Heard Something Weird But Is It True?? - Blu-ray Forum

Police 427 · 07-13-2007, 11:23 PM

I was asking the Store I bought my HDTV 52 inch JVC rear projection and I asked him what format it displays in and he told me 720p and I said but advise him my blu ray is showing in 1080i and I ask him which is better 720p or 1080i and he said 720p. And i was wondering is this a true statement or is he full of. Thanks for you info.

Blus Brother · 07-13-2007, 11:26 PM

no

ReduxInflux · 07-13-2007, 11:27 PM

5 - 9 = (x)4

answer = x

raginranger · 07-15-2007, 02:11 AM

hey,

I have a PS3 and a TV that is capable of 720p and 1080i, and I prefer 1080i. Although progressive is a better method than interlaced, all the extra lines of resolution you get with 1080 over 720 really really help the picture. I think 1080i is definitely the way to go unless you have the funds to get a 1080p set.

just my two cents...

cheto2k7 · 07-15-2007, 02:41 AM

Quote:

Originally Posted by Police 427

I was asking the Store I bought my HDTV 52 inch JVC rear projection and I asked him what format it displays in and he told me 720p and I said but advise him my blu ray is showing in 1080i and I ask him which is better 720p or 1080i and he said 720p. And i was wondering is this a true statement or is he full of. Thanks for you info.

The store clerk lied to you, point blank!! I pretty sure he knows the difference between the two. I would get a 2nd opinion from a different store clerk.

Tulsa · 07-15-2007, 03:13 AM

780P gives you 780 lines of resolution shown at 1/30th of a second, drawn one line right after the other, giving it 30fps. 1080i draws 540 lines of resolution shown at 1/60th of a second but drawn every other line. Then it redraws the screen on the lines it didn't draw the first time but the screens are not shown simultaneously. These two 1/60th of a second images gives the 1080i their 30 fps. Your brain merges the two quite nicely but it's still just 540 individual lines of resolution, x2.

Certainly 720p is better for sports than 1080i and other fast moving programs.

raginranger · 07-15-2007, 03:46 AM

yeah that's probably true, but I have found 1080i to be a better resolution for movies.

Overall, it's not a big problem though. If you buy a set advertised as doing 720p, it also does 1080i. So just buy the tv, and then test it out for yourself, and see which resolution you prefer.

baccusboy · 07-15-2007, 03:51 AM

1080i hands down.

My eyes don't lie.

Give me a blind test, and I'll pick 1080i every time.

And actually, I'll bet you my bottom dollar that your 1080i set is actually a 768 line set (1366x768). It's downscaling the 1080i signal, and upscaling the 720p signal coming in.

WickyWoo · 07-15-2007, 04:04 AM

Given that your set is 720p, it really doesn't matter which yo urun, in fact you should set it to 720p so you're getting a native res signal and eliminating downconversion artifacts

Branden · 07-15-2007, 04:43 AM

comparing progressive to interlaced is a bit like comparing apples to oranges. progressive signals (480p, 720p, 1080p) are native to HDTVs and as such are technically superior to interlaced signals. 480p>480i, 720p>720i, 1080p>1080i, but saying 720p>1080i or 1080i>720p.....
switch back and forth, see what you like best on your TV.

Frode · 07-15-2007, 12:00 PM

If your set is 720P as he claims (it would help if you gave us the model number), if you can, stick to 720P for the source. That means you get the least amount of scaling and no deinterlacing processing being done on the signal.

Police 427 · 07-15-2007, 01:40 PM

ya well i would but i do this normally at work and i didnt bring my tv with me lol but ill get that number and maybe the store worker is even wrong and its a 1080i instead hard to tell.

Police 427 · 07-15-2007, 01:59 PM

Called the wife and the JVC HD S# is HD52Z585

Frode · 07-15-2007, 02:45 PM

Yeah that's a 720P D-ILA set. Stick with 720P and you're golden.

BBKat32 · 07-15-2007, 03:18 PM

It's up to your source + your tv + your eyes.....compare them, see what you think is better. It's a matter of having 1080 interlaced lines refreshed (odds then evens) or 720 lines refreshed all at once.

Frode · 07-15-2007, 04:46 PM

Quote:

Originally Posted by BBKat32

It's a matter of having 1080 interlaced lines refreshed (odds then evens) or 720 lines refreshed all at once.

No it's not. It's a fixed resolution progressive display - it can't display interlaced. If you feed it 1080i it'll first be deinterlaced to 1080p, and then scaled down to 720P. Alternatively it'll be deinterlaced to 540P and then scaled to 720P, which some sets do unfortunately. If you feed it 720P from a blu-ray player it'll be 1080P scaled down to 720P which is a process that incurs less loss than the others mentioned.

The Don · 07-15-2007, 06:29 PM

each one favors it's own territory and gets beat by the other when it tries to cross boundaries...

IMO...this is how it is...

720p = fast paced action
1080i = slow paced action

if you watch sports at 1080i, you won't get the best results....which is why ESPN and ABC broadcast in 720p and all the movie stations prefer 1080i..

dakota81 · 07-15-2007, 08:00 PM

If you have a 1080i set, then the debate between 720p & 1080i is warranted.

But if the max resolution of the set is 1280x720 as the first post indicates, why would you rather input 1080i and have the tv downscale the picture? Doesn't make any sense. Stick to 720p.

LCD sets are 1366x768 where it can display the more information in a 1080i signal, but rear projection sets should be fixed at 1280x720 max. Use 720p.

Or, when you get the set home, try both and use whatever you prefer. Doesn't really matter.

