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This is about the device Fujitsu Futro S740:
I think I can summarize the following for Microsoft Windows as operating system:
- It is currently not possible to manually change Color Depth and Color Format via DisplayPort and with adapters:
https://www.intel.com/content/www/us/en/support/articles/000087657/graphics.html
I am using an Intel Core platform with UHD630 with HDMI via LSPCON where this is possible with the same graphics driver (31.0.101.2115). I'd agree that it would be useful to be able to configue Color Depth and Color Format for all connection types as is the case with AMD and Nvidia products. - However, Color Depth and High Dynamic Range is not the same. HDR provides high contrast imaging that also the display device must be able to show. Gemini Lake J4105 is a Celeron processor. HDR is only supported by 7th Generation Intel Core Processors and Newer Core Platforms: https://www.intel.com/content/dam/support/us/en/documents/graphics/HDR_Intel_Graphics_TechWhitePaper.pdf.
- UHD Graphics 600 supports:
- Video decode hardware acceleration H.265/HEVC @ Level 5.1 8b/10b, H.264 @ Level 5.2, MPEG2, MVC, VC-1, WMV9, JPEG, VP8 and VP9 formats.
However, supporting the decoding of 10-bit video does not automatically result in such a signal output. On Windows, it depends on how the software player handles DirectShow and which DirectShow filters are used. It would not be unusual if Dithering (10 > 8 bpc) would be applied in order to definitely assure a picture on screen.
- Video decode hardware acceleration H.265/HEVC @ Level 5.1 8b/10b, H.264 @ Level 5.2, MPEG2, MVC, VC-1, WMV9, JPEG, VP8 and VP9 formats.
- DELL U2412M monitor: The eIPS panel installed here is not a native 8-bit panel, but only works with 6 bits internally. A panel-internal A-FRC circuit (Advanced Frame Rate Control) is used to bring color gradients onto the screen without gaps. Roughly speaking, this performs Dithering with a temporal component in order to "mix" intermediate tones from the neighboring color levels.
- A true 12-bit panel does not exist for normal users, so even if the graphics adapter is capable to output this, the display would perform a corresponding down calculation like described above.
- Kodi showing "Display supported HDR types = HDR10" means that the LG C2 (10-bit panel) is telling the source device via the cable that it would support HDR10. 12-bit would not provide any perceptible advantage here either. However, HDR for Gemini Lake cannot be used on Windows. Unfortunately, I can't say anything about Linux.
While HDR isn't limited to 4K, it's rather unusual for 1080p source formats. This background might also be of interest:
https://www.thebroadcastbridge.com/home/category/acquisition/entry/11707/8-bit-vs.10-bit-video-whats-the-difference
Core statement: "It's not about what we can see on a direct display, but for more flexibility in post-production."
Is your attachment a local file? Could you please install MediaInfo and load the file there to see its properties?
There is no TV station that broadcasts 10-bit 1080p. This is also due to the necessary size of the data stream. Here is an example of a typical MKV 1080p without HDR:
4K HEVC 10-bit without HDR.
This is an HDR10 movie in the quality that corresponds to the Ultra HD Blu-ray specification:
What is clearly visible to all people are the benefits of HDR's higher contrast properties. You can see this in the „luminance“ and "light level" information above that the source must provide to enable the HDR display to correctly show it. This is the meta data. But that also works with 8-bit. Please read this.
If we know about the source material we can also check the information within your LG C2. There is an HDMI Diagnostics mode you can access:
- Open the settings of the TV by pressing on the gear icon on the remote
- Highlight or move the pointer over the All Settings option and open all settings
- Select the Channels option
- Move the pointer or highlight Channel Tuning
- Press the „1“ key on the remote five times quickly
You should then see something like this on your TV (Click to enlarge):
If you consider enabling HDR in Windows you might think of an upgrade of your computer hardware. Most affordable device would be something like this:
NUC 11 with Intel Iris Xe (and newer) can operate your LG C2 with 4K @ 120 Hz RGB 4:4:4 10-bit HDR (40 Gbps). This would be the maximum that your TV can do. However, you must use a Thunderbolt > HDMI cable for this. Please see here: https://community.intel.com/t5/Intel-NUCs/New-Nuc-11-i5-4k-issues/m-p/1453325#M97563
Please note that the mentioned cable may arrive with older firmware than necessary. If it is not working correctly, a firmware update can be done through Microsoft Windows when the product is plugged. Cable Matters provide updates on their website.
