[Video thumbnail plugin] generate multiples thumbnails

Hello, there are two plugins installed in my wordpress “Video thumbnail plugin” to generate video thumbnails and “Auto post thumbnails” for auto featured image, but the problem is when ever i post video “from dailymotion or facebook” it generates 3 or 4 images and upload it in to my server ?? and thats annoying.

I even disable “Automatically Set Featured Image” option in “Video thumbnail plugin” setting but nothing happened ??