This is a multimedia material that supports the paper entitled "Self-organized multi-target trapping of swarm robots with density-based interaction", published in Complex & Intelligent Systems, 2023. This is a multimedia material that supports the paper entitled "A Distributed Outmost Push Approach for Multi-robot Herding", published in IEEE Transactions on Robotics, 2024. This is a multimedia material that supports the paper entitled "Heterogeneous targets trapping with swarm robots by using adaptive density-based interaction", published in IEEE Transactions on Robotics, 2024.