thumbnailme
                                Thumbnail me is an open source software project based on the ‘Movie Thumbnailer’ binary.
                            
                        How to download and setup thumbnailme
Open terminal and run command
                                            git clone https://github.com/kwent/thumbnailme.git
                                        
                                        git clone is used to create a copy or clone of thumbnailme repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with thumbnailme https://github.com/kwent/thumbnailme/archive/master.zip
Or simply clone thumbnailme with SSH
                                            [email protected]:kwent/thumbnailme.git                                    
                                    If you have some problems with thumbnailme
You may open issue on thumbnailme support forum (system) here: https://github.com/kwent/thumbnailme/issuesSimilar to thumbnailme repositories
Here you may see thumbnailme alternatives and analogs
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