Add a video to your entry form
If you’d like to display the video immediately when the entry form loads you can add it within the description area of your entry form. Just paste your video’s iFrame code into the description section. The video can also be added to the Thank You Confirmation message area of the entry form, which is displayed after the user completes the required portion of the form.
Getting video code from YouTube
To get the code for a video from YouTube (please be sure that you have the rights to use and embed this video) just click on the Embed link under the video. You can then set the video’s iFrame to a width of 430 pixels (this will automatically set the height to 323 pixels). You can then copy the iFrame’s embed code to place in your Description area.
Add YouTube subscribe buttons as entry methods in your giveaway.