To make audio and/or video content inclusive and accessible it is necessary to provide descriptions of the whole content or fragmentary. It is also important to add captions and subtitles to video content. Captions not only include dialogue, but also identify who is speaking and notate sound effects and other significant audio (W3C, n.d.).
Sign language
If you are making videos consider providing a sign language interpretation. The sign language interpretation provides the ability for intonation, emotion and other audio information and therefore offers richer and more equivalent access to synchronized media (W3C, n.d.).
Audio control
If any audio on a Web page plays automatically for more than 3 seconds, it is important to provide a mechanism to pause or stop the audio, or a mechanism to control audio volume independently from the overall system volume level (W3C, n.d.).
Create subtitles:
matesub – Create better subtitles, faster
YouTube support, Use automatic captioning:
Use automatic captioning – YouTube Help (google.com)
Source:
W3C, n.d.: How to Meet WCAG (Quickref Reference), Audio-only and Video-only (Prerecorded). https://www.w3.org/WAI/WCAG21/quickref/?showtechniques=124%2C128%2C129%2C121#principle1 [30.8.2022].