In order to broadcast the HDR properly, broadcasting companies as well as studios need to evaluate the content. Most of them ask a PDF file containing a histogram showing each frame MaxFALL and MaxCLL (which are related to luminance).
This tutorial will explain how to analyze the content and export the HDR report.
1. Set the range of analyze
The analyze is working only on the defined composition range.
In order to do it, use the keys CTRL+SHIFT+I for IN point and CTRL+SHIFT+O for OUT point:
The violet bar shows of the length of the composition.
2. Set the active area
The HDR metadata should not include the blanking, that's why set the active area is crucial. We have to respect the aspect ratio of the content, if we don't want to include the letterbox (e.g a scope format fitted in a HD frame).
If we want to know what's the Aspect Ratio of our media, we can read its metadata by right-clicking on the viewport then "Clip properties".
To define the active frame, we need to go to the Composition Settings then OUTPUT tab to setup the Active Area Aspect based on your content:
By pressing ALT+B or by right-clicking on the Viewport to access to the GUIDES tab, we can check the active area thanks to the green frame guide:
3. Launch the analyze
Press F6 to call the Composition Analysis tool.
Select HDR Statistics as type analysis then define the color space of your content from the dedicated drop-down menu.
Click on the Analyze button to launch the analysis:
4. Display the HDR Graph
Once analysis is done, we can see the result with the Luminance Meter scope by pressing SHIFT+N. In the options, the Type should be set to Global to display the full graph:
Also, the values of MAX FALL and MAX CLL are reporting into the CMS of the composition settings:
If already embedded in the media, these values will be displayed in the CMS as well. You can also manually edit the values by clicking on it.
5. Export the HDR report
To export the report, use the EXPORT button at the bottom of the screen and select the HDR Statistics Report as PDF or XML file: