The video transcodings generated with the current settings tend to be too large in size and the quality is poor. It seems most of this is due to the --deinterlace option.
As we live in 21st century, we can skip deinterlacing, not needed nowadays.
HandBrake is now available in version 1.x with new profiles. The up to now used "Normal" profile is marked as "legacy". Thus, we now use the modern "Fast 1080p30" profile for better video results.
The profile can be switched in the olat.local.properties: