Black square on top left when playing video wallpaper

[txtboks]

Describe the bug

There's a black square on the top left of my screen. Whenever i close Lively it disappears

Steps to reproduce

I don't know how to reproduce it. whenever i open Lively it appears

Expected behavior

It worked great last time when i use it

Screenshots/Video

This is what it supposed to look like

Operating system

Windows 11 Pro 24H2

Wallpaper running at the time (if any)

A custom wallpaper

Additional context

No response

Log file

lively_log_20250908_151201.zip

[rocksdanister]

I think this is an issue with gif using integer scaler.

Test the following:

1. Does the black square appear for video (.mp4) wallpapers?
2. Try a different gif file?

[txtboks]

Sorry for not replying quick enough and sorry for closing and reopening this is the first time i used github

1. Yes
2. The black square appears when i use any custom wallpaper regardless of the file format

[rocksdanister]

Does it also appear in preview windows? ( ... -> Preview walllpaper)

What about the built in webpage wallpapers (matrix, fluid et..)?

[txtboks]

No, It doesn't appear in the preview window, And the built in wallpaper doesn't have the black square. It only appears when i use custom wallpaper

[rocksdanister]

So its a video player related issue,

I would start by trying to re-create the issue by playing the video using the player directly:
https://sourceforge.net/projects/mpv-player-windows/files/64bit/

The one Lively is using is mpv-x86_64-20250803-git-86e1292.7z

If the issue can be seen, then try newer versions and report back.

[txtboks]

The gif appears normal when using the video player provided,And doesn't have the black square

[rocksdanister]

Weird this is only happening with your system 🤔

The gif appears normal when using the video player provided

Try starting mpv.exe with --no-border in terminal and see if the issue is there.
https://mpv.io/manual/master/#options-border

[txtboks]

The gif still appears normal; doesn't have the square