Hey @dizzyj in the future when you are sharing youtube links, watch out for the shortened URL that youtube is now using by default if you just click the share button to get the link - this form of URL won't play when embedded in a Steem post on some Steem front ends e.g. it won't work on steempeak.com (as @knowhow92 experienced below). Let me show you what I am talking about - the URL you shared here is not actually a youtube.com URL. You will note it is a shortened URL from the youtu.be domain: https://youtu.be/3ew6FWBol4I The actual URL you want to share on Steem is the actual youtube.com URL. Paste the shortened URL into a new tab and you will see it resolve into the proper youtube URL e.g. here is what your short link will resolve into:
https://www.youtube.com/watch?v=3ew6FWBol4I&feature=youtu.be You only need the first portion of that URL up to the ampersand (& symbol) so the URL you would want to share is: https://www.youtube.com/watch?v=3ew6FWBol4I which is a proper youtube.com URL, contains the actual identifier for your video (the string of numbers) and doesn't contain any other junk. Let me know if you have any questions. Cheers