4K/HDR Catalina TV App movies through EGPU DisplayPort
 
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4K/HDR Catalina TV App movies through EGPU DisplayPort  

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joevt
(@joevt)
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Speaking of DSC vs Chroma Sub Sampling, someone with an Apple Pro Display XDR did some tests in Windows showing that XDR does not support chroma sub sampling 🙁

 #32 

 

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AndySpeed
(@andyspeed)
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Now that 10.15.4 has been released and it officially supports HDR on external monitors (see https://egpu.io/forums/mac-setup/prefer-hdr-mode-in-macos-10-15-4-beta/ and from the release notes:

This update also includes bug fixes and other improvements.
- High Dynamic Range output to HDR10-compatible third-party displays and TVs connected with DisplayPort or HDMI)

, does this carry over to the TV app, or are SD/SDR restrictions still in place?

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Massimo Franzese
(@massimo_franzese)
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Apple official statement came out and there is a note regarding Tv app:

4K HDR, 4K Dolby Vision, Dolby Atmos and HDR10 content is available on all Mac models introduced in 2018 or later with 4K-resolution screens.

What is means is:

Imac and Imac Pro with at least 4K screen

Apple Displa XDR

Third party screens seems not to be supported with any type of connection as I have an HDR-10 display and the only playback I get is final cut pro and VLC on my Macmini8,1

 

 

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AndySpeed
(@andyspeed)
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Posted by: @massimo_franzese

Apple official statement came out and there is a note regarding Tv app:

@massimo_franzese

This appears to be the statement when Catalina was first released. Is it new/updated for 10.15.4? 

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Massimo Franzese
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@andyspeed, no the statement still stands and now you have 

HDR is supported for Netflix however Netflix works through a browser on Mac and no browser supports HDR right now

I see a possibility of Safari getting an update to support HDR Netflix and that would be all for third party screens

Right now in essence HDR is limited to the content I produced with my own camera on my Mini with 3rd party HDR display for all the rest buy an iMac 4K plus

 

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AndySpeed
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@massimo_franzese, Do you have a link to the statement that mentions HDR Netflix on Mac?

Thanks

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Massimo Franzese
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@andyspeed, it is in the 10.15.4 release notes however now that I have updated I realised apple website is not updated so search on google for 9to5mac or similar

 

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Massimo Franzese
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Release notes see HDR point on safari netflix

MacOS Catalina 10.15.4 Release Notes

The release notes accompanying macOS Catalina 10.15.4 are as follows:

macOS Catalina 10.15.4 introduces iCloud Drive folder sharing, Screen Time communications limits, Apple Music time-synced lyrics view, and more. The update also improves the stability, reliability, and security of your Mac.

Finder
– iCloud Drive folder sharing from Finder
– Controls to limit access only to people you explicitly invite or grant access to anyone with the folder link
– Permissions to choose who can make changes and upload files and who can only view and download files

Screen Time
– Communication limits for controlling who your children can communicate with and be contacted by throughout the day and during downtime
– Playback control of music videos for your children

Music
– Time-synced lyrics view for Apple Music, including the ability to jump to your favorite part of a song by clicking a line in lyrics view

Safari
– Option to import Chrome passwords into your iCloud Keychain for easy AutoFill of your passwords in Safari and across all your devices
– Controls for duplicating a tab and for closing all tabs to the right of the current tab
– HDR playback support on compatible computers for Netflix content

App Store with Apple Arcade
– Universal Purchase support enables the use of a singular purchase of a participating app across iPhone, iPod touch, iPad, Mac, and Apple TV
– Recently played Arcade games appear in the Arcade tab so you can continue playing on iPhone, iPod touch, iPad, Mac, and Apple TV

Pro Display XDR
– Customized reference modes that you can tailor to specific workflow needs by selecting from several color gamut, white point, luminance, and transfer function options

Accessibility
– Head pointer preference for moving a cursor on the screen based on the precise movements of your head

This update also includes bug fixes and other improvements.

