes, temperal, no. 1080i has more overhead then native 1080p/24. 1080i is 30fps @ 2 fields per frame. The 6 extra frames is wasted space. Sadly, the broadcast world is slow to get out of an analogue interlaced mind set in a progressive digital one. We would get a better PQ and have some extra bandwith left over.

At the beginning of HD, 1080i/60 was a digital signal for analogue CRT's timed to 60 cycle AC. The new system back then has become legacy next to our 1080p 120Hz progressive scan TVs.

[gand41f]

Originally Posted by Semp1

I have a Sony kdl40xbr2/3 1080p LCD I am telling you 1080p and 1080i are the exact same they use the exact amount of pixels and the difference is not recognizable if you have a 1080p display and it deinterlaces 1080i well that means the PQ will most likely be the same and possibly better than something set to 1080p, depending on whether the electornic you are using or the set deinterllaces better.

Nope, not the same for film-based content. Your LCD fails the 3:2 cadence test:

http://www.hometheatermag.com/hookmeup/1106hook/

You should be feeding 1080p for film-based content.

Looks like it can deinterlace non-film based content fine as long as you don't leave it at the factory default, though.

enjoy
gandalf

[Maxell]

1080p looks more smoother. I usually see more artifact with 1080i sources.