# arecord -l # ffmpeg -f alsa -i "hw:0,0" -ac 1 -ar 8000 -ab 64 -acodec pcm_mulaw -f rtp rtp://239.0.0.1:1234 # ffplay -nodisp rtp://239.0.0.1:1234 -reorder_queue_size 0 -loglevel 0