If you're still looking and if the "no playlist" approach is acceptable I'd suggest trying out ranger (an ncurses file manager with vim-like keybindings). It even supports video previews, though I don't think you can define a numerical order for selected files (without patching it).
On Sun, Jan 15, 2017 at 04:54:46PM +0100, Mattias Andrée wrote: > On Sun, 15 Jan 2017 10:48:56 -0500 > Alexander Keller <cont...@nycroth.com> wrote: > > > The simplest way I can imagine is to link them into a > > directory temporarily and/or permanently with: > > > > mkdir playlist > > ln *some_glob_pattern* playlist > > > > Then use the vidir(1) program to edit the files to number > > them sequentially the way you want. Then you can either > > create a playlist and delete the directory using some > > basic command line tools or just keep the directory as a > > playlist. > > > > The problem with this approach is that I cannot > edit the list whilst it is playing, except for > removing files.