Captioning makes videos accessible not only to those who are deaf, hard of hearing, or learning disabled, but to everyone as well. Making videos accessible helps those who are learning a new language, those who cannot turn up the volume (such as being in a library), and those who are in a noisy area and do not have access to headphones. By broadening your audience, you are making your videos accessible to all in any environment. Also, viewing captions on videos helps the viewer’s engagement, comprehension, and retention of information.
For media a transcript is also a good idea, and in fact is the only way to make video or audio content accessible to someone who is both deaf and blind. The transcript can be converted into Braille, to be read on a refreshable Braille output device.
Part of Section 508 of the Rehabilitation Act of 1973 requires captioning of multimedia products. In addition, colleges, universities, and other post-secondary programs must provide effective communication for deaf and hard-of-hearing students to continue to receive federal funding. Lecture capture recordings, academic materials, or anything else that is being used in class must be made accessible to students with disabilities and provide equal opportunity to those without disabilities.