I don't install node-red-contrib-rtsp-client

[knolleary]

The post you link to includes the instructions for how to install it. You have not run the command given in the instructions.

@BartButenaers

Note that my node is also not on npm yet, so you also need to install it directly from Github (from within your .node-red folder!!!):

npm install bartbutenaers/node-red-contrib-rtsp-client

You need to add the rtsp url of your cam into this node, and the path to your ffmpeg executable.