Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\mpv]
"URL Protocol"=""
@="URL:mpv"

[HKEY_CLASSES_ROOT\mpv\shell]

[HKEY_CLASSES_ROOT\mpv\shell\open]

[HKEY_CLASSES_ROOT\mpv\shell\open\command]
@="\"C:\\Program Files\\open-in-mpv\\open-in-mpv.exe\" \"%1\""