If you’ve noticed, just today, PronounceDaily.com was removed from YouTube. Thousands of really helpful pronunciation videos were removed simultaneously after youtube.com/user/PronounceDaily was suspended in YouTube.com. The official PronounceDaily.com account was suspended due to multiple or severe violations of YouTube’s policy against spam, gaming, misleading content, or other Terms of Service violations.
Out of curiosity, I tested the auto-embed feature of WordPress if it still works in YouTube videos, and it still did. Check out the YouTube video below. I didn’t use an IFRAME at all and it still displays just fine.