Focus on the main idea just only 1 or 2 points is enough.
Manage the length of the text as well. Should not be too long. Wait behind the audience to read.
Emphasize the point that audiences do want to call the call center or click or to play games etc.
The brand stands out all the time, such as a logo ad displayed on every frame.
The banner that interact as a game to play. Or play with their mouse to click a link or banner to go to read more.
Online video tends to work better together with other offline campaigns.
Make a replay button on the banner.
The Close button (close) the obvious. In the case of a floating ad banner or other forms of interruption to end users (usually close button should be on the top right corner).
Characters to communicate the main ideas instead of sounds. (Because most users tend to mute).
Users have the option to turn on or turn off the sound of that advertising.