This book constitutes the refereed post-proceedings of the 4th International Conference on Smart Multimedia, ICSM 2024, held in Los Angeles, California, USA, in March 28-30, 2024. The 9 full papers, 8 special papers, 4 industrial papers, 3 late breaking papers, and 3 short papers presented were carefully reviewed and selected from 60 submissions. The papers are organized in the following topical sections: machine learning for multimedia; multimedia; special session on smart homes and cities - the future through smart technological innovations; multimedia processing; short and industrial papers; industrial trend; late breaking papers; special session: haptic and human machine interaction.