It was mentioned previously that you can turn text-based information products into audio or video. However, you can do the exact opposite too. Transcribing the audio and even video scene information can result in a separate salable information product, or an “extra value” add-on.
Transcription can also enable those with damaged auditory senses to experience the media more completely. For example, a deaf person senses loud sounds by the vibrations they cause.
However, in a video, a loud noise can occur and the deaf person won’t be able to experience it. However, if the transcript, embedded as subtitles, describes the sound effects, then the deaf viewer may understand the video better.
Aside from transcribing your own material, you can also do the same for others. Offer this service to other people who have their own audio and video information products. Chances are they want transcripts but are not motivated enough to do it themselves.
This is also quite easy as it requires little more than attention to the media being played back and a reasonably good level of typing skill.