I just searched the forums here and found this because I'm experiencing the same limitation. Please allow users to import music viceos (or any video) and add the lyrics/subtitles themselves. 99% of the songs I want to learn don't have CC option on youtube for some reason. I can import the audio of the song and add the lyrics as the current import instructions mention on LingQs guide ( ). But I'd prefer to have the ability to import the video, even if subtitles aren't possible, and add the lyrics myself.
I could also use this for videos of people reading or acting out books (or theatrical plays) in my target language. Unfortunately some of the videos the subtitles are just hardcoded into the video or have no subtitles at all so they con't include CC. I have the book or script text so I could just add it to video in lingq.
Anyway for now it's easy to do a side by side option on my laptop. But on my phone I can't do that. Thanks!