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virusc
Joined: 11 Apr 2007
Posts: 358
Location: Massachusetts
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| Posted: Wed Jun 24, 2015 10:32 pm Post subject: 4k blu-ray to 1080i? |
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Does anyone know how we could down rez the new 4k bluray 4k to 1080i/p for CRT projectors? Even though the resolution is lower I would like to take advantage of the higher color depth and down rez benefits.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Thu Jun 25, 2015 12:12 am Post subject: |
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What advantages???
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Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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tanwn1
Joined: 08 Dec 2014
Posts: 60
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| Posted: Thu Jun 25, 2015 5:40 am Post subject: |
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Yah what advantages???? You might as well go digital.
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pj-toso
Joined: 19 Mar 2015
Posts: 69
Location: Norway - Oppland
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| Posted: Thu Jun 25, 2015 9:39 pm Post subject: |
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UHD BD will have better color-depth, encoded with high bitrates and better codec, so even downrezed, it should look better than regular bd outputted to 1080i.
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Disclaimer: My postings are subjective and not facts.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Fri Jun 26, 2015 10:56 am Post subject: |
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No... It wont.
_________________
Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Fri Jun 26, 2015 9:37 pm Post subject: |
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| CasetheCorvetteman wrote: | | No... It wont. |
Yes it will, even if only the 4:2:0 color sampling is changed to 4:4:4, every display can make advantage of that, ditto for color depth.
_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Jun 27, 2015 7:48 am Post subject: |
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Where does it say UHD Bluray is 4:4:4? Im under the impression it is still only 4:2:0...
_________________
Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sat Jun 27, 2015 8:38 am Post subject: |
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| CasetheCorvetteman wrote: | | Where does it say UHD Bluray is 4:4:4? Im under the impression it is still only 4:2:0... |
No, the whole Rec. 2020 color space thing was also laid in the UHD standard, which implies the option of the wider gamut, and the 4:4:4 color subsampling as well.
_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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ElTopo
Joined: 07 Nov 2006
Posts: 1640
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| Posted: Sat Jun 27, 2015 11:55 am Post subject: |
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It would be better to have 4K interlaced.
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Barco Cine 9 the one and only
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sun Jun 28, 2015 12:03 am Post subject: |
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| ElTopo wrote: | | It would be better to have 4K interlaced. |
But why??? Its not 4096 wide, its only 3840, so why bother with 4k at all?
_________________
Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sun Jun 28, 2015 12:05 am Post subject: |
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| gjaky wrote: | | CasetheCorvetteman wrote: | | Where does it say UHD Bluray is 4:4:4? Im under the impression it is still only 4:2:0... |
No, the whole Rec. 2020 color space thing was also laid in the UHD standard, which implies the option of the wider gamut, and the 4:4:4 color subsampling as well. |
Have you seen specs set in stone to indicate this? My monitor supports that, but will source devices use it?
_________________
Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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virusc
Joined: 11 Apr 2007
Posts: 358
Location: Massachusetts
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| Posted: Mon Jun 29, 2015 11:38 am Post subject: |
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4k blu ray is 4:2:2
I had a 2nd gen Panasonic plasma 480p and I can tell you that 1080i looked hugely better than 480p sources. I don't feel like spending 10k on a 4k digital that may not even be compatible with 4k content.
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Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
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| Posted: Mon Jun 29, 2015 2:16 pm Post subject: |
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I haven't kept up that much, but even with a wider color gamut how are you planning on displaying the wider color gamut on a CRT?
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ElTopo
Joined: 07 Nov 2006
Posts: 1640
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| Posted: Mon Jun 29, 2015 3:41 pm Post subject: |
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4K interlaced on CRT to have full resolution and saving bandwidth.
_________________
Barco Cine 9 the one and only
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virusc
Joined: 11 Apr 2007
Posts: 358
Location: Massachusetts
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| Posted: Mon Jun 29, 2015 4:42 pm Post subject: |
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If the signal is 4:2:2 and the hdmi to vga adapter works I would think that the color primaries would have better transition with more steps and color resolution. But will any of the adapters or players even output 1080 anything?
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Tue Jun 30, 2015 2:54 am Post subject: |
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| ElTopo wrote: | | 4K interlaced on CRT to have full resolution and saving bandwidth. |
Ill ask you again, why do you want to display 4096x2160 when the UHD format is only 3840x2160??
What is being discussed is NOT 4K anything at all, it is UHD, and the two are vastly different.
I know that Samdung are wanking off calling their sh*t 4K incorrectly, but its not, its only UHD, and comsumers all over the world a just about thick enough to think its the same thing.
Either way, have you actually tried to display 3840x2160i on your Barco?? Because i dont reckon youll be happy with it. The 2160 lines wont be so bad interlaced, but if you think its not going to choke serverely on 3840 pixels wide, you got another thing commin.
As for saving bandwidth...  You dont have enough for 1920x1080, so what makes you think youll fit in 3840x1080???
_________________
Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
Last edited by CasetheCorvetteman on Tue Jun 30, 2015 2:57 am; edited 1 time in total
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Tue Jun 30, 2015 2:55 am Post subject: |
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| Spanky Ham wrote: | | I haven't kept up that much, but even with a wider color gamut how are you planning on displaying the wider color gamut on a CRT? |
Bloody good question that, brings me back to my first reply 
_________________
Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Tue Jun 30, 2015 3:01 am Post subject: |
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| virusc wrote: | 4k blu ray is 4:2:2
I had a 2nd gen Panasonic plasma 480p and I can tell you that 1080i looked hugely better than 480p sources. I don't feel like spending 10k on a 4k digital that may not even be compatible with 4k content. |
Im not quite sure of what to make of this post... I never knew Panasonic sold a plasma TV with a 640x480p native resolution???
_________________
Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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KellenerSptM5
Joined: 08 Mar 2009
Posts: 198
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| Posted: Tue Jun 30, 2015 3:20 am Post subject: |
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| CasetheCorvetteman wrote: | | virusc wrote: | 4k blu ray is 4:2:2
I had a 2nd gen Panasonic plasma 480p and I can tell you that 1080i looked hugely better than 480p sources. I don't feel like spending 10k on a 4k digital that may not even be compatible with 4k content. |
Im not quite sure of what to make of this post... I never knew Panasonic sold a plasma TV with a 640x480p native resolution??? |
852x480p to be exact. In the late 1990s and early 2000s they sold them as 'EDTVs'.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Tue Jun 30, 2015 3:52 am Post subject: |
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Oh i see! I never have seen one that low over here, they were starting at 1280x1024 with stretched pixels here.
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Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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