Blackmagic Forum

I am testing ACES 1.1 on HDR input formats but all I get is a black screen. Is there some setting that I miss?

Also was the 'Project' option in the input transforms removed from the clip settings?

Hello Cary,

Here no issue with ACES 1.1 and HDR clip. You can verify? or your clip has different metadatas?

Code: Select all

ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Commercial name                          : HDR10
Format profile                           : Main 10@L5.1@High
Codec ID                                 : hev1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 1 min 52s
Bit rate                                 : 60,0 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16/9
Frame rate mode                          : Variable
Frame rate                               : 59,940 (60000/1001) Im/s
Minimum frame rate                       : 59,920 Im/s
Maximum frame rate                       : 59,960 Im/s
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.121
Stream size                              : 808 Mio (100%)
Writing library                          : ATEME Titan KFE 3.7.3 (4.7.3.1001)
Language                                 : Anglais
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
MasteringDisplay_ColorPrimaries          : Display P3
MasteringDisplay_Luminance               : min: 0.0500 cd/m2, max: 1000 cd/m2
Codec configuration box                  : hvcC


Using Rec2020 is not necessarily HDR.

Did you try with any of the HLG or PQ settings at the clip level ACES Input Transform?

Note that there no longer is a Project option there, you either have to specify a specific transform or use No Transform.

To do what ? ACES 1.1 can 'encompass' other 'color spaces'? No ?
Just tell where we come from.

Look at the clip you use, if it is a HLG clip use Rec.2020 HLG (1000 Nits), if it is a PQ clip use any of the Rec.2020 ST 2084. Those settings need to be set at the clip level as there no longer is a 'use project level' option. If I use any of these my viewer turns black (both on the UI screen and through the Decklink).

Cary Knoop wrote:Look at the clip you use, if it is a HLG clip use Rec.2020 HLG (1000 Nits), if it is a PQ clip use any of the Rec.2020 ST 2084. Those settings need to be set at the clip level as there no longer is a 'use project level' option.

Other ?

Jean Claude wrote:

Cary Knoop wrote:Look at the clip you use, if it is a HLG clip use Rec.2020 HLG (1000 Nits), if it is a PQ clip use any of the Rec.2020 ST 2084. Those settings need to be set at the clip level as there no longer is a 'use project level' option.

Other ?

settings_project.jpg

Not sure what you are trying to tell with that image.

What is the clip level ACES Input Transform in your example set to?

Update:

Opening Resolve using OpenCL instead of CUDA made the problem go away.
It seems to be a CUDA related problem on Windows.

What GPU(s)? What CUDA version? What OS?

Dwaine Maggart wrote:What GPU(s)? What CUDA version? What OS?

Windows 10 Pro - 1803
2 x 1080TI GPU
CUDA 9.2

Ticket ID: AZZ-576-17315

Dwaine Maggart wrote:What GPU(s)? What CUDA version? What OS?

Linux encountered the same problem
Centos 7.3
Quadro M4000 GPU
CUDA NVIDIA-Linux-x86_64-390.87

I can confirm the problem is fixed in 15.1.1.