How does OCW create video and audio lectures?
Video and audio production is one of the most expensive and time-consuming parts of the OCW production process. To record lectures and other course material, we partner with an MIT media production group. Once this is complete, we review the video content to identify any third-party material (such as music or diagrams that appear in slides) and try to obtain permission from the owner to display the material. In some cases, this is impossible and we have to edit out these sections of the recording. When each video is edited, we encode them into web-friendly formats, typically Real Media and MPEG4 (learn more about our audio and video file types). Beginning in the spring of 2008, all audio and video on OCW is being submitted for transcription and subtitling. In this process, each video is carefully transcribed and reviewed by a subject matter expert to ensure accuracy. Transcriptions and subtitles will be made available for all of our video lectures in the coming years. If you would like
