What the heck should I use for my resolution anyway???

[Iceman_II]

I have a really strange question, and looking for confirmation of my conclusion...

At 720p resolution, HDTV has 720 pixels by 1280 pixels, or 921,600 total pixels

At 1080i, HTDV is 1080 by 1920, or 2,073.600 total pixels

My freakin' Sony KF-60WE610 only has 1,092,168 pixels in the LCD panel.

The set takes a 1080i input, but unless I am missing my guess, it is downscaling it to fit the screen, which is at most 784 by 1093 (based on 1,092,168 pixels)

WTF is up with that????!!!!????

Seeing as there are definate advantages to progressive rather than interlaced feeds, should I say screw it to having the TV downscale the 1080 input; swallow my pride, and go to a straight up 720p input, and at least take advantage of the progressive aspect of the signal?

What do you all think? (other than get a new TV that is... granted, I have had it for about 3 years, so its getting to be time )

Thanks,
Scott

[shamus]

It would be better for you to downconvert as opposed to upconvert. In other words 1080i!!!!

[Iceman_II]

Even considering the trade off of using an interlaced signal versus an honest to god progressive signal? hmmm

[JTK]

Originally Posted by Iceman_II

Even considering the trade off of using an interlaced signal versus an honest to god progressive signal? hmmm

Stay pro scan all the way. If I recall, your LCD's native rez is what? 1366X768?

EDIt: I checked it. Yes, it's 1366X768, progressive all the way.

So if you stick with 720p, your display is going to do a lot less chores for a clean upconversion from a 720p signal vs. having to downrez a 1080i interlaced signal.

It's a negligible upconversion if you input a 720p signal and there's no reason to go to interlaced. You always want to take "the path of least resistance."



Your display, being an LCD, is all digitial anyways which means it's just simply better to stay in progressive scan all the way and avoid any conversions to or from interlaced.

Honestly, try both and just go with whatever looks best to you. I would think avoiding an interlaced-progressive conversion would always be a plus on a digital display.

Going from 720p to 768p is almost nothing.

[Iceman_II]

Thanks Shamus and JTK, I appreciate the input. While my gut tells me to hell with 720p when 1080i is available, I guess it is not quite that simple.

I have also been doing a lot of research, seems that both ABC and ESPN use 720p, and even Fox, whose advertising is something to the effect of "the best HD available" runs 720p as well to avoid the whole de-interlacing issue.

The more I think about it, BDs are for the most part shot in 1080p, my TV only takes 1080i, so the player has to interlace it, and then the TV down converts and de-interlaces it to 768p, so we have interlacing, deinterlacing, and down-converting

If I input at 720p, the player downconverts from 1080p to 720p, and the TV upconverts from 720p to 768p

For BD, I guess it depends on which is lossier, interlacing at the player, de-interlacing at the TV, downconverting in the TV, downconverting in the player, or up converting at the TV... seems to me that anytime I can avoid interlacing and deinterlacing, there are two processes I can avoid in one fell swoop.

Its a whole lot easier for OTA and satelite, sence everything is native 720p anyway, it makes no sence to upconvert it to 1080i, only to deal with the whole p/i/p conversion and down converting any way.

At least that is the way I am understanding everything, If I got it wrong, please help me understand...

Thanks again!

Edit.... The more I mull it over, a new TV is closer in my future than I would have thought.... I guess a 60 in projection set will make a hell bedroom TV

[kavlito]

Check out this link... I think this will answer all your questions.

http://www.projectorcentral.com/hdtv_edtv.htm

[Deciazulado]

You could try watching selected Blu-ray scenes in both settings and see which one looks best..

Also, use movie AND live action Blu-rays in the evaluation.

Somehow I feel I've answered this question before somewhere...

[WriteSimply]

Originally Posted by Iceman_II

Its a whole lot easier for OTA and satelite, sence everything is native 720p anyway, it makes no sence to upconvert it to 1080i, only to deal with the whole p/i/p conversion and down converting any way.

Well not really. A 1080p D5 tape is easier to copy once a downconversion from 4K is done; by easier I mean, the 1080p tape is GOING to end up being used for BD authoring. Also studio cameras are 1080i. So channels that are native 720p are going to downconvert from that.

Technically lots more fudging of the video quality of HD channels happens before it gets to you.


fuad