How To Fix Videos not Showing Thumbnails In Mac


On your Mac, a QuickTime icon may appear in place of the video thumbnail in video previews. Thumbnails for videos are still pictures that show a preview of your video. All your Mac video files are missing the thumbnail. Here are tips for fixing Videos not Showing Thumbnails on Mac.

When you watch a video’s thumbnail, it will provide you with little characteristics that will help you recognize the video and remember what it’s about; they’re similar to book covers, therefore it’s critical that they display appropriately.

In this article, I’ll teach you how to ensure that your videos don’t display the generic QuickTime symbol.

Quicklook is a built-in function in Finder that allows you to see thumbnail previews of films and other types of files.

This issue is most likely caused by Quicklook cache issues. Here’s how to solve your cache problems.

Quit the Quicklook Thumbnail Agent

Let’s start with this: We’ll force quit (restart) the Quicklook Thumbnails Agent process in the hopes that the correct thumbnails will appear again. Take the following steps:

  • Open the Activity Monitor on your Mac. Double-click Activity Monitor in the Applications folder, then the Utility folder. You can also use Command () – Space Bar to open Spotlight Search and type Activity Monitor.

Videos not Showing Thumbnails

  • Copy and paste the following procedure into the Activity Monitor’s search box:
    By clicking on the process in the main window, you can bring it to the forefront. After clicking the (X) stop icon, click Force Quit.
Videos not Showing Thumbnails
  • The Thumbnails Agent process will be terminated as a result of this action. Close the Activity Monitor window. Restart Finder after that. Hold down the Option key while right-clicking (or control-clicking) on the Finder icon in your Dock to restart it. The relaunch is the option to choose.
  • Restart your Mac as well, just to be safe. Check to discover if a video’s thumbnail appears after your Mac restarts.
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Hopefully, your thumbnails are now working, but if they aren’t, we’ll clear the cache.

Clear Quick Look cache

If forcing a quit doesn’t work, we’ll attempt cleaning the cache. Here’s how to do it:

  • On your Mac, launch Terminal. Return to Finder and go to Applications > Utilities, or use Command () – Space Bar to open Spotlight Search and type Terminal.
  • Enter the following command in Terminal and press enter:
qlmanage -r cache
  • If the command was successful, Terminal will display the following message:
qlmanage: call reset on cache
  • This will instantly clear the cache. Of course, how rapidly this happens is determined by the amount of your cache.

The majority of thumbnail issues can be resolved by simply emptying the cache. Following the steps above should have cleared the cache, as well as your thumbnail issues.

Kuldeep Sathwara
Kuldeep Sathwara
Kuldeep is an iOS lover loves to write about the iphones ,iPad, Mac Updates, issues , Fixes and More.

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