I did mine on OTM. When you are on the screen where you can preview your final product, click the "share and post online" link. Then the "grab links and codes" link. It will have you select the size you want the video screen to be then click continue. On the next page hit the select button for the middle "URL" option and it will highlight your link to your video. When it's highlighted blue, put your mouse over the highlighted area, right click and hit copy. When you are writing your post right click again and hit paste. This is exactly how I did it and it worked for me. I hope it works for you too! Good Luck