Hi & Welcome to LQ! I don't know GUI (just a lot of OldUnix CLI), but here's a CLI idea, from:
https://stackoverflow.com/questions/...rom-a-linux-co
https://unix.stackexchange.com/quest...-with-its-size
(from a search without kde dolphin: linux sort video files by resolution):
Maybe you could adapt that to create a *symlink* containing the size! Like: foo.640x480.mp4
Or maybe put them is sub-directories by size.
I'm guessing you're right that there's no GUI option for this (&my ideas may not be useful);
maybe some other LQ'er will chime in (now that Thread got bumped off
ZRT)
Best wishes! Feel free to ask more questions! (Sorry this didn't get a reply)