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vodi38458096
Participant
November 14, 2019
Question

Big problems with HDR playback and rendering

  • November 14, 2019
  • 3 replies
  • 2616 views

Hey folks. I record video game footage in 4k HDR using AVerMedia's Live Gamer 4k. I've used this card for about a year now with no issues. Recently, after updating to Premiere Pro 2020 (and AME 2020), I have run into playback and rendering issues with HDR footage.

 

The HDR footage imports just fine, no errors. But when I play it back in Premiere, the colors shift constantly. It's like there is someone cranking up a brightness dial, then resetting it back to its original position, over and over until the clip ends. When I play the footage back in VLC, everything appears as it should. I've edited over a dozen HDR videos with no problems, until updating to Premiere 2020.

 

When I render the footage using either Premiere or AME, the quality is absoultely terrible. It's incredibly muddy, blurry, the colors are seriously off (grey sky moves between blue and purple), all sorts of nonsense.

 

I uninstalled 2020 and reinstalled 2019, only to have the same exact issue. I've reinstalled my graphics card (RTX 2020), no changes. I finally figured I'd just format my machine and start fresh with Premiere 2019, but the problem persists! Has anyone had this issue? I'm open to any and all experiments here.

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3 replies

R Neil Haugen
Legend
November 25, 2019

I have an image of the settings in the Premiere Preferences and Aja control panel, provided by Lars Borg, chief color scientist, Adobe DVAs. I hope this helps ...

 

Neil

 

Everyone's mileage always varies ...
R Neil Haugen
Legend
November 21, 2019

First thing is Premiere is internally hard-coded to Rec.709 as far as its own monitors go. So "seeing" any decidedly HDR content within Premiere is not possible. You need to have a device from AJA sending the proper data to a full HDR monitor. As in the FAQ on this forum I've prepared. This would mean material really producing a few hundred nits or more.

 

The Lumetri scopes in Premiere are fully HDR-capable now. And the controls should be again if you set the Lumetri panel for HDR in the three-bar menu at the top, and select the appropriate pivot point between whites/speculars in either the Basic or Color Wheels tabs.

 

Looking up that device, it seems like you run a game console with an "out" to the PCIe card in your computer, and record the input to the computer ... ? Interesting process.

 

What is the file generated by that device? Could you possibly upload a short clip for any other of us to check on our own systems?

 

Neil

Everyone's mileage always varies ...
R Neil Haugen
Legend
November 14, 2019

Actual HDR media requires using a Rec.2020 color space in the scopes and AJA hardware out to an HDR monitor.

 

Which doesn't sound like what you're doing.

 

What is the nits brightness supposed to be, and what form of HDR are you supposed to be working with?

 

Neil

Everyone's mileage always varies ...
vodi38458096
Participant
November 21, 2019

Sorry for not replying sooner. I had turned on alerts for the posts, but didn't get an email notification. Anyway, I am using Rec.2020 color space. Here are my render settings:

Frame Size: 3840x2176 (AVerMedia's RECentral records in this frame size in HDR mode)

Frame Rate: 59.94

Field Order: Progressive

Aspect: Square Pixels (1.0)

Render at Maximum Depth

Profile: High10

Level: 5.2

Rec. 2020 Color Primaries

High Dynamic Range

Bitrate Settings: 65mbps Target, 80mbps Maximum

Use Maximum Render Quality

 

---

 

In terms of nits, I'm admittedly not sure. I don't do any manual HDR work or color correction.