Hello, I'm new here.
All these years I used to surf with the chrome browser and now I said to myself that I need to make a change to my life. So, I decided to change browser. I made some tests (JetStream, Octane, Kraken, WebXPRT 2015, HTML5 Test) and I realized that Opera is good enough (at some tests Chrome was first and some others Opera). Of course, you, guys, can do better. So, I use Opera from the last week untill now. To tell you the truth, in general, I'm okay with it, I don't have a problem. In fact, there are many that chrome didn't have and I liked it. But yesterday and today, I faced the following problems:

1. Why is there this problem on youtube? This is a live video. There is no problem in Chrome
   
2. Why is there this problem on twitter? It plays perfect at chrome.
   
3. And, finally, why is there this problem at the following popular site? I clicked to a video in order to watch it for my PhD paper and the "Play" icon + the other two look weird and I cannot play the video. When I click to the play button, the following black screen is showed up and I still cannot play the video.
   
   

I use MX Linux

Sorry for my bad English. This is not my native language.

@Didaktiker Run this script as root and you will be OK: https://gist.github.com/mcarletti/7989d1c04199dba60a01adf8ac54fe31

@leocg Thank you, my friend! I run the script from that link and it worked. Thank you!
https://gist.github.com/mcarletti/7989d1c04199dba60a01adf8ac54fe31

Hello, I'm new here.
All these years I used to surf with the chrome browser and now I said to myself that I need to make a change to my life. So, I decided to change browser. I made some tests (JetStream, Octane, Kraken, WebXPRT 2015, HTML5 Test) and I realized that Opera is good enough (at some tests Chrome was first and some others Opera). Of course, you, guys, can do better. So, I use Opera from the last week untill now. To tell you the truth, in general, I'm okay with it, I don't have a problem. In fact, there are many that chrome didn't have and I liked it. But yesterday and today, I faced the following problems:

1. Why is there this problem on youtube? This is a live video. There is no problem in Chrome
   
2. Why is there this problem on twitter? It plays perfect at chrome.
   
3. And, finally, why is there this problem at the following popular site? I clicked to a video in order to watch it for my PhD paper and the "Play" icon + the other two look weird and I cannot play the video. When I click to the play button, the following black screen is showed up and I still cannot play the video.
   
   

I use MX Linux

Sorry for my bad English. This is not my native language.