[SOLVED] Template "Artist": How to change the video in the menu "News" and...

Hello there.
I don't know why but the video above is no longer visible at the best anymore. I've the Joomla 5.1.4 and the template "Artist" with all the latest updates. Unfortunately the video appears blurry, foggy, dark and therefore cannot be seen well anymore. How do I make it look good again or how do I change it? I'm talking about the video whose original is represented in the attachment. Please let me know asap.
Thanks a lot in advance.
Kind regards

We do not change the image quality or the view of videos. 
Maybe upload a different video and test it.

How was the video embedded? 
In the template options as a background or with the UIKIT module?

Always provide a link for design question.

Hello.
Let me explain better. The video that I embedded in the template was visible well in the front end but now, I don't know why, it is no longer visible well. The video is blurry, it's dark, you can't see it well anymore. Moreover, I can't find it in the template options anymore and so I can't even replace it; can you please help me?

Hello there. I've solved by myself. I found it in the template options and in "Design settings" I set "None" the "Overlay color". So I've solved this issue.
Have a nice day. Kind regards