In many older tutorials, we use things like var and .then() that we forbid in our actual codebase. It would be more readable if the docs used a more modern syntax, especially around Promises. Not only is await easier to read, but our use of .then() in docs may mislead a reader into thinking that they must do the same.

According to the HLS specification, we must sinalize that a given audio track is DVS by the addition of CHARACTERISTICS="public.accessibility.describes-video" tag. I wonder if we should implement an option at the Sequence level on mapped mode where I set "dvs": true or something and that propagates all the way to the HLS manifest. Thoughts on this one @erankor?

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Recently, we changed the setup tutorial. We should probably take new screenshots to reflect these changes.