video wallpaper fullscreen scale not kept through wallpaper changes

[vermi5]

Describe the bug
On first run, video is correctly adjusted to all display edges, but on subsequent video wallpaper changes during runtime, a black bar is introduced on the top.

To Reproduce
1 - Run Lively, last active video wallpaper will play
2 - Either in the Library or by systray icon context menu, change wallpaper.

Expected behavior
For MPV to retain scale through file loads

Screenshots/Video

NVIDIA_Overlay_FGT42F74BJ.mp4

Desktop (please complete the following information):

• OS: Windows 11 24H2 26100.2161
• Any video wallpaper

Aditional Info
Adding fs to mpv.conf seems to solve the issue
None of the scaling options in-app solved it.

Log file (Important)
Doesn't seem to show anything relevant but here you go:

20241103_210626.txt

[rocksdanister]

Don't run fs, window size should be managed by Lively.

duplicate: #2415