The VideoLAN Forums

Seems to me like you're using the wrong tool for the job here. ffmpeg can be built with rtmpdump's librtmp, you could just use that. ffmpeg "rtmp://stream2.france24.yacast.net/france24_live/en app=france24_live/en swfUrl=http://www.france24.com/en/sites/all/modules/maison/aef_player/flash/playe...

The problem is there is no way to determine for any arbitrary RTMP URL which portion is the app name and which is the stream name. You have to provide that information yourself. With librtmp you append options to the URL to make it explicit: "rtmp://stream2.france24.yacast.net app=france24_live...