Exploring the evolution of victim treatment in international criminal proceedings, this study highlights the shift from a documentary evidence-based approach to one prioritizing direct witness testimonies and a victim-centered perspective. It reveals how modern international and hybrid courts adapt to better understand and address victims' needs, especially those of vulnerable witnesses. Through qualitative methodology, including historical analysis, legal document review, and comparative analysis, the study examines key legal instruments, court rulings, and scholarly commentary. Distinguishing itself by integrating the author's firsthand experience as an international judge, it offers unique insights into the practical application of these principles. This blend of practical and academic perspectives provides a comprehensive understanding of the legal and practical aspects of victim treatment, making this study an invaluable resource for both scholars and practitioners in the field.