When you share video on the internet, a common way to improve them to help your audience better, is to add transcriptions, and to help further, you can add transcriptions on multiple language, therefore, is a viewer does not understand the video's spoken language, the viewer will at least be able to read the transcript on the languages you added based on the transcripts you generated.
FairPlayTube: The Next Generation Of Video Sharing Portals, is a platform which helps you in this process.
Check the video here: https://fairplaytube.pticostarica.com/Public/Videos/Details/e3f9444a0e