The speaker uses an instructional video from Teach for India as an example of effective video content in courseware. The video itself was shot on-site in India, in the same environment where teacher training is carried out. The passionate teacher discussing her teaching method successfully conveys the message, assisted with synchronized captions as the speaker in the video is making their point.
Subtitles help comprehend the content with ambient noise in the environment. The conference speaker also mentions how the Youtube caption feature can be accessible to people who speak different languages in different parts of the world.
Interestingly, some of these techniques are stated to be as effective as possible with just plain video, before the conference speaker begins their segment on Virtual Reality content for education.