I updated to Win11 24H2 and had no video/gif backgrounds anymore.
Then I re-installed Windows again (as a way to fix this - and other stuff in my Win7-Win10-Win11 install - lazy me) = same result. No Video/Gif Background.

i tested: MP4, FLV, AVI & GIF
i have all codecs installed.

nothing works - desktop is just black 😕

best wishes
Benjamin Hoffmeister

i switch from a normal jpg background on both screens to a gif on on screen and an mp4 on the other screen
result is a black background on both screens.

i only logged the bug - so time is 21:02

NOT IN THE LOG: if i add any normal picture to one of the screens instead of gif/mp4 it results in showing the image. but the gif/video on the other screen is still black.

hope this helps

2024/10/17 21:02:48.8248##_##INFO:L1##_##displayfusion.exe:5672##_##DFWallpaperSettingsSave:SaveWallpaperSettingsTHREAD:87##_##-##_##Save: Display #1:C:\BG\cube.gif,##_##-
2024/10/17 21:02:48.8248##_##INFO:L1##_##displayfusion.exe:5672##_##BFFormBase:WndProc:1322##_##-##_##[FormWallpaperApply] HandleCache is NULL: CacheFromNCCreate: 0x000f0b12,##_##-
2024/10/17 21:02:48.8252##_##INFO:L1##_##displayfusion.exe:5672##_##BFFormBasenHandleCreated:532##_##-##_##[FormWallpaperApply] Handle: 0x000f0b12,##_##-
2024/10/17 21:02:48.8255##_##INFO:L1##_##displayfusion.exe:5672##_##DFWallpaper:SetWallpaperAll_NOWALLPAPERIMAGESLOADED:438##_##-##_##Reason: Wallpaper Form, ImageMode: DifferentImageEachMonitor,##_##-

this should be the bug

here the gif

here a video that also doesnt work - like all dont work

by the way: while your at it maybe also include animated webp into "video-background" - as they are significantly smaller than gif

did you find a solution yet?