07-13-2007, 11:23 PM	#1
Police 427 Member Member since:Jul 2007 Location:Ohio Blu-ray reviews:8	Heard Something Weird But Is It True?? I was asking the Store I bought my HDTV 52 inch JVC rear projection and I asked him what format it displays in and he told me 720p and I said but advise him my blu ray is showing in 1080i and I ask him which is better 720p or 1080i and he said 720p. And i was wondering is this a true statement or is he full of. Thanks for you info.

07-13-2007, 11:27 PM	#3
ReduxInflux Expert Member Member since:Jun 2007 Location:orange county, ca Blu-ray reviews:22 Trading Score:3	5 - 9 = (x)4 answer = x Last edited by ReduxInflux; 07-13-2007 at 11:35 PM.

07-15-2007, 03:13 AM	#6
Tulsa Active Member Member since:Jul 2007	780P gives you 780 lines of resolution shown at 1/30th of a second, drawn one line right after the other, giving it 30fps. 1080i draws 540 lines of resolution shown at 1/60th of a second but drawn every other line. Then it redraws the screen on the lines it didn't draw the first time but the screens are not shown simultaneously. These two 1/60th of a second images gives the 1080i their 30 fps. Your brain merges the two quite nicely but it's still just 540 individual lines of resolution, x2. Certainly 720p is better for sports than 1080i and other fast moving programs. Last edited by Tulsa; 07-15-2007 at 03:16 AM.

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07-13-2007, 11:26 PM	#2
Blus Brother Senior Member Member since:Jun 2007	no

07-15-2007, 02:11 AM	#4
raginranger Senior Member Member since:Jul 2007 Blu-ray reviews:2 Trading Score:5	hey, I have a PS3 and a TV that is capable of 720p and 1080i, and I prefer 1080i. Although progressive is a better method than interlaced, all the extra lines of resolution you get with 1080 over 720 really really help the picture. I think 1080i is definitely the way to go unless you have the funds to get a 1080p set. just my two cents...

07-15-2007, 03:46 AM	#7
raginranger Senior Member Member since:Jul 2007 Blu-ray reviews:2 Trading Score:5	yeah that's probably true, but I have found 1080i to be a better resolution for movies. Overall, it's not a big problem though. If you buy a set advertised as doing 720p, it also does 1080i. So just buy the tv, and then test it out for yourself, and see which resolution you prefer.

07-15-2007, 03:51 AM	#8
baccusboy Banned Member since:Feb 2007 Location:South Korea Blu-ray reviews:3	1080i hands down. My eyes don't lie. Give me a blind test, and I'll pick 1080i every time. And actually, I'll bet you my bottom dollar that your 1080i set is actually a 768 line set (1366x768). It's downscaling the 1080i signal, and upscaling the 720p signal coming in.

07-15-2007, 04:04 AM	#9
WickyWoo Blu-ray Champion Member since:May 2007 Trading Score:2	Given that your set is 720p, it really doesn't matter which yo urun, in fact you should set it to 720p so you're getting a native res signal and eliminating downconversion artifacts

07-15-2007, 04:43 AM	#10
Branden Senior Member Member since:Jun 2007 Location:Calgary, Alberta 4K collection:28 Blu-ray collection:558	comparing progressive to interlaced is a bit like comparing apples to oranges. progressive signals (480p, 720p, 1080p) are native to HDTVs and as such are technically superior to interlaced signals. 480p>480i, 720p>720i, 1080p>1080i, but saying 720p>1080i or 1080i>720p..... switch back and forth, see what you like best on your TV.

07-15-2007, 12:00 PM	#11
Frode Special Member Member since:Feb 2007	If your set is 720P as he claims (it would help if you gave us the model number), if you can, stick to 720P for the source. That means you get the least amount of scaling and no deinterlacing processing being done on the signal.

07-15-2007, 01:40 PM	#12
Police 427 Member Member since:Jul 2007 Location:Ohio Blu-ray reviews:8	ya well i would but i do this normally at work and i didnt bring my tv with me lol but ill get that number and maybe the store worker is even wrong and its a 1080i instead hard to tell.

07-15-2007, 01:59 PM	#13
Police 427 Member Member since:Jul 2007 Location:Ohio Blu-ray reviews:8	Called the wife and the JVC HD S# is HD52Z585

07-15-2007, 02:45 PM	#14
Frode Special Member Member since:Feb 2007	Yeah that's a 720P D-ILA set. Stick with 720P and you're golden.

07-15-2007, 03:18 PM	#15
BBKat32 Junior Member Member since:Jul 2007 Location:Ft.Wayne, IN	It's up to your source + your tv + your eyes.....compare them, see what you think is better. It's a matter of having 1080 interlaced lines refreshed (odds then evens) or 720 lines refreshed all at once.

07-15-2007, 06:29 PM	#17
The Don Blu-ray Ninja Member since:Apr 2006 Blu-ray reviews:12 Trading Score:2	each one favors it's own territory and gets beat by the other when it tries to cross boundaries... IMO...this is how it is... 720p = fast paced action 1080i = slow paced action if you watch sports at 1080i, you won't get the best results....which is why ESPN and ABC broadcast in 720p and all the movie stations prefer 1080i..

07-15-2007, 08:00 PM	#18
dakota81 Expert Member Member since:Apr 2007	If you have a 1080i set, then the debate between 720p & 1080i is warranted. But if the max resolution of the set is 1280x720 as the first post indicates, why would you rather input 1080i and have the tv downscale the picture? Doesn't make any sense. Stick to 720p. LCD sets are 1366x768 where it can display the more information in a 1080i signal, but rear projection sets should be fixed at 1280x720 max. Use 720p. Or, when you get the set home, try both and use whatever you prefer. Doesn't really matter.

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