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4K Blu Ray Standard Confirmed |
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#1 |
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Join Date: Nov 2008
Posts: 2,053
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4K Blu Ray Standard Confirmed
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#2 |
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Join Date: Jul 2014
Posts: 455
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Cool, I can now dump all my DVD's out in the garage (to keep the old VHS tapes company) and go an purchase yet another new format to keep up with the Jonses :sarcasm:
Seriously though, 4K does look incredible, my friend is an avid snowboarder and has the bluray of "The Art Of Flight" (which was shot on Red 4K cameras)., When played on a native 1080P TV the footage,colours and depth is abundantly obvious. Youtube link to the trailer: https://www.youtube.com/watch?v=kh29_SERH0Y Last edited by tony-w : 06-09-2014 at 14:55. Reason: general tidy up |
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#3 |
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Join Date: Nov 2007
Location: St. Albans, UK, Team Wagner
Posts: 42,877
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Wouldnt watching a 4K BD on a "normal" 1080p TV not give you the full benefit of better image quality
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#4 |
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Inactive Member
Join Date: Jul 2014
Posts: 455
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Yes, that is true, but the bluray was shot using 4K cameras, so even though it was down scaled to 1080P (bluray) there was much more detail in the source (4 times as many pixels), which equates to better quality, at least perceivable quality anyway.
The same applies to converting TV recordings. You will achieve better results converting a HDTV 1080i recording to web compatible than you would from converting the same programme from a SDTV 576i recording. |
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#5 |
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Join Date: Apr 2006
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Quote:
Wouldnt watching a 4K BD on a "normal" 1080p TV not give you the full benefit of better image quality
![]() What it WILL do though is give you a slightly better picture than a normal BD, simply because it's a higher quality source. You get the same effect watching HD channels on a non-HD set, obviously you don't get any higher resolution, but because the source is better so is the resultant picture. I've always considered that HD on a non-HD set gives you what SD is supposed to look like, and likewise 4K on a normal HD set will give you what HD is supposed to look like (once 4K players and discs appear of course). |
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#6 |
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Join Date: Jul 2005
Location: Herts
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Do people still buy films on discs?
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#7 |
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Join Date: May 2005
Location: Redditch Worcs
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Do people still buy films on discs?
Those of us you have a good quality AV amplifier with decent speakers and a decent display know that there is no comparison. Frankly if no one bought any films on disk they would not be on sale, They are so your post is ridiculous, If you are watching on a HD TV and using a legal streaming source then you are totally missing the point. Get a quality Audio source and a good display, then the picture and audio will be way better than you can get from any illlegal source. Blu-ray is superior in both picture quality and audio than anything you can get from a broadcast source. If you don't know this then I guess you have a el cheapo TV, with a poor picture and really poor audio. Are you a pirate or simply a punter that does not have a clue ? So to answer your bizarre question - Yes I buy optical discs ( only Blu-ray and for content that I know I will want to see again). I rather doubt I am alone )
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#8 |
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Join Date: Oct 2003
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Obviously not - you've only got normal HD resolution.
What it WILL do though is give you a slightly better picture than a normal BD, simply because it's a higher quality source. You get the same effect watching HD channels on a non-HD set, obviously you don't get any higher resolution, but because the source is better so is the resultant picture. I've always considered that HD on a non-HD set gives you what SD is supposed to look like, and likewise 4K on a normal HD set will give you what HD is supposed to look like (once 4K players and discs appear of course). And of course 4K Blu-Ray content displayed on a good quality full HD TV should look slightly better than the HD Blu-Ray version. |
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#9 |
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Join Date: Jul 2012
Posts: 1,078
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What about HDMI?
Obviously HDMI will not be able to cope with the amount of data needed to transfer a 4K signal from a 4K box to a 4K TV. |
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#10 |
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Join Date: Feb 2008
Posts: 8,103
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Quote:
What about HDMI?
Obviously HDMI will not be able to cope with the amount of data needed to transfer a 4K signal from a 4K box to a 4K TV. HDMI 2.0 supports 4K (2160p) 50 and 60 FPS, 3D playback at 4K resolution, up to **32 audio channels (up from eight), an interesting feature called "dynamic auto lip-sync” this has the ability to deliver dual video streams to multiple users on the same screen, max throughput is 18Gbps (up from 10Gbps). What we don't know is will HDMI cope with 120FPS which could be the revised standard in UHD phase 2, it may mean another connection type all together. **Opens up the door for Dolby Atmos, which will certainly be included on 4k Bluray as it is just about to be included on Bluray. I wonder how many will be able to get this new format passed their partner.
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#11 |
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Join Date: Jan 2007
Posts: 40,801
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Quote:
Do people still buy films on discs?
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#12 |
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Join Date: Apr 2006
Location: North Derbyshire
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What about HDMI?
Obviously HDMI will not be able to cope with the amount of data needed to transfer a 4K signal from a 4K box to a 4K TV. ![]() The cables work OK, but obviously the sockets on non-4K items (TV's or sources) aren't likely to be compatible. Presumably the 4K BD spec. will include either a separate 'normal' HD HDMI socket, or a socket that can be set (manually or automatically?) to work with either - and the player will obviously downscale accordingly. |
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#13 |
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Join Date: Feb 2008
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How else are you supposed to buy them???
