Thumbnails for video files in Windows 7 contain a film strip overlay on the sides which consumes part of the thumbnail image. If you need to remove the video sprockets / film strip effect, there is a registry setting you need to change.

Click Start, type regedit.exe and press {ENTER}
Navigate to the following key:
In the right-pane, double-click Treatment and set its value data to 0.
Here are the possible values…
| Data | Effect |
| 0 | No Adornment |
| 1 | Drop Shadow |
| 2 | Photo Border |
| 3 | Video Sprockets |
For more details, refer to section "Thumbnail Adornments" in this MSDN documentation.
Exit the Registry Editor.
Logoff and log back in to your account. Filmstrips are now gone!

One small request: If you liked this post, please share this?
One "tiny" share from you would seriously help a lot with the growth of this blog. Some great suggestions:- Pin it!
- Share it to your favorite blog + Facebook, Reddit
- Tweet it!