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Instead, it has no user interface is provided. But, it can be used without using the command prompt in Windows.
What you need to do is to download Movie Thumbnailer and run it through Windows Explorer by unzip all the files to a folder first. Then look for an executable file called mtn.exe.
Image in 3 columns with the same width will always be generated in that directory once you have drag and drop the video on the mtn.exe file.
If you would like to use the progam with its full set of capabilities, then command prompt is required. You can get more detailed information here.
The output of the generated result will be a jpg file in the same directory as the video file is located. This software is free and available for Windows and Linux.