The Video node sends a video to the chatbot from a local file or from a URL or from a Buffer passed by an upstream node (the simplest way to use it to chain with to File node or a Http node).

Some file types are not supported by a specific platform, for example Telegram and Facebook Messenger only supports .mp4. Different video format che be sent with the Document node.

To programmatically send a video, in the upstream Function node

msg.video = '/my/local/my-video.mp4';
return msg;

Or using a Buffer:

msg.payload.document = new Buffer(<my-video-buffer>);
msg.payload.filename = 'my-video.mp3';
return msg;

In case the upstream node pass through a Buffer, the node tries to extract a proper file name (visible to user in the chat client) using the payload of the upstream File node or the name of the node itself.