– High Dynamic Range output to HDR10-compatible third-party displays and TVs connected with DisplayPort or HDMI

– OAuth authentication support with Outlook.com accounts for improved security

– CalDav migration support when upgrading to iCloud reminders on a secondary device

– Resolves an issue where text copied between apps may appear invisible when Dark Mode is active

– Fixes an issue in Safari where a CAPTCHA tile may display incorrectly

– Resolves an issue where Reminders may send notifications for completed reminders

– Fixes an issue with screen brightness for the LG UltraFine 5K display after waking from sleep

Mac Mini 2018 3.2 Ghz 6 cores
Razer Core X enclosure with Sapphire Vega 64 Nitro
Benq PD2720U


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Massimo Franzese
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I can confirm that HDR is not supported on 3rd party monitor on netflix either 

So essentially HDR is just an apple business for apple except final cut pro or other applications where it seems to work

Mac Mini 2018 3.2 Ghz 6 cores
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AndySpeed
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I wanted to update this thread with additional information from Apple's support site on this issue. Apple has a table describing which hardware can display HDR content and at what resolution ( https://support.apple.com/en-us/HT210980 ):

Support for HDR on Mac

Mac model
with Thunderbolt 3 (USB-C)
Built-in display External display
with DisplayPort
External display
with HDMI
MacBook Pro introduced in 2018 or 2019 HDR1 HDR HDR2
iMac Pro HDR HDR HDR
Mac mini introduced in 2018 HDR1 HDR3
Mac Pro introduced in 2019 HDR HDR
1. HDR up to 1080p (1920 x 1080) for premium HDR content from Apple.
2. HDR up to 1080p when using the Apple USB-C Digital AV Multiport Adapter with some 13-inch models.
3. HDR up to 1080p for all content.

External displays. Use the Thunderbolt 3 (USB-C) ports on your Mac to connect to external HDR10-compatible displays:

  • DisplayPort display: To connect to DisplayPort, use a cable that has a USB-C connector for your Mac and the appropriate connector for your display. Most displays that support DisplayPort connections use either a standard DisplayPort or a USB-C port for this purpose.
  • HDMI display: To connect to HDMI, use an HDMI cable and USB-C adapter, such as the Apple USB-C Digital AV Multiport Adapter or Belkin USB-C to HDMI Adapter.
  • Apple Pro Display XDR supports several HDR formats, including HDR10, when used with a Mac compatible with this display.
 
As you can see, non-Apple TV App HDR content can only be displayed up to 1080p. In order for an external monitor to display HDR content it must be connected via a Thunderbolt 3 port. HDMI displays need to use an adapter. This appears to rule out EGPUs (as well as any non-Pro iMac).
As for 4k content from the Apple TV App:

Here's what you need to watch the highest-quality video available

  • Video content with a high-quality version that you purchased or rented.
  • A device capable of playing high-quality video content:
    • 4K, 4K HDR, 4K Dolby Vision, Dolby Atmos, and HDR10 content is available on iMac Pro (2017) when viewing on the built-in display.
    • 4K, 4K HDR, 4K Dolby Vision, Dolby Atmos, and HDR10 content is available on Mac Pro (2019) and 15-inch or 16-inch MacBook Pro introduced in 2018 or later when viewing on Pro Display XDR.
    • Refer to the tech specs for your iPhone, iPad, or Apple TV to check if your device can play 4K, HDR, or Dolby Vision videos.
  • The latest versions of iOS or iPadOS, macOS, or tvOS.
  • An Internet connection fast enough to watch high-quality content.

( https://support.apple.com/en-us/HT207949)

This confirms what has already been found by the various members of this forum in the replies in this thread (Thanks, everyone!). 4k content from the TV Mac App can only be decoded by the iMac Pro, the 2018 Mac Pro, the 2018 or later 15-inch MacBook Pro, and the 16-inch MacBook Pro. The content can only be displayed at full quality on the iMac Pro screen or the Pro Display XDR. This does not mention EGPUs. This is a contradiction of the original announcement of the feature in Catalina after the WWDC '19 keynote that stated that all 2018 or later Macs would be able to decode 4K content from the TV App. ( https://www.apple.com/newsroom/2019/06/apple-previews-macos-catalina/).

This of course could change in 10.15.5... But, this appears to be the status as of this date.  

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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