>>884878>>884879If it doesn't already exist, create an "mpv" folder in the root directory of where you originally put MPV.
There, if doesn't already exist, create a new file "mpv.conf". conf HAS to be the extension so be careful to not accidentally save it as "mpv.conf.txt".
Add the following line to the file
screenshot-template="optional text %f_%wH.%wM.%wS.%wT"
There's a few % specifiers you can choose from and they're documented here
https://mpv.io/manual/stable/#screenshot 