Generating customized on-demand videos from automated test scripts is provided. Responsive to receiving a request for an instruction on performing a task on a computer, a database of automated test scripts may be searched to identify a set of test scripts that comprise a set of executable actions associated with the task. An automation test sequence associated with performing of the task is built based on test scripts identified in the searching. The automation test sequence is run on a machine. While the automation test sequence is running on the machine, screen activities of the running automation test sequence are recorded to generate a video, e.g., by running a video capture program.