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#14 |
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Join Date: Feb 2008
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Nothing 'obvious' about it
![]() The cables work OK, but obviously the sockets on non-4K items (TV's or sources) aren't likely to be compatible. Presumably the 4K BD spec. will include either a separate 'normal' HD HDMI socket, or a socket that can be set (manually or automatically?) to work with either - and the player will obviously downscale accordingly. Surely whatever data/information is present will simply be transfered and decoded accordingly, just as it is now with the various resolutions/HDMI standards we currently have. It's just another HDMI version, 2.0 supports up to 4k, it's not exclusive. If a BD player is connected to a device that is not same version, support for the lowest version is only passed through, that's how it works now, I can't see any reason why it won't work the same for HDMI 2.0 and 4k. |
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#15 |
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Why do you think there will be the need for separate HDMI's or a manual/auto setting?
Surely whatever data/information is present will simply be transfered and decoded accordingly, just as it is now with the various resolutions/HDMI standards we currently have. Most TV specs. specifically list exactly what HDMI resolutions they will accept, and 4K isn't one of them. Quote:
It's just another HDMI version, 2.0 supports up to 4k, it's not exclusive. If a BD player is connected to a device that is not same version, support for the lowest version is only passed through, that's how it works now, I can't see any reason why it won't work the same for HDMI 2.0 and 4k. ![]() Manual switching would be another option, and is likely to be a menu option just as it is with BD - the problem been of course that if you're on the wrong resolution you won't be able to see the menus (for this reason many BD players have a 'output resolution' button on the handset). |
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#16 |
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If thought HDMI negogiated what resolutions are available and usable as standard? So a 4K Blu-ray player would automatically know not to offer 4K to a non-4K TV.
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#17 |
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If thought HDMI negogiated what resolutions are available and usable as standard? So a 4K Blu-ray player would automatically know not to offer 4K to a non-4K TV.
![]() However, BD players don't (or at least didn't) do this - and you often had to find a way to switch it to a lower resolution without been able to see the menu (which is how I found out about the button on the handset - but only after hunting down a 1080P set first ).
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#18 |
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Don't they? Or just some makes? Fairly sure my old Pioneer sorted it out without manual intervention (sorting out the audio to my AV amp was another ball game altogether).
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#19 |
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Don't they? Or just some makes? Fairly sure my old Pioneer sorted it out without manual intervention (sorting out the audio to my AV amp was another ball game altogether).
Presumably you've set-up a BD Player?, didn't it ask you to select the resolution of your set? - along with a message that if the screen blanks out (due to a non-supported mode) it will return to the old setting in xx seconds? EDIT: Quick thought, if your set would accept 1080P, then there's nothing to sort out - as it would accept all BD modes. The problems were only with 1080i only sets. |
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#20 |
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Digital copies from iTunes or Amazon.
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#21 |
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Because existing non-4K TV's are unlikely to be able to accept 4K signals, and will presumably just display "out of range" as they do for any 'odd' HDMI signals.
Most TV specs. specifically list exactly what HDMI resolutions they will accept, and 4K isn't one of them. Which would be 'auto-switching' as I suggested ![]() Manual switching would be another option, and is likely to be a menu option just as it is with BD - the problem been of course that if you're on the wrong resolution you won't be able to see the menus (for this reason many BD players have a 'output resolution' button on the handset). Players should only require one HDMI output, resolution settings/compatibility should be set from the player as they are now - I don't think it needs to be anymore complicated than that. So we could see something like 720p/1080i/1080p/4k in the video settings. Not seen any mention of disc storage yet, any guesses? |
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#22 |
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You will need fast broadband and a truly unlimited service to download movies with file sizes around 50GB. I my maths is correct a 50mbps download service will give about 6MB/sec. To get 50000MB will take about 8000secs (Over 2hrs).
Not much improvement in compression is needed to achieve that, with 50Mbps and above download speeds (for those who have it available). Well below that is a feasible connection speed for people willing to wait for a short while to buffer before starting to watch. So in a few years time, I'd expect high quality 4K/UHD 1 to be fairly widely available to watch online at higher quality than Youtube's (and Netflix's?) current 4K offerings at ~20Mbps. This is why 4K Blu Ray will not do anywhere near as well as Blu Ray: it will struggle to take off, yes it will be of higher quality than online or broadcast offerings but will be more of a niche product really. |
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#23 |
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I took your manual/auto switch as a means to switch between the two HDMI outputs which you suggested 4k BD players might have. So you where referring to manual/auto resolution setting?
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Players should only require one HDMI output, resolution settings/compatibility should be set from the player as they are now - I don't think it needs to be anymore complicated than that. So we could see something like 720p/1080i/1080p/4k in the video settings. Quote:
Not seen any mention of disc storage yet, any guesses? |
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#24 |
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Join Date: Feb 2008
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You will need fast broadband and a truly unlimited service to download movies with file sizes around 50GB. I my maths is correct a 50mbps download service will give about 6MB/sec. To get 50000MB will take about 8000secs (Over 2hrs).
Sky/Virgin offer unlimited 40+Meg BB - these services would not have a problem dealing with 50GB downloads - I don't know anywhere that offers these sorts of file sizes, not legally anyway. I prefer the physical disc myself, you're normally guaranteed the best audio/video quality available. Though I am looking at LiivNAS products, a drop and rip product, a convenient way to store all CD's, DVD's and Blurays all in one place. Just need to enquire if they will be 4k BD compatible.
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#25 |
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Join Date: Nov 2003
Location: Yorkshire
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I would expect sockets on 4K sets to all be 4K though
Cheers, David. |
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