Is 768p a possibility? - Blu-ray Forum

Maxell · 10-15-2007, 01:16 AM

My LCD is 1366x768 as are a lot of LCD's. Why isn't this the standard or at least a possibilty when it comes to outputting video? It's a pretty small difference to 1280x720, but that's still a few pixels that aren't being used or possibly used weirdly. For us a 1080p blu down converts to 1280x720 in which then my tv converts up to fill the screen at 1366x768. That's a lot of converting!

bootman · 10-15-2007, 02:29 AM

Quote:

Originally Posted by Maxell

My LCD is 1366x768 as are a lot of LCD's. Why isn't this the standard or at least a possibilty when it comes to outputting video? It's a pretty small difference to 1280x720, but that's still a few pixels that aren't being used or possibly used weirdly. For us a 1080p blu down converts to 1280x720 in which then my tv converts up to fill the screen at 1366x768. That's a lot of converting!

You are correct.
It is this very reason dedicated scalers are popular and in this case help improve the picture.

aristotles · 10-15-2007, 02:32 AM

Alternatively you could just save up a while and get a 1080p display.

blublublu · 10-15-2007, 02:36 AM

Quote:

Originally Posted by Maxell

My LCD is 1366x768 as are a lot of LCD's. Why isn't this the standard or at least a possibilty when it comes to outputting video? It's a pretty small difference to 1280x720, but that's still a few pixels that aren't being used or possibly used weirdly. For us a 1080p blu down converts to 1280x720 in which then my tv converts up to fill the screen at 1366x768. That's a lot of converting!

Can you actually send 1366x768 over HDMI or component video?

BTBuck1 · 10-15-2007, 02:39 AM

set your device (BD Player, Cable box, etc.) to output 1080i. This way your TV takes the 1080i and converts it to 1366x768. You should get more out of your set this way.

Maxell · 10-15-2007, 02:51 AM

actually it looks worse when I output to 1080i. It really looks like a shrunk down digital image where as 720p looks a bit more natural.

gand41f · 10-15-2007, 02:52 AM

Quote:

Originally Posted by BTBuck1

set your device (BD Player, Cable box, etc.) to output 1080i. This way your TV takes the 1080i and converts it to 1366x768. You should get more out of your set this way.

At least for Blu-ray players this is not true. Most TVs don't handle filmed-based content in 1080i60 correctly. See the "3:2 Tests" in the link below:

http://hdguru.com/?p=187

It will probably look better to send 720p to your display. I don't know of any Blu-ray players that do a bad job of 1080p24 -> 720p60 conversion, and unless your TV is one of the very early generation HDTVs that first converted everything to 1080i60 internally, 720p60 -> 768p60 is a simple scaling they can't screw up.

enjoy
gandalf

gand41f · 10-15-2007, 02:53 AM

Quote:

Originally Posted by Maxell

actually it looks worse when I output to 1080i. It really looks like a shrunk down digital image where as 720p looks a bit more natural.

Oops, you already replied when I was writing my message. See post #7 above for an explanation on why it is.

enjoy
gandalf

Maxell · 10-15-2007, 02:59 AM

I cant buy another tv yet. I'm still paying this one off! Besides I only want a 32"-37" and I got my tv before the Sharp 1080p's came out or were somewhat affordable.

U4K61 · 10-15-2007, 03:16 AM

Quote:

Originally Posted by blublublu

Can you actually send 1366x768 over HDMI or component video?

Odd that variable scan rates are so hard and expensive to do on a TV, yet they have been done for years on a PC. High end 20" and 21" CRT monitors offer numerous resolutions, even above 1920X1080p. My old 1993 19" Gateway crystal scan went from 640x460 VGA to 1600x1200 UXGA I have to be careful on what I send to my TV from a computer, otherwise I loose the picture an have to reboot in windows safe mode and change the video settings to a lower resolution. Part of this was said to have been a lack of communication between developers of TVs and computer screens, even if they worked withen the same company.

LynxFX · 10-15-2007, 04:01 AM

Quote:

Originally Posted by Maxell

My LCD is 1366x768 as are a lot of LCD's. Why isn't this the standard

Because it never was a standard. The tv manufacturers created it out of thin air. Some claim it was to compensate for overscan, some say it was part of marketing to be able to say 'we have more resolution than those 1280x720 tv's.' Mostly it is just a pain in the ass and I gladly bipassed this resolution.

Behemoko · 10-15-2007, 04:07 AM

If it helps, I set mine to output 1080p to my 768p tv, so mine only does the downconverting to 768p, so I am actually getting a better pic that standard 720p displays. :-) If you can set your output to 768p, I suggest you do.

richieb1971 · 10-15-2007, 05:33 AM

TV's are about affordability. No point making every TV $4000 and next to perfect because nobody will buy it. Unfortunately most peoples first HD experience is going to be on crappy TV's. £400-$800 is still mass market.

10-15-2007, 01:16 AM	#1
Maxell Expert Member Member since:Aug 2007	Is 768p a possibility? My LCD is 1366x768 as are a lot of LCD's. Why isn't this the standard or at least a possibilty when it comes to outputting video? It's a pretty small difference to 1280x720, but that's still a few pixels that aren't being used or possibly used weirdly. For us a 1080p blu down converts to 1280x720 in which then my tv converts up to fill the screen at 1366x768. That's a lot of converting!

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10-15-2007, 02:32 AM	#3
aristotles Expert Member Member since:Aug 2007 Location:Canada Blu-ray collection:401 Blu-ray reviews:1	Alternatively you could just save up a while and get a 1080p display.

10-15-2007, 02:39 AM	#5
BTBuck1 Blu-ray Samurai Member since:Jun 2006 Location:Oceanside, CA. Blu-ray collection:507 DVD collection:1 Digital collection:1	set your device (BD Player, Cable box, etc.) to output 1080i. This way your TV takes the 1080i and converts it to 1366x768. You should get more out of your set this way.

10-15-2007, 02:51 AM	#6
Maxell Expert Member Member since:Aug 2007	actually it looks worse when I output to 1080i. It really looks like a shrunk down digital image where as 720p looks a bit more natural.

10-15-2007, 02:59 AM	#9
Maxell Expert Member Member since:Aug 2007	I cant buy another tv yet. I'm still paying this one off! Besides I only want a 32"-37" and I got my tv before the Sharp 1080p's came out or were somewhat affordable.

10-15-2007, 04:07 AM	#12
Behemoko Member Member since:Feb 2007	If it helps, I set mine to output 1080p to my 768p tv, so mine only does the downconverting to 768p, so I am actually getting a better pic that standard 720p displays. :-) If you can set your output to 768p, I suggest you do.

10-15-2007, 05:33 AM	#13
richieb1971 Blu-ray Samurai Top contributor Member since:Aug 2007 4K collection:78 Blu-ray collection:695 Trading Score:16	TV's are about affordability. No point making every TV $4000 and next to perfect because nobody will buy it. Unfortunately most peoples first HD experience is going to be on crappy TV's. £400-$800 is still mass market.

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