Video File Browser is a shareware software. Unregistered version is a fully functional 25 day trial version. If you like this software please register.
Quick tutorial
Basic steps for using Video File Browser:
In settings specify the needed applications that you wish to use for the 'open with' functionality
Navigate to a folder with the video files
To switch between the 2 thumbnail view modes click on the 4th or 5th icon from the left at the top-right part of the browser panel
Full-screen preview on secondary display (if there are 2 or more displays) can be enabled with the 7th icon