I think it should absolutely be a priority to upgrade a previous years set, it isn't acceptable to sell a £2k TV say, and not update it if it were possible, because in reality most people won't upgrade to another, in many cases way less than 12 months, especially with the flux that HDR is in at the moment.Great article, I'd be very interested to see if any manufacturers do provide a HLG update via firmware. As zubeir suggests it's all about $$$ so if your TV can't support HLG, you're going to buy another!
I completely agree with you, it should be a priority but that doesn't necessarily work out to be the case.I think it should absolutely be a priority to upgrade a previous years set, it isn't acceptable to sell a £2k TV say, and not update it if it were possible, because in reality most people won't upgrade to another, in many cases way less than 12 months, especially with the flux that HDR is in at the moment.
It does happen though, we've seen it with last year's HDR sets receiving 2.0a upgrades, and I remember Sony updating their first 4K set from 1.4 to 2.0 60Hz, and their previous 2 AV receivers from 1.4 to 2.0 4K 60Hz, I'm hopeful.
Yes - HLG is intended to be the broadcast standard for HDR and it is included in the spec for the next iteration of the Freeview Standard but I'm not sure when any transmissions that use the new features will start.Sorry for the extremely novice question but would HLG be received using a standard TV antenna or satellite dish? Or would some kind of special equipment be required (other than an HDR-10/DV TV of course)? Many thanks.
A databse that lists TV and their supported standards would be worth invaluable. Number of HDMI ports and what version, HDCP, HDR, HLG, panel depth etc, links to AVF reviews.Any thoughts about creating a page on the website that summarises what every TV can deal with. This would be an ideal starting point for prospective buyers as we attempt to future proof our purchases.
The common motion pictures cameras are more than sufficient in terms of dynamic range.The views in this discussion about upgrading / manufacturer responsibility for updates are interesting. Would you expect a new car to be updated after a year or two when a more economical engine is available or a new technology is developed by the car manufacturer?
@Steve Withers - great article. Forgive my naive question but is there any implication for camera equipment to be able to record content for HDR/HLG or are the cameras already way ahead of the resolution and dynamic range that is actually broadcast - i.e. if the broadcast element is resolved then all major channels could start transmitting HLG?
I would be very impressed if I actually found an electrical store salesman with as much technical knowledge as the salesman in this sketch. If I did I would be much happier. Most sales guys in the AV departments of so called mainstream electrical retailers haven't a clue of the technical details of what they are selling. Their only job is to shift merchandise to customers who have even less idea than they do. If someone with AV knowledge comes in, they don't ask the salesmen or ignore the bull they are spouting, so the salesman walks away.Anyone else feel like this while shopping for new kit at the moment?
When I originally wrote this article, JVC projectors required the user to manually select the HLG curve when watching HLG content over HDMI, presumably because it lacked any metadata flags. However now that the BBC has begun to offer HLG content on the iPlayer it appears that TVs at least can automatically select the HLG curve when playing HLG content using their built-in apps. I'm still not sure what will happen when HLG content is delivered over HDMI but I've updated the article to reflect recent developments.What exactly is meant by "TVs and projectors won't be able to automatically detect the HLG signal and engage the HDR mode, you'll need to do that manually"? How will you know when to manually engage HLG? If there is something in the signal that says HLG, that could be used to do the switch. If there is nothing in the signal, do you just 'suck it and see' for each broadcast?
So, in simple terms, is HLG more like Dolby Vision in action and describes the image content dynamically or is it a one shot static description like HDR10? If it's the former and works over current HDMI2.0a then it would seem to make sense to use HLG encoding on UHD disc rather than wait for the industry to foist dynamic HDR10 upon us requiring us all to upgrade to HDMI2.1. That's of course if HLG is royalty free. I'm assuming it is.
If your interested in making dual use SDR/HDR home content the video encoder Hybrid can convert HDR10 into HLG, I've basic tested it (LG TV notes HLG HDR) and it works though the exact parameters for proper conversion are above my head, set video encoder to x265 then look under x265/signaling tab to find the HDR controls.This is the exact question I am also interested in knowing or finding out. I started experimenting with converting the PQ HDR signals (mainly from my UHD Blu-ray Player UB820 tone mapped to 1,000 nits) to HLG HDR using an HDfury Vertex and so far the results are quite pleasing.
Based on the tons of reading I’ve been doing the last week or so, it appears that it’s almost like using Dynamic Tone mapping since it’s a scene referenced HDR format, unlike PQ which is Display Referenced.
I had to leave on vacation soon after my first experiments and now can’t wait to get back to do more!
I’m shocked that the focus has been on Tone Mapping PQ HDR10/BT2020 to SDR/BT2020 instead of to HLG HDR/BT2020 on low nit displays like projectors. It seems like such a better conversion option for these displays, especially since it’s backwards compatible with SDR.