Mpv issue: Can I set mpv open in full screen

In mac os, sometimes when I open a video, it tucked away in a corner, with much of the video off-screen. And I set


to aviod this
when I use cmd to open mpv in cmd

/Applications/ test.mp4

it can automatically play in fullscreen
but in anki it still can’t. So what can I do to set mpv or is there other way to avoid the the off-screen.
Thank you!

mac os
version:2.1.44 (b2b3275)⁩
Python 3.8.6 Qt 5.14.2 PyQt 5.14.2

According to the thread above, you can put mpv.conf in Anki’s data folder. I tried putting mpv.conf with a line saying fullscreen=yes in the folder, and confirmed it works on Windows and Linux. I don’t have a macOS, so I can’t verify if it works, but I think it probably does.