To share a published video you need to assign permissions to users or groups.
Open the video from the email or from My Media.
When you click on the link in the email, you will open the player. Click on the info (i) button to show the meta data
Now select Edit to change the meta data and share the video with others.
Scroll down to the permissions and click Add
Now select user and type part of the user email.
Click on the correct user and continue with OK
Repeat these steps until you have invited all users or groups you need.
Click Save to commit changes and close the meta data configuration.