If each frame in the media contains the exact 1920 × 1080 pixels ...
This image has the same number of pixels on the top and bottom half, but you can probably see the bottom half looks worse. That's what lower bitrate does. It's like turning up the compression on a jpg -- you are not getting the exact same pixels, just the exact same image size.
You can keep tagging files ~forever and still not have them perfect… I just stop after when I think it’s good enough and I might start tagging them again at another time.
QFT!!
My current genre process is more hands-on but it's working for me. When I grab something, usually a complete discography, I look up the artist on Discogs, and use their genre pick. Sometimes I will put in specific genres for specific albums but usually, one genre for the whole discography is good enough.
Normally I can tolerate the Discogs genre picks, and this gives me a pretty consistent and bounded list of genres used in my library.
But like you said, it can never be perfect. Organizing my library can be kind of soothing though, like playing solitaire.
I would like to add that for people who may be intimidated by the tagging section, the tags that Deemix gives you are usually pretty decent to start with. You can clean them up to match your preferred format with a couple of quick mp3tag shortcuts. The hardest part is rectifying genres, which it looks like a lot of your automation is designed to do.
mp3tag is an amazing tool and anyone with a big music collection would be well served to study it!
TYVM. I think a big part of my problem is I had been grabbing chords for most things, not tabs... And when I did get tabs I was looking at the Official ones which don't have this download.
Don't fucking let anyone tab shame you my friend. Use them if you need them. The important thing is you are playing and learning and having fun. You can always learn new things too when you are ready.