When trying to stream MP4 I'm using this command line: cvlc v4l2:///dev/video0 :input-slave=alsa:// :v4l2-input=1 :v4l2-caching=300 --sout '#transcode{vcodec=mp4v,acodec=mp3,vb=200,scale=1,deinterlace,fps=25,samplerate=44100,ab=32}:duplicate{dst=std{access=http,mux=ffmpeg{mux=mp4},dst=:1234/camera.m...