A friend of mine had a controller that worked with a VHS Video tape recorder to store data on video tapes. Video recorders used a rotating head to store the data on the tape not in a straight line but as multiple diaginal lines running across the tape. It stored what seemed like massive amounts of data at the time for much less expense per MB than the QIC tapes but it was a very expensive setup by comparison with some other disadvantages in retrieval times as well.
Alpha Microsystems made a VHS backup controller. If I recall, they could write the backup to the same VHS tape as a form of redundancy.
I believe that was the system that he used... I found an article from an earlier time period with your prompting.
https://tidbits.com/1991/01/07/vcr-backups/
I actually have a stack of multitrack QIC tapes and an old computer still setup with hard drive caddies and a tape backup device in it. I haven't fired it up in years. I would have to replace the CMOS battery and try to remember which settings to use in BIOS to get everything to run correctly... hopefully the defaults would work... and then I could see if that device could still read any of the tapes.
I found another article that said that a VHS tape could store up to 6 GB back then. This was an almost unimaginable amount of data in a time when a 3.5” “floppy” was the standard for portable storage. I remember buying an 850 MB hard drive long ago at Sam's Club and wondering how I would ever use that much data.