Sorry about the delayed reply.
When you post, there is a youtube icon on editor post.
You simply need to Insert YouTube Video ID, in this format (Click on the Youtube Icon given above the post) and this will come
In between these two square brackets, add the ID of the video.
Suppose you wanted to upload this video : https://www.youtube.com/watch?v=PcUZyZU2PvM
So the id of the video is : PcUZyZU2PvM
So to post this video, all you need to do is this format:
Viola !!!! And you are good to go ...
Let me know, if this is what you were thinking or there is something else that is required. Would be glad to work it out.