We can set the start and end time in a youtube video like in this example and it works: https://www.youtube.com/v/97QyJve5L40&t=46s&start=83&end=106&autoplay=1
Explanation:
From the original youtube url https://www.youtube.com/watch?v=97QyJve5L40&t=46s
we just have to change 'watch?v=' to 'v/'
and append '&start=83&end=106' to the end, where the time is always in seconds.
we can also add '&autoplay=1' to the end, where 1 is for the video to autoplay and 0 is for the video to play only when we click on it to play (default).
Question:
What is the best way we could consider for playing several of these custom YouTube video urls, with start and end time, in sequence like a playlist? (Note that the YouTube website at the time of this writing lost the ability to set start and end time for each video in playlists.