Is it necessary when there is a brief explanation of the author that precedes the video?
Puma, I for one cannot see the videos, or even the text. I only see raw links. My computer needs to be set to minimize the drag on memory capacity and response time. That is one of the results.
A brief sentence describing the subject of the tweet would be considerate. When I quote tweets here, I copy the text from the tweet for others who may be in the same situation, along with the link. Then a person can decide if they want to view the tweet.