HDR Discussion Thread

[Penton-Man]

Originally Posted by Staying Salty

Yes, Virginia, there is a 4K

I knew that –

A 4K Video Tour of the University of Virginia (UVA) - YouTube

And back in the day, proudly walked, and
road those grounds ^ and still love C-Ville.

[PaulGo]

Originally Posted by Penton-Man

“The HLG programs and the converted HDR10 signals were simultaneously displayed side-by-side on identical pairs of consumer receivers – three different models; two LCD, one OLED. All of these displays had peak brightness values other than 1,000 nits. For a substantial percentage of the test sequences, the pictures converted to HDR10 format looked worse in various aspects, most frequently with a lack of detail and clipping in the highlights, and color distortions as well.”

So, the fly in the discerning videophile ointment is - how much worse ^ on displays having peak brightness other than 1,000 nits?

What typically is the peak brightness of an HLG broadcast. Is HLG static like HDR10 or more like DV?

[Geoff D]

Originally Posted by PaulGo

What typically is the peak brightness of an HLG broadcast. Is HLG static like HDR10 or more like DV?

It's neither, it uses relative luminance (like conventional SDR) rather than absolute luminance as per PQ-derived HDR (HDR10 and DV) which allows the display to render the intended 'look' according to how the display is set.

Originally Posted by Penton-Man

“The HLG programs and the converted HDR10 signals were simultaneously displayed side-by-side on identical pairs of consumer receivers – three different models; two LCD, one OLED. All of these displays had peak brightness values other than 1,000 nits. For a substantial percentage of the test sequences, the pictures converted to HDR10 format looked worse in various aspects, most frequently with a lack of detail and clipping in the highlights, and color distortions as well.”

So, the fly in the discerning videophile ointment is - how much worse ^ on displays having peak brightness other than 1,000 nits?

Hence my 'blunt instrument' comment re: HDR10 on the previous page.

[LordoftheRings]

Tomorrow is the end of the first month from this brand new decade ...
▪ https://forum.blu-ray.com/showpost.p...ostcount=12087

All is on track with the stars and top guns ... perfectly tracking on the radar ...

[Geoff D]

Christ that's gone quick.

[LordoftheRings]

270,000 views (now)

[JohnAV]

Originally Posted by Agent Kay

Every thread is now an Alita thread

Outside the specific film, the advanced technology involved with using live acting with photorealistic VFX where even all the facial movements are paralleled opens the doors for a awful lot of actor role expansion rather then elaborate applied costumes as currently done. In the realm of science fiction, fantasy, history this stuff they are doing now with VFX seems to make a lot possible. It also reminds us that the insertion of recently deceased actors could be better done then just correctly blended facial shots such as Fast and Furious and Star Wars examples when principals were lost before the film was completed.

It will likely allow Tom Cruise to act even longer.

[LordoftheRings]

Tom is immortal.

[JohnAV]

Originally Posted by LordoftheRings

Tom is immortal.

Only as a Vampire

[Staying Salty]

Originally Posted by penton-man

and still love c-ville.

Monticello.jpg

Has more "history" than any other state.

[Staying Salty]

Originally Posted by lordoftherings

tom is immortal.

Legend.jpg

[mrtickleuk]

Originally Posted by Geoff D

All it needs is colour primaries and min/max mastering level to qualify as HDR10 with the injection of ST.2086 metadata, those values could easily be pre-determined beforehand by putting a 'speed limit' on the amount of nits the content is being mastered to. It's not an elegant solution but then HDR10 isn't an elegant system, it's a blunt instrument to begin with.

I agree. Sort of what I meant, but not very clearly expressed. "Speed limit" is a nice way of putting it.

[Penton-Man]

Originally Posted by PaulGo

What typically is the peak brightness of an HLG broadcast.

Well there haven’t been that many and I’m not aware of any specific revelations on that by the content providers. Although live HDR is generally talked about in a peak 1000 nit production environment with regards to converters, I do know though as HLG proponents strive to produce single workflows and in that vein I think their latest thinking is to monitor in the truck or control room at a nominal peak luminance of 600 nits.

[Penton-Man]

Originally Posted by Penton-Man

anyway, given my team didn’t make it to the Super Bowl,

Miles Teller and Glen Powell of 'Top Gun: Maverick' Fix the Cowboys and Eagles | Slow News Day - YouTube

[Penton-Man]

Originally Posted by gkolb

Pics, or it didn’t happen.

picturesque desert/mountain landscape -



momentarily punctuated by a patriot with moral courage buzzing by fast on a motorcycle after leaving his man cave -


^ color graded from one of the trailers - https://www.youtube.com/watch?v=qSqVVswa420#t=1m34s

[Penton-Man]

Originally Posted by gkolb

Pics, or it didn’t happen.

Originally Posted by Penton-Man

Although many readers here may not qualify for access to some committee meetings, future and past, at the ASC Clubhouse, e.g. – https://forum.blu-ray.com/showthread...g#post12849032

so, locals might want to take advantage of the Open House this Saturday which is free and open to one and all -
https://theasc.com/news/asc-open-house-set-for-2020

900 strong -
https://theasc.com/news/members-turn...pen-house-2020

[JohnAV]

Originally Posted by Penton-Man

picturesque desert/mountain landscape

Looks like a whole lot of nothing there to drive though with air conditioning.

One good example is this one.

[Penton-Man]

Originally Posted by ROSS.T.G.

Every time I pop in this thread I’m confused.

Originally Posted by Penton-Man

no problem
for some background read p.12 of….. http://www.dvb.org/wp-content/upload...vb-scene54.pdf

news - at IBC 2019, on the UHD Forum stand in the Future Zone there will be a demonstration of a broadcast transport stream compliant with the new DVB specifications, being modulated into an LG C9 television. This DVB-T2 broadcast stream includes SMPTE 2094-10 dynamic metadata and is decoded by the television and displayed in a Dolby Vision picture mode.

^ -> another DVB offering coming up on Tuesday, no registration necessary, free -
https://dvb.org/webinar/hdr-dynamic-mapping/

[Geoff D]

Originally Posted by mrtickleuk

I agree. Sort of what I meant, but not very clearly expressed. "Speed limit" is a nice way of putting it.

And I stole it from this superb video wot Penton posted with colourist Eric Weidt talking about grading David Fincher's Mindhunter.

https://vimeo.com/373412274

[LordoftheRings]

5,260,609

Edit: 5,262,214