On the Youtube page when you view your video, click on the SHARE tab which appears greyed out under the video. Then click on EMBED. Then select an appropriate VIDEO SIZE. Then COPY the CODE that appears inside the box and PASTE into the post or thread start in RC. Once you've made the post it will appear. Video doesnt currently appear in initial PREVIEW mode when starting a thread or making a post.
Your video was just fine. Better than a lot of videos that get posted which are very shaky or crazy blue white balance.
Thanks for the info.