title: Switch between multiple stream inputs with nginx rtmp
body: <p>two colleagues of mine recently started streaming to Twitch together and wanted to create a setup where they could switch between their streams "live" (e.g. A is streaming, wants to end, B starts his stream and there is no interruption). Twitch obviously only allows one person at a time to stream to a specific channel/stream key and stopping one stream &amp; instantly starting the other one usually results in ~ 10 seconds "downtime".</p>
  
  <p>For this reason, I looked into setting up a server they can both stream to which can handle two inputs and push out one single stream to the Twitch ingest servers. I checked a few tutorials about setting up nginx and the rtmp addon for this purpose, however am running into the same issue of only one person being able to stream at a time. One possibility I figured would be to get a client streaming program like OBS or XSplit set up on the server which then displays streams from both nginx-rtmp inputs and switches scenes as needed, however both programs seem to require a graphics card for their live "preview" and thus don't work on my server.</p>
  
  <p>Is there any nginx-rtmp config or other clientside (optimally linux, but can be windows as well) solution I could use for combining two input RTMP streams into a single output stream? Switching between inputs can be done via hand as well if needed, as long as it works "live" and without interruption of the output.</p>
  
  <p>Thanks in advance!</p>