support for https://unacademy.com/

[ramjmi]

Checklist

• I'm reporting a new site support request
• I've verified that I'm running youtube-dl version 2019.05.11
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that none of provided URLs violate any copyrights
• I've searched the bugtracker for similar site support requests including closed ones

Example URLs

• Single video: https://unacademy.com/lesson/vector-space-lesson-1-in-hindi/RD9SAOJX/?source=Course
• Single video: https://unacademy.com/lesson/vector-space-lesson-2-in-hindi/7C823QYM
• Playlist: https://unacademy.com/course/linear-algebra-for-csir-net-math/D74R1NTF

Description

Sir/Madam
Plz provide the youtube-dl support for the site https://unacademy.com/. I am unable to download playlist from this. Also, site provides download option to its android app. Support for this site is not helping me only but thousands of students in their learning.
Account details:
ramjmi@gmail.com
ram12345