thumbnails in video


Senior Member
Hi, I do not get thumbnail previews in video, pictures are OK. After much browsing I found that regsvr32 shmedia.dll is missing. Is there a fix for this or do I have to do a complete reinstall?


Windows Forum Admin
Staff member
Premium Supporter
Your information is misguided. shmedia.dll is not a core DLL file found in Windows 7. It is a Windows XP-era DLL file that is no longer used in Windows 7. What you need to do:

Ensure your system is not low on hard drive space. This will automatically disable the feature.

Ensure no new programs have been installed, such as QuickTime, etc. These may actually change the file associations and ruin your thumbnails. To get them back go to Start -> Default Programs -> Set Program Access and Computer Defaults -> Microsoft

Right click "Computer"
Click Properties
Choose Advanced System Settings and find System Properties
Click on Performance and select Settings
Ensure "Show thumbnails instead of icons" is checked.

If this still does not work you are dealing with either a codec problem as a result of the installation of 3rd party software, or a problem with the registry


Windows Forum Admin
Staff member
Premium Supporter
Alternate solution:

Open Control Panel
Choose Folder Options
Click the Views tab
Uncheck "Always show Icons, never thumbnails"
Uncheck "Display file icon on thumbnails"
Click Reset Folders button.


Delete thumbnail cache with Disk Cleanup
How to Clear the Thumbnail Cache in Windows 7 and Windows Vista - The Winhelponline Blog

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