English to French Bus/Financial Advertising / Public Relations Event for a singing competition

Context:
LIGHTS, CAMERA, ACTION!
When you arrive at the Roadshow event, there will be a live camera feed,
so you can step into the limelight by sending a video shout out on our Facebook page.

I also have an explanation from the client: VIDEO SHOUT OUT" means that a person can sent a video message or greeting to friends / family and post it on facebook

But I still do not know what is the French translation of this term.

Could the Facebook experts out there help?