Summary: How to play 4k blu ray disc movies?This guide will introduce a great 4K Blu Ray Player for Windows 10 or Mac to help you easy play 4K Blu Ray disc, moves in high quality on Windows 10/8/7/Vista/XP, Mac El Capitan/Yosemite/Maverick, etc.
Based on your original question and other replies You cannot connect an external UHD Blu-Ray player to a Mac. An external Blu-Ray player would require a HDMI 2.0 interface and firstly no Mac so far has shipped with a built-in HDMI 2.0 interface and secondly even those Mac that have shipped with a HDMI 1.4 interface only support using them for outputting to e.g. A TV and not for receiving a signal from an external device i.e. UHD Blu-Ray player. On some older iMacs it was possible to put the iMac in to 'Target Display Mode' and use the Kanex XD adapter to allow an external HDMI device to be displayed on the iMac screen.
However this only supported 1920x1080 resolution and not 4K resolution. This adapter is also discontinued as is the iMac model it worked with. What you may have really meant to ask is - is there any external UHD Blu-Ray drive that can be used with an iMac to read UHD discs?
The answer to this is 'maybe'. First you will need a SATA UHD Blu-Ray drive, these are extremely rare at the moment.
I believe Pioneer make such a drive - the BDR-S11J-BK and BDR-S11J-X. This could in theory be put in a standard USB SATA enclosure. The next issue is the fact that commercial UHD Blu-Ray discs like standard i.e. 1920x1080 commercial Blu-Ray discs will be protected by DRM. This DRM will require that the computer meet certain security requirements which absolutely no Mac meets. Then there is the performance issue, UHD Blu-Ray discs typically use the H.265 aka HEVC codec and this requires far more processing power than the H.264 used on normal Blu-Ray discs. Since no Mac has built-in hardware support for processing H.265 it instead has to be done purely in software using the CPU of the Mac and realistically all current Macs will struggle to cope with this but lets assume it is possible.
Finally there is the need for a program on the Mac that can actually play a UHD Blu-Ray movie. There is actually even now no officially approved standard Blu-Ray player for the Mac since Macs do not meet the official security requirements for even standard Blu-Ray. Free game downloads for mac. There are however some unofficial standard Blu-Ray player apps although these typically do not support the Blu-Ray menu screen and certainly do not support the highest quality audio tracks. It is not clear if all of these unofficial Mac Blu-Ray playing apps have been updated to support H.265 but the following claims to have done so. So whilst it might be possible to get one of the Pioneer UHD compatible drives and connect it via USB you are still going to face issues with DRM, performance, and maybe a lack of a suitable app to play the movie.
Note: There are general video apps for the Mac that can play H.265 e.g. VLC although my comment about performance will still apply, but these do not support playing UHD Blu-Ray format files/discs.
They will play H.265 4K video files that have either come from some other source e.g. A video camera or I would assume a UHD 4K movie some how 'ripped' from a disc.
(It is in most countries illegal to rip the content from DVD, Blu-Ray and UHD Blu-Ray discs.). Nicwilson58 wrote: BZZZZZZZT Wrong, you can connect a SATA 4K bluray player/burner to the Mac just fine, and with some player software of which there are few choices it works perfectly. I suggest you re-read my post more carefully. John Lockwood wrote: First you will need a SATA UHD Blu-Ray drive, these are extremely rare at the moment. I believe Pioneer make such a drive - the BDR-S11J-BK and BDR-S11J-X. This could in theory be put in a standard USB SATA enclosure. John Lockwood wrote: Finally there is the need for a program on the Mac that can actually play a UHD Blu-Ray movie. The sims 3 kickass torrent mac.