Sometimes I only have luck embedding videos if they are the only thing in the post. No text, nothing but the embed code. And then I can't edit or the video will disappear.

Never attribute to malice that which can be adequately explained by stupidity.
(attributed to
Robert J. Hanlon)

People with true credibility and integrity don't need to tell other people how great they are. They also don't need to belittle other people to feel superior.
(msmith)