UniFab is decent but better options elsewhere
I've been using UniFab for about a year and I've found it does a decent job of converting SDR to HDR and is relatively fast depending on the CPU and GPU configuration. However upscaling videos often takes an extremely long amount of time (often <1 fps) and has some serious limitations compared with other professional video editing software. It does not offer the capability to simultaneously upscale resolution, reformat audio, and apply HDR AI models all in the same process to the same file. For example the user must first upscale the video then separately convert the upscaled video to HDR in a separate process. I've recently switched to using NeoFootage AI which can upscale, convert audio, and convert SDR to HDR all in a single process - all at much faster speeds. It also uses the latest AI models. NeoFootage AI gives the user many more conversion options and is all around much better software for about the same price.