The (old version's) built-in osc UI inside "MPV_lazy" https://github.com/hooke007/MPV_lazy
It is modified from "mpv_thumbnail_script" https://github.com/TheAMM/mpv_thumbnail_script and official "osc.lua" https://github.com/mpv-player/mpv/blob/master/player/lua/osc.lua
Just download all files into your mpv'config folder!
Remember to back you original osc.conf file.
It is not compatible with other osc-like lua files. （e.g. delete the original mpv_thumbnail_script_client_osc.lua）
You should add osc=no and load-scripts=yes in your mpv.conf
File Tree
...\mpv\portable_config\
mpv.conf
...\mpv\portable_config\scripts\
osc_mod.lua
mpv_thumbnail_script_server.lua
mpv_thumbnail_script_server-1.lua
mpv_thumbnail_script_server-2.lua (more 'server' will speed up but higher usage of CPU)
...\mpv\portable_config\script-opts\
osc.conf
mpv_thumbnail_script.conf