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fatjulio
90 posts

Master Geek


  #376808 5-Sep-2010 10:46
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Nety:
fatjulio: I'm glad they've changed. I enjoy the higher res. All the TV programs that are made in HD aren't interlaced, they're progressive. All it takes is the display to deinterlace it properly and you have full res 1080p.

TechnoGuy001 - the reason you're seeing blurry titles on the laptop could be it's not deinterlacing the image properly. Depends on what program you're using to view it with, though I don't know which ones are good or bad.

I've had a TV3 HD broadcast of Die Hard 4.0 playing on my 1080p projector on a 100 inch screen, it was crisp. 


I'm sorry but IMHO this is just not correct. It does not matter how good a job of deinterlacing your TV does it will never look anywhere near as good as 1080p. Saying that is a similar argument to trying to say that unscaled DVD looks a good as blu ray. Your TV is having to "guess" what information is in each of the missing lines and although a good deinterlacer can get better results it is still receiving almost the same amount of information as 720p.

There is a good article here on the 720p vers 1080i debate.

http://ezinearticles.com/?720p-Vs-1080i-HDTV&id=91443


You're talking about  if the source material is interlaced, not progressive. That only really happens with sport. HD tv programs are shot on film or digitally 1080p24, which are progressive. They are put into a 1080i format by inserting the whole frame into the 2 fields, which are recovered when deinterlacing to reassemble just the way they were, a full resolution 1080p frame.

You can do the same with a Blu ray player. Set the output to 1080i instead of 1080p and the display will reinterlace it to 1080p, no loss of resolution. 



bfginger
1268 posts

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  #376820 5-Sep-2010 11:12
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cyril7:
Accordingly, the Freeview transponders on Optus D1 can't even transmit HD, or so I'm informed. No other transponders are available for lease. That could change, but it's unlikely. If a new satellite goes in that slot, who knows.


Ummm, dont believe that is correct, all the transponders on D1 are the same perforamance and design, currently Sky use two of them in 8PSK mode without issues, HD could be inserted onto any of the current FV transport streams in current QPSK, wouldnt leave much capacity for much else.

Cyril


I think the Freeview platform should've gone for 87% terrestrial coverage at launch or soon after and done their satellite broadcast streams in MPEG-4 576i. The half measure way they've done things will cost more in the long run. Many people won't tolerate Freeview Satellite as it is and just subscribe to Sky HD.


It is less bandwidth-intensive to broadcast a movie at 1080p24 than 1080i60, since 20% less data would be transferred.


Broadcasting non movie / 24p content in 1080p24 would be impractical; nobody broadcasts in 1080p24 except some satellite movie pay TV stations. 24fps is going to be phased out for movies at some stage.  I don't think we'll see 1080p60 used until some point in the future when more powerful codecs and hardware are in use, and then only for pay TV operations where legacy support isn't an issue.


allstarnz
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  #377327 6-Sep-2010 23:38
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Freeview|HD TV2 is now 1080i, TV One is 720p still. Both TV One and TV2 are still 720p on Sky HDi



timbosan
2159 posts

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  #377360 7-Sep-2010 07:22
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All,

As I hope others (Cyril7?) etc say in more detail, this is not just about resolution but more about bandwidth - with the same frame rate 1080p takes TWICE the bandwidth of 1080i, hence 1080i is used for DVB-T.

Also, OTA transmissions have far less bandwidth than local sources such as Blu-ray, which is why the latter looks so much cleaner and sharper.

Plus there is the issue of compression of the source, and how well this compression has been done, which can have a major impact on the quality of the source, and poor compression and encoding can have a big impact on a picture, irrespective of 1080i vs. 720p


geekiegeek
2513 posts

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  #377376 7-Sep-2010 08:24
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I havent checked out TV2 in 1080i as yet but I know from watching TV3 that it causes a large amount of montion blur when watched on my projecter at around 100". TV1 720P looks much better.

I wonder if this is to do with the screen size making it seem worse or whether I may need to play around with my de-interlace settings (HTPC using PDVD10 codec).

Dingbatt
6756 posts

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  #377384 7-Sep-2010 08:53
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I run Mediaportal with StreamedMP skin to give Movies and TVseries plugins. While I know that TV2 is now 1080i, some TVSeries I have recorded are showing 1080p in the recording info, why would that be? How do these programs determine what is being received, is it part of the data stream?




“We’ve arranged a society based on science and technology, in which nobody understands anything about science technology. Carl Sagan 1996


k1wi
484 posts

Ultimate Geek


  #377498 7-Sep-2010 13:05
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Just a quick heads up for anyone interested in this area.

I'm told TV ONE will be switching to 1080 as well, I understand it will be tomorrow.

hdinsider
552 posts

Ultimate Geek


  #377504 7-Sep-2010 13:27

k1wi: Just a quick heads up for anyone interested in this area.

I'm told TV ONE will be switching to 1080 as well, I understand it will be tomorrow.


I wonder what brought on the change? Pressure from top management to go to "Full-HD" no doubt caused by TV sales hype...

When will they change the Sky platform TV1 and 2 to 1080i and how far away is Dolby?





don't mess with me.... i'm the hd insider....

geekiegeek
2513 posts

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  #377515 7-Sep-2010 13:45
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I'd rather have AC3 then 1080i personally.

lchiu7
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  #377531 7-Sep-2010 14:16
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I think TVNZ going AC3 was mentioned as being tested now and going into prod later this year but a TVNZ staff member. It can't be too soon.




Staying in Wellington. Check out my AirBnB in the Wellington CBD.  https://www.airbnb.co.nz/h/wellycbd  PM me and mention GZ to get a 15% discount and no AirBnB charges.


Nety
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  #377547 7-Sep-2010 15:01
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geekiegeek: I'd rather have AC3 then 1080i personally.


+1 well the AC3 part. I don't agree with going 1080i at all but looks like it is a done deal.







Media centre PC - Case Silverstone LC16M with 2 X 80mm AcoustiFan DustPROOF, MOBO Gigabyte MA785GT-UD3H, CPU AMD X2 240 under volted, RAM 4 Gig DDR3 1033, HDD 120Gig System/512Gig data, Tuners 2 X Hauppauge HVR-3000, 1 X HVR-2200, Video Palit GT 220, Sound Realtek 886A HD (onboard), Optical LiteOn DH-401S Blue-ray using TotalMedia Theatre Power Corsair VX Series, 450W ATX PSU OS Windows 7 x64

richms
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  #377551 7-Sep-2010 15:12
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If they take it AC3 it should be across the board IMO, AAC+ just sounds too bad on anything but a crap inbuilt TV speaker.




Richard rich.ms

allstarnz
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  #377596 7-Sep-2010 17:04
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yeah, this 720p to 1080i is nothing but window dressing in my opinion. Nobody other than us geeks have noticed. Even I wouldn't have had I not stumbled on this thread.

5.1 AC3 should have been done first

fahrenheit
757 posts

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  #377603 7-Sep-2010 17:20
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You can thank/blame 3D.

geekiegeek
2513 posts

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  #377616 7-Sep-2010 17:57
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fahrenheit: You can thank/blame 3D.


Why?

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