Log-in to Hippo Video using your existing credentials.
Click on Library icon from the left navbar.
All your videos will be displayed here. Click on a video you wish to send out.
In the preview page, select Publish Video from the tab on the right.
Click on Post to Slack.
Select your workspace, channel name, and add comments if any, and click on Post when done.
You shall receive a notification confirming that the video has been posted to Slack.
You can now find the video in the channel you posted it to in the Slack webpage.