I'm glad I recognized my error before I sold the DVD!
Note that if you sell the DVD then this whole process becomes piracy and this forum should not give you illegal assistance.
You MUST own the original format in order to have a legitimate backup.
Ripping discs relies on the legal precedent that you are entitled to make a backup copy of discs you own, because it was easy to do so for CD and was a direct digital copy without tampering with any of the media contents.
It became a bit more tricksy when DVD introduced anti-piracy features that specifically had to be circumvented in order to rip the disc.
Ripping became even more tricky to do legally with Blu-ray because multiple anti-piracy measures have to be circumvented and removed from the backup so it becomes a deliberate action to create a copy that no longer retains those security features so not a simple backup, but is piracy.
Either way, Piracy is wrong from any point of reasonable view.
Please support the artists and everyone involved in the industry.
If you want it, then it is worth paying for.
If you can’t afford it then that is life and you should accept that you can’t have it.
I would love a Ferrari but can’t afford one. That doesn’t mean I can steal one.
You are not even using JRiver to perform the theft, only to play the stolen media files, so I’m sure you would have got better advice on a different site.
While I’m here, does anyone have a hacked registration code for JRiver that I could have?
(I joke! I was making a point. I think the software is worth every penny and I have paid for multiple legitimate upgrades over the years.)