720p, 1080i

[espectacular]

I was buying a tv yesterday at Best Buy and the size i was looking for seemed to all be 720, I asked the sales person if they had any smaller tvs in 1080 and she said, and I qoute

"720p is 1080i and then you have 1080p, the highest resolution"

Is this correct? Will a 720p tv automatically support 1080i? I know it won't do 1080p but I was under the impression it would not do 1080i either.

[Michael D'Angelo]

It will down convert 1080i to 720p. So it will display a picture that is 1080i but it will only be 720p.

[smiddy]

While it is an incorrect statement, I think the intent of what she said is that 720p and 1080i are relatively the same from a bandwidth perspective and instantanious pixels perspective. Most 720p televisions will do as BMoreRavens has said.

[Pinion413]

While it is an incorrect statement, I think the intent of what she said is that 720p and 1080i are relatively the same from a bandwidth perspective and instantanious pixels perspective. Most 720p televisions will do as BMoreRavens has said.

Hehe. You're giving the clerk a little more credit than she deserves methinks. :lol: I would more tend to think that she honestly thought 720p and 1080i were the same thing since most if not all 720p TV's accept 1080i. These people are generally not fully and/or properly trained in the specifics of such things in places like BB and CC. Not saying all are that way, just most I have encountered knew less than I did about the products they were trying to sell me. :grin:

To the OP, as BMoreRavens said, your 720p set will accept, de-interlace, and scale 1080i signals down to your TV's native resolution (generally either 1280x720p or 1366x768p).

And to the clerk's statement, 720p is not 1080i. :D

[turey22]

ok thank you very much. i also asked her that if i got a 1080p tv could i watch my blueray movies with componet she said yes. i later found out that no! you need hdmi cable to watch 1080p. this is her husband by the way, espectaculars.

[P Smith]

Interesting kulbit - what BR player and HD TV set you connected by component cable ? And how you found it wasn't in 1080p ? Pictures of the info screen will be very helpful. TIA.

[digital223]

I was buying a tv yesterday at Best Buy and the size i was looking for seemed to all be 720, I asked the sales person if they had any smaller tvs in 1080 and she said, and I qoute

"720p is 1080i and then you have 1080p, the highest resolution"

Is this correct? Will a 720p tv automatically support 1080i? I know it won't do 1080p but I was under the impression it would not do 1080i either.

which size hdtv are you looking for ?????

[bcab17]

which size hdtv are you looking for ?????

I think he may be looking for a 19" or 20". I just shopped for a small tv for our kitchen, and ALL of the 19" HD models that I saw (Sharp Aquos, Samsung, LG, Philips) were 720p.

[bcab17]

By the way, I do have a 720p-related question. If I set my HR-21 to output 480i, 480p, and 720p (but NOT 1080i), what will it do to the 1080i HD channels? I assume it down-converts them, but to what resolution? I would think it's 720p, but that would also involve deinterlacing 1080i as well as down-converting it, so I wonder if it may actually down-convert it all the way to 480i.

I just got an av receiver with a scaler that is known to do a great job of upconverting 480i, 480p, and 720p to 1080p, but it has problems deinterlacing 1080i to 1080p. So I'm wondering if it would be a mistake to have the HR-21 down-convert 1080i just so I can have the av receiver upconvert it to 1080p. Does that sound like a crazy idea?

[Michael D'Angelo]

By the way, I do have a 720p-related question. If I set my HR-21 to output 480i, 480p, and 720p (but NOT 1080i), what will it do to the 1080i HD channels? I assume it down-converts them, but to what resolution? I would think it's 720p, but that would also involve deinterlacing 1080i as well as down-converting it, so I wonder if it may actually down-convert it all the way to 480i.

It will down-convert to 720p.

[bcab17]

It will down-convert to 720p.

Thanks, BMR. Do you know, in general, if 1080i to 720p down-conversion causes any picture quality degredation?

[Michael D'Angelo]

Thanks, BMR. Do you know, in general, if 1080i to 720p down-conversion causes any picture quality degredation?

Not really sure. I have never used it that way.

[turey22]

Interesting kulbit - what BR player and HD TV set you connected by component cable ? And how you found it wasn't in 1080p ? Pictures of the info screen will be very helpful. TIA.

we have a ps3 and a 32 samsung tv, which is 720p but they had a 1080p which i am thinking of buying. (probably will when i can) The AACS has some sort of restrictions that will only give you 1080p output on a hdmi cable. ill try to find it and post it. i dont have pictures

[turey22]

because of the copyright protection on the images if you are using anything besides an hdmi cable with hdcp you will get either an error message or a lower resolution picture. if you are using hdmi to dvi connection then you will get no image, if you are using component cables it will downsize the resolution to something less than hd


http://en.wikipedia.org/wiki/High-bandwidth_Digital_Content_Protection

[digital223]

because of the copyright protection on the images if you are using anything besides an hdmi cable with hdcp you will get either an error message or a lower resolution picture. if you are using hdmi to dvi connection then you will get no image, if you are using component cables it will downsize the resolution to something less than hd




if i understand the above correctly.....a HDMI box would render HD at both TV1 and TV2 ?

[Austin316]

Alot of 720p sets also support 1080i but it not fact just a general rule.