# An audio source...
audio = sine()

# Encode it in mp3
audio = ffmpeg.encode.audio(%ffmpeg(%audio(codec = "libmp3lame")), audio)

# Send it to icecast
output.icecast(
  %ffmpeg(format = "mp3", %audio.copy),
  host="...",
  password="...",
  mount="/stream",
  audio
)

# A video source, for instance a static image
video = single("image.png")

# Encode it in h264 format
video = ffmpeg.encode.video(%ffmpeg(%video(codec = "libx264")), video)

# Mux it with the audio
stream = source.mux.video(video=video, audio)

# Copy encoder for the rtmp stream
enc = %ffmpeg(format = "flv", %audio.copy, %video.copy)

# Send to YouTube
key = "..."
url = "rtmp://a.rtmp.youtube.com/live2/#{key}"
output.url(url=url, enc, stream)

# Send to Facebook
key = "..."
url = "rtmps://live-api-s.facebook.com:443/rtmp/#{key}"
output.url(self_sync=true, url=url, enc, stream)