When uploading or editing a video, the Edit Details section of the video has a field for 'Custom URL'. Use this field to enter the web address (URL) where you have embedded the video. If this is left empty, then the social share buttons will direct the user to the Gbox-hosted channel for your videos.
To add a Custom Video URL for your video, click on the Videos tab, click the Edit button for the video of interest, and fill in the Custom Video URL field below the Description area (shown below), and click save.
Now, when a user clicks on a social share button, the abbreviate URL will expand to be the URL entered above. Note that the link you see initially will be a gbox.video link, but it will redirect to the custom address you entered above.