HDR Discussion Thread

[PaulGo]

Originally Posted by 2themax

I'm still here. Any rumors or misinformation is need to dispel?

Why on some UHD discs are there playability problems? Is due to work out the kinks in the manufacturing process and / or hardware problems in the UHD Blu-ray players?

[HeatEquation]

Originally Posted by 2themax

I'm still here. Any rumors or misinformation is need to dispel?

When will the widespread DV grey bar issue finally be fixed?

[2themax]

Originally Posted by ray0414

Were still wondering of DV and hdr10+ can be put on the same disc.

My current reading of the spec is yes but not within the same piece of video. So to do so, you'd have to double up on the encodes.

[2themax]

Originally Posted by Adrian Wright

I will add 'Will Lionsgate be supporting HDR10+' to that too please

Unknown but Lionsgate does seem to try everything at least once.

[2themax]

Originally Posted by PaulGo

Why on some UHD discs are there playability problems? Is due to work out the kinks in the manufacturing process and / or hardware problems in the UHD Blu-ray players?

I put more of the blame on the manufacturing process and that will improve over time.

[2themax]

Originally Posted by HeatEquation

When will the widespread DV grey bar issue finally be fixed?

Nice try but I won't take that bait.

[puddy77]

Originally Posted by 2themax

My current reading of the spec is yes but not within the same piece of video. So to do so, you'd have to double up on the encodes.

So effectively no? Aren't most DV encodes already filling up 100gb discs?

[DanBa]

Originally Posted by 2themax

I'm still here. Any rumors or misinformation is need to dispel?

Do the HDR10+ dynamic metadata have to be carried over HDMI 2.1 using the HDMI 2.1 transmission of SMPTE ST 2094 dynamic metadata, or do they have to be embedded into the video signal like the Dolby Vision dynamic metadata?

Thanks

[Geoff D]

Originally Posted by 2themax

My current reading of the spec is yes but not within the same piece of video. So to do so, you'd have to double up on the encodes.

Would I be right in assuming that it's because the HDR10 and DV layers are so intrinsically linked on a Dolby Vision encoded disc that you can't just interrupt that process to bolt on the HDR10+ metadata?

[2themax]

Originally Posted by puddy77

So effectively no? Aren't most DV encodes already filling up 100gb discs?

Correct, effectively no. Most, but not all, are on 100GB discs. The first 2 Despicable Me releases only use 30-35GB of a 66GB disc. I haven't checked the third.

[2themax]

Originally Posted by DanBa

Do the HDR10+ dynamic metadata have to be carried over HDMI 2.1 using the HDMI 2.1 transmission of SMPTE ST 2094 dynamic metadata, or do they have to be embedded into the video signal like the Dolby Vision dynamic metadata?

Thanks

No HDMI 2.1 needed. 2.0b will get the job done at least in the 4K BD world.

[2themax]

Originally Posted by Geoff D

Would I be right in assuming that it's because the HDR10 and DV layers are so intrinsically linked on a Dolby Vision encoded disc that you can't just interrupt that process to bolt on the HDR10+ metadata?

Actually, it's the HDR10 stream that is the concern. It seems trivial to embed the dynamic metadata but compatibility issues could arise.

[DanBa]

Originally Posted by 2themax

No HDMI 2.1 needed. 2.0b will get the job done at least in the 4K BD world.

So, like Dolby Vision metadata, HDR10+ metadata are not using the HDMI 2.1 transmission of SMPTE ST 2094 dynamic metadata (i.e. HDMI 2.1 / CTA-861-G HDR Dynamic Metadata Datablock & HDR Dynamic Metadata Infoframe) in the 4K BD world.

And AVRs need to have a HDR10+ pass through feature.

Thanks

[2themax]

Originally Posted by DanBa

So, like Dolby Vision metadata, HDR10+ metadata are not using the HDMI 2.1 transmission of SMPTE ST 2094 dynamic metadata (i.e. HDMI 2.1 / CTA-861-G HDR Dynamic Metadata Datablock & HDR Dynamic Metadata Infoframe) in the 4K BD world.

And AVRs need to have a HDR10+ pass through feature.

Thanks

Let's make it confusing. Both SMPTE ST 2094 and CTA-861-G are being used but the spec explicitly says only HDMI 2.0 or higher is needed. Compatibility testing should be fun.

[DanBa]

Originally Posted by 2themax

Let's make it confusing. Both SMPTE ST 2094 and CTA-861-G are being used but the spec explicitly says only HDMI 2.0 or higher is needed. Compatibility testing should be fun.

It’s very confusing, at least for me.

HDR10 needs HDMI 2.0a and higher.
HDR10+ only needs HDMI 2.0 and higher!

As far as I understand, compatibility testing of transmission of SMPTE ST 2094 / CTA-861-G dynamic metadata is defined in the upcoming HDMI 2.1 Compliance Test Specification.
Once passed the compliance test of the HDMI 2.1 transmission of dynamic metadata, the device maker can claim that his device is HDMI 2.1 compliant, as all features in HDMI 2.1 are optional and even if the device is using a HDMI 2.0 chipset.

[Tns49]

Originally Posted by DanBa

It’s very confusing, at least for me.

HDR10 needs HDMI 2.0a and higher.
HDR10+ only needs HDMI 2.0 and higher!

As far as I understand, compatibility testing of transmission of SMPTE ST 2094 / CTA-861-G dynamic metadata is defined in the upcoming HDMI 2.1 Compliance Test Specification.
Once passed the compliance test of the HDMI 2.1 transmission of dynamic metadata, the device maker can claim that his device is HDMI 2.1 compliant, as all features in HDMI 2.1 are optional and even if the device is using a HDMI 2.0 chipset.

Its simple any player that support HDR 10+ and any TV that supports it via it HDMI inputs has been fudged to support the necessary transmission, even if it doesn't fully support 2.1, 2.0A or 2.0B. Similar strange things have happened with earlier HDMI levels.

[DanBa]

As far as I know, it is the first time that all features are optional.

[DanBa]

HDMI Feature Support Table:
https://www.hdmi.org/press/press_kit.aspx

[HeatEquation]

Originally Posted by DanBa

HDMI Feature Support Table:
https://www.hdmi.org/press/press_kit.aspx

This table is wrong. Not sure why this is even debatable anymore.

Panasonic has confirmed twice that HDMI 2.0 is enough, so has Vincent Teoh, and now so has 2themax.

Furthermore, the HDMI.org has stated that dynamic HDR can be added via firmware update on HDMI 2.0 devices.

[DanBa]

This table is from HDMI!