How to download DRM protected videos (please refer the image below)

[paladinboy]

Dear All, please help me to download DRM-protected videos hosted on amazon cloudfront.
here is some information that may help you to provide a proper solution.

* The HTML provides this embedded link : https://d1z78r8i505acl.cloudfront.net/playerAssets/1.6.10/embed/index.html#817537
* screenshot of network section in developer menu :
[Attachment 72203 - Click to enlarge]

the website is onlineaccounting.lk ( a local tuition provider website)

please comment if you need any other informations.

[CrymanChen]

You're missing some important fields, my paladin boy. That's not how newcomers come up with a question.
First you should list your video URL, and let us know what kinds of DRM that it is using.
Then, the manifest URL, the license URL even more detailed, the cURL of that license request.
Only if by this can we help you solve your question.

From what you gave us, I would make an assumption that it's using DASH and Widevine (the provider is Vdocipher I guess).
Those related to Vdocipher, it seems that it is impossible to get the keys with CDMs dumped from the emulator...
Lemme know if there are any mistakes.