How to generate synthetic HDR videos in Matlab?

I'd like to generate HDR videos in Matlab. The videos would not be camera-acquired imagery, but instead would be a sequence or animation of typical plots such as 'peaks'. I saw the HDR Toolbox, but it is meant to work with imagery. And there are Matlab tools to create videos from figures like as is done here, but those will be SDR movies since HDR movies need special metadata (here).

Any idea how to create videos in Matlab that include the metadata needed to be HDR videos? I am open to solutions that include external hardware like this, or external translation software to add the HDR metadata to SDR videos.