OSX low latency ffmpeg publisher with ffplay subscriber via wowza streaming engine

ffmpeg -f avfoundation -list_devices true -i ""
[AVFoundation input device @ 0x7f88b0422800] AVFoundation video devices:
[AVFoundation input device @ 0x7f88b0422800] [0] FaceTime HD Camera
[AVFoundation input device @ 0x7f88b0422800] [1] Capture screen 0
[AVFoundation input device @ 0x7f88b0422800] AVFoundation audio devices:
[AVFoundation input device @ 0x7f88b0422800] [0] Built-in Microphone
export RTMP_SERVER ""
export RTMP_APP live
export RTMP_STREAM chris
ffmpeg -f avfoundation -i "default":"default" -f nut pipe:1 | ffplay pipe:0
ffplay -fflags nobuffer rtmp://$RTMP_SERVER/$RTMP_APP/$RTMP_STREAM
ffmpeg -f avfoundation -i "default":"default" -pix_fmt yuv420p -s 284x164 -vcodec libx264 -preset ultrafast -tune zerolatency -f flv rtmp://$RTMP_SERVER/$RTMP_APP/$RTMP_STREAM


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