Zdeněk Gromnica

Can you explain what you mean by “I opened a link having youtube video as an embedded video”?

This isn't supported or planned at the moment, sorry. I recommend clicking the “YouTube” button inside the embedded player, which will take you to the full YouTube video where you...

Click the “YouTube” button inside the embedded player, which will take you to the full YouTube video where you can take a screenshot. 

Can you say why you would want to change the shortcuts?

What do you mean by transcript? The subtitles?