winxdvd[.]com/event/dealnews-dvd-copy.htm?ttref=dn1902#tobuy
The lowest resolution TV you can buy today is 720p. If you're concerned about picture quality you play Blu-ray discs or stream 1080p or 4k. Because of that movie studios can cut the level of video quality on the DVDs they sell -- those people who would object no longer watch DVDs -- specifically so re-encoded copies that can be shared online look too nasty for anyone to want to watch them.
WinX DVD Copy Pro should be handy to back up your DVDs, especially those that are well worn. Otherwise, rather than converting DVDs to AVC, IMHO the more practical solution when it comes to DVDs, is to copy them & leave the video itself alone. Loads of people did this all the time with win7's Media Center, which used to support DVDs stored on hard drives quite well. The only reason to re-encode DVD video was/is to reduce the file size, often cutting it in half. That can make sense for hand-held devices with little storage capacity, though getting that video onto a device's storage can be a PITA. To me a better solution is to store video on a USB stick, and some brands/models are physically quite small -- I have one that protrudes from the USB plug maybe 1/4". To connect that USB stick with the device requires a OTG cable or adapter, which start at about $1.50. The mobile versions of VLC work great to play the DVD video. You can use the full set of DVD files in the VIDEO_TS folder, use just the title [e.g. movie] files in that folder, or copy the video to a stand-a-lone mpg2 file [though you'll lose subs & additional audio tracks]. And swapping movies is as easy as swapping USB sticks.
WinX DVD Copy Pro itself is a good enough app to copy video DVDs to a hard drive minus the DRM. I think that there are better, e.g. DVDFab's software, like Passkey, but those aren't free, and most likely won't be any time soon.
The only reason I hesitate with WinX DVD Copy Pro is that it includes a virtual DVD drive driver, checking for & installing it when the app's run. That's not a huge deal, but it bugs me because it's so patently unnecessary. You needed video DVDs to be in ISO form to play them off a hard drive in Windows, a Looooo...ong long time ago. For over a decade now some troglodytes refuse to get the message that it's No Longer Needed. So WinX DVD Copy Pro includes the ISO stuff to please them.
Otherwise WinX DVD Copy Pro is similar to most video apps out of China -- mostly self contained with little if any impact on Windows other than the disk space it takes up. I'd like to be able to tell you how well the software works, or doesn't, but I've not had my hands on a video DVD disc for quite a while now, so I've no way to test it. Once you get the DVD's files on your hard drive there's loads of free software to work with them at videohelp[.]com.