“… Try to think about Dolby Vision as a funnel. The HDR grade is the wide end of the funnel: a high dynamic range (HDR), large color gamut, and possibly high resolution and frame rate moving image.
The Dolby Vision process analyzes your HDR grade (in the grading software), creates some metadata, and a Dolby Content Mapping Unit (CMU) reads the metadata produced by the analysis process. The metadata is embedded over SDI and in real-time the CMU creates a Standard Dynamic Range (SDR) version of the project….
… I know this is going to sound funny, but by starting with the HDR grade and deriving an SDR grade from that through the Dolby Vision process, I feel like I’m getting better SDR grades than I would have if I did the SDR version alone….”
That MixingLight’s Robbie Carman is achieving better Standard Dynamic Range grades by starting off with a High Dynamic Range grade is not funny at all – this result has been reported for some time before he wrote his still-relevant article.
Although I do not currently have access to the means to shoot or post-produce in Dolby Atmos and Dolby Vision, Mr Carman’s excellent three-part article is proving invaluable in better understanding the how, why and wherefor of two key Dolby Laboratories technologies that have found their way onto contemporary 4K television sets, Dolby Atmos and Dolby Vision.
“… Whether you’re new to shooting and delivering in HDR, or have been practicing for a while, the Panasonic GH5S with V-Log L enabled provides a fantastic starting point for an all-HDR10 workflow. From monitoring what you’re shooting in HDR10 to delivering your content through the color grading process, the LUTs and workflow we’ve created will accelerate your ability to leverage HDR10 on nearly any size budget…”
Production and equipment rental company Mystery Box, LLC has published a number of articles about aspects of shooting and post-producing HDR video that are useful reading for those needing to dig deep into how to get the best out of it all.
Mystery Box – HDR Video Part 1: What is HDR Video? – “HDR video is as much of a revolution and leap forward as the jump from analog standard definition, to digital 4K.” – Excellent 5-part series on working with HDR video.
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Angelbird 64GB AV Pro UHS-II SDXC Memory Card – B&H
Angelbird 128GB AV Pro UHS-II SDXC Memory Card – B&H
Angelbird 256GB Match Pack for the Panasonic EVA1 – B&H – special promotional packaging of two Angelbird 128GB AV Pro UHS-II SDXC memory cards that are just as usable in other cameras than the AU-EVA1 that also have UHS-II SD card slots.
Angelbird Atomos Master Caddy 4K RAW (500GB) – B&H
“Apple has gone ahead and and released what can only be described as a humungous update for Final Cut Pro, including the ability to edit 360° video, advanced color grading tools like curves and wheels, look up tables without the need to use third-party plug-ins, support for high dynamic range video and a whole bunch more….
… But while on the surface, the UI looks reassuringly familiar, those who shoot HLG for rec. 709 delivery using the Leeming LUT may be in for some unpleasant surprises….”
… HLG has similar gamma characteristics to SDR in dark range (processing in blacks similar to BT.709 below 100 nits), then changes to a log gamma above ~14 nits. Extends log processing of displays high brightness peaks up to 2.5 to 3 stops to mitigate blown-out or clipped whites. Can be displayed unprocessed on an SDR screen as EOTF adjusts system gamma to correct for viewing environment (10 to 500 nits) Does not require scene mastered metadata unlike PQ (HDR10) or Dolby Vision. Is best for Live production and fast turnaround HDR as you don’t need to grade too much if you’ve exposed to use the extra display stops correctly….
WORKFLOW: I output on a Mac to Pro Rez 422 10-bit (you can use any 10-bit or lossless package on your computer)Iand then recoded to bring the size down and add flags using HEVC. I used FFMPEG which is freely available to Windows, Mac and Linux users to code my HEVC files and to add the necessary HLG and Rec2020 flags which will trigger HDR TVs to play automatically the content in HLG. Here’s an example command line (make sure you download the 10-bit version of x265lib. Mac users should download Homebrew to install a compile.;-
Media Division – Test – GH5 Firmware 2.0 – “Quick test of the brand new GH5 firmware 2.0. We are looking into the 6K 4:3 Anamorphic mode, test the 400mbps All-Intra codec vs ProRes HQ, and try, if non “V” Cards can sustain write speeds to cover the 400mbps codec.”
Panasonic Australia – OLED 4K Ultra HD TV TH-65EZ1000U – appears to be the 65-inch Australian version of the Panasonic HLG UHD OLED reference TV set mentioned by Nick Driftwood.
Panasonic Australia – OLED 4K Ultra HD TV TH-77EZ1000U – appears to be the 77-inch Australian version of the Panasonic HLG UHD OLED reference TV set mentioned by Nick Driftwood.
LG UHD Smart OLED HLG HDR HDR10 Dolby Vision TVs – B&H – B&H Photo Video does not currently stock Panasonic televisions but right now I am deciding whether to invest in one of these LGs or a similarly-specced Panasonic.