Under YouTube videos, there is an option to "Open Transcript" which shows the video's subtitles with or without time stamps (you can toggle on or off). I have been copy-pasting the transcripts without time stamps to Readlang, but then you have to spend time syncing them manually, which I, personally, don't find this a useful step in the learning process. It would be AWESOME if we could copy-paste the time stamped transcript into Readlang and Readlang would recognize the timestamps and sync it for us.