The 27th International Conference on Multimedia Modeling will be held on January 25-27, 2021 in Prague, Czech Republic. MMM is a leading international conference for researchers and industry practitioners for sharing new ideas, original research results and practical development experiences from all MMM related areas. The conference calls for research papers reporting original investigation results and demonstrations reporting novel and compelling applications. Special sessions, keynote lectures and the Video Browser Showdown will also contribute to a high-quality program.