UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.86 Safari/537.36

Example URL:
Any youtube video 

Steps to reproduce the problem:
1. Use the same browser and OS as me
2. Try to play any youtube video
3. 

What is the expected behavior?
The video should play normally

What went wrong?
It does not play. 

Did this work before? Yes Till about a week back. 

Is it a problem with Flash or HTML5? N/A

Does this work in other browsers? N/A 

Chrome version: 50.0.2661.86  Channel: n/a
OS Version: Mint
Flash Version: Shockwave Flash 21.0 r0

I had a discussion about it in the thread https://goo.gl/IAM7f1