Uploading And Display Link

Hi, i want to add a section to my site so that my members can add a youtube video to their profile page.

I have added a section called My Video to the My Account section of my site.

I now want users to be able to enter a youtube link so that i can then display it on their profile page BUT i am not sure what link / url i should be asking the members to upload.

For example, there are 3 different links / options:
1 - the youtube url for this video is http://www.youtube.com/watch?v=f_JRZI9o49w
2 - the share url is http://youtu.be/f_JRZI9o49w
3 - the embed code is <iframe width=“853” height=“480” src=“http://www.youtube.com/embed/f_JRZI9o49w” frameborder=“0” allowfullscreen></iframe>

Q1 - what should i ask my members to upload

Q2 - what code should i build into my script so that when i call the member’s $youtube_video it will play the video back in my script

Thanks in advance for any help that you can give…

You will have to use the embedded URL for youtube video’s unless you use your own video player. Then the task becomes a little more tricky.