Objective: During psychiatric rotation, clerkship students must learn the clinical skill of recording an accurate Mental Status Examination (MSE). The authors built a video e-library consisting of 23 authentic patient videos that were accessible on a secure website during the rotation period, aimed at assisting students’ acquisition of MSE skills. Methods: The authors conducted a prospective case comparison study investigating the impact of the video e-library as “add-on” intervention, on acquisition of MSE skills, as measured by a test consisting of three videos with adjoining forced choice questionnaires. Eighty-five clerkship students had instructions and access to the video e-library whereas 82 did not. A group of clinicians, unfamiliar with the video e-library, was also subjected to the new MSE skills test and they served as a reference group. Outcome was defined as scores of MSE skills measured by the purpose made MSE skills test and entailed evaluation questions on the students’ use of the e-library. Results: The MSE skill test score differed between the three groups, and the clinicians scored higher than both student groups (clinicians mean score (M) 12.6; p < 0.001). However, the students with video access scored higher compared to students without access (M 10.7 versus M 9.9, p = 0.04). The e-library was appreciated by the students as helpful (83.6%) and they used it not only for practicing the MSE but also for observation of interviewing techniques. Conclusion: The e-library with video vignettes of authentic patients strengthens MSE skills as “add-on” to the psychiatric rotation, and evaluations by the students were positive.