Windows 10: How to fix color banding/artifacts on video thumbnails in Windows File Explorer?

When I look at my video files in the standard Windows File Explorer Application Windows 11, the thumbnails of the video's are showing strange color banding artifacts. The thumbnails show a frame of the videoclip, but then with 4 or 5 different bars of very bright colors through it. These artifacts make it nearly impossible to recognize what videoclip it is. So far, this has only been the case with 10-bit MOV files. The video's play just fine. Does anybody know how I can fix this issue, so that my thumbnails are normal? I have already tried to fix the problem with the free Icaros Application,

:)

 

Windows Explorer crashes and thumbnails problem

Hi, I hope you can help me.
Windows Explorer is no longer showing thumbnails on files played by Windows Media Player. I've run cmd and regsvr32 shmedia.dll and regsvr32 shimgvw.dll. That seemed to solve the problem...but it created a different one. Now when I try to open a folder on an external hard drive it crashes. I read in an old 2008 post it was an avi file causing the problem and suggested the run cmd regsvr32 /u shmedia.dll. That solved the opening problem but recreated the thumbnail problem. Any help to achieve both functions would be greatly appreciated. Thank you.

 

Video thumbnails not showing up in Windows Explorer.

So I've been having this problem for several months now..

One day some of my video thumbnails weren't showing, so I deleted the thumbnail cache, and then they were all gone and never returned. It was like Windows lost the ability to create thumbnails for videos, and as I moved videos around over time windows never generated new thumbnails for them.

I have photo thumbnails, but not video thumbnails, and video thumbnails don't show up in other programs either, such as Media Player, or in alternatives to Windows Explorer, such as One Commander. It's like Windows has lost the ability to create video thumbnails. And only video thumbnails.

I also don't get any video previews in Windows Explorer's Preview Pane; but again I do get previews for photos and other files, PDF, etc.

And it's the same on all 4 of my hard drives, so it's not drive specific.

I have tried a lot of stuff such as:

• Deleting the thumbnail cache.
  
• SFC.
  
• DISM.
  
• Edit Group Policy.
  
• Explorer>Options>View>Always display icons, never thumbnails (checked and unchecked)
  
• Resetting Media Player settings (in case that interfered with it).
  
• Rebuilt the search index.
  
• Searched REGEDIT for "thumbs", but nothing stood out.
  
• Deleted temporary files.
  
• Virus and malware scans.
  

And I've probably tried various other stuff too that I've forgotten about.

Is there anything else I can check?

How exactly does Windows build thumbnails, is there some code, or a .dll file somewhere? Or is there some codec or media player feature that grabs a snapshot of the file or something?

Does Windows handle video and photo thumbnails differently?

I also don't have any thumbs.db files, anywhere (is this even still a thing?), even in folders with photos and thumbnails in them, even though I have turned on the option to show protected operating system files and hidden files.

Anybody know what's going on here?

 

File Explorer not showing thumbnails

Brink,

Many thanks for you reply. I have done all the steps you suggested, but no change,

When I open a folder containing photos, some open correctly but the vast majority open with thumbnails, but they very quickly get overwritten and you can not longer see the thumbnails.

Are there any more suggestions?