Install USB sound card:
http://www.ibuyopenwrt.com/index.php/8-yun-compatible/62-usb-sound-card
opkg update opkg install alsa-utils opkg install ffmpeg opkg install lame-lib
arecord -l **** List of CAPTURE Hardware Devices **** card 0: Set [C-Media USB Headphone Set], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0
ffmpeg -y -f alsa -