Devices > Video Cards, Monitors, Televisions, and Projectors
Anyone got a 4k TV/Projector yet?
bulldogger:
--- Quote from: Sandy B Ridge on September 15, 2013, 01:50:21 am ---I assume the 4:2:0 limitation at 4k 60Hz is a bandwidth limitation for HDMI.
Although I assume that 4:2:0 at 2160p should be better than 4:4:4 at 1080p?
SBR
--- End quote ---
I do not know. 32 channels of audio with HDMI 2.0 should be interesting. I think it's going to make external room correction processors viable. Companies like Trinnov are limited by the current ability of HDMI 1.4 to only transmit 8 channels. More than 8 channels are needed to address correction for multiple subwoofers.
6233638:
--- Quote from: Sandy B Ridge on September 15, 2013, 01:50:21 am ---I assume the 4:2:0 limitation at 4k 60Hz is a bandwidth limitation for HDMI.
Although I assume that 4:2:0 at 2160p should be better than 4:4:4 at 1080p?
--- End quote ---
I've been trying to find a copy of the HDMI 2.0 spec but I don't think there is anything available on the web yet.
As I understand it, 4:2:0 is optional with HDMI 2.0 - I certainly hope it is, because things like 32 channels of audio up to 1536kHz seem like a complete waste of bandwidth.
The reason that 4:2:0 is being added, is because it saves bandwidth, and it lets you use cheap players as source devices. Prior to HDMI 2.0, the minimum chroma resolution you could transmit was 4:2:2, which means that playback devices are required to do a minimum of 4:2:0 > 4:2:2 upsampling.
Part of the reason that madVR's chroma upscaling is so good, is because it has access to the unaltered 4:2:0 data. With HDMI 2.0, you now have the option of using cheap players that just pass on the data unaltered to the display or an external video processor.
--- Quote from: bulldogger on September 15, 2013, 06:51:50 am --- Does not matter, if it's 24fps or not. 4K material, most of which will be at 24fps is going to require HDCP 2.2 to get a picture. Older GPU are not going to work for 4K into the new displays with current version Display Port. The 60Hz is irrelevant really if you can not even get a picture to show at any frame rate for 4K material. Because HDCP has been "cracked" the new sets require HDCP 2.2 to display any 4K material. It's backwards compatible with HDMI 1.4 so you will still be able to display lower resolution material.
--- End quote ---
There's no reason that DisplayPort cannot be updated to support HDCP 2.2 as well. But HDCP doesn't seem like a big problem. I already use Media Center for all my video playback, so I don't have to worry about HDCP at all.
HDCP only matters for players like PowerDVD and stand-alone hardware.
bulldogger:
--- Quote from: 6233638 on September 15, 2013, 07:12:01 am ---
HDCP only matters for players like PowerDVD and stand-alone hardware.
--- End quote ---
It matters for your GPU. It matters if you want to transmit 4K into a HDCP 2.2 complaint device. So far because your current GPU is HDCP compliant, you can send any resolution you like with any player that you like and not have to worry. DisplayPort can be updated but that always requires new hardward. Hardware that you don't have in the current GPU.
Has HDCP 2.2 already been broken? If it has not, then there is no way for you to strip it from the 4k UltraHD video. That means you need a new GPU to transmit it that is HDCP 2.2 complaint. I wasn't aware that it had been broken??? If/when it is broken perhaps you can do as you say. Right now, no way. The players you describe all use some type of software like AnyDVD to strip HDCP. That's not going to work with HDCP 2.2.
Sandy B Ridge:
I can't believe that HDCP is mandatory for a 4k display. For a 4k content hardware player, then perhaps.
HDCP has always been an optional layer in the transmission.
Sony might choose to implement HDCP for its own displays because it owns the movies. If that is the case, then just need an alternative manufacturer!
SBR
bulldogger:
--- Quote from: Sandy B Ridge on September 15, 2013, 10:03:58 am ---HDCP has always been an optional layer in the transmission.
--- End quote ---
Yes. But when it is mandatory, and you want to watch a movie with a program like JRiver, you strip the HDCP out with AnyDvd or some other type of program. However HDCP 2.2 is new and to my knowledge has not been broken. Nearly all Blu-rays have HDCP. The newer UltraHD will have HDCP 2.2 and currently there is no way for you to strip it off with software. That means currently the only way for you to watch the new UltraHD movies when released will be with an HDCP 2.2 complaint device. All companies will use this encryption, it's not just Sony. HDCP 2.2 is a direct response to the hacking of HDMI 1.4. That's the sole reason it was created because the previous versions have been hacked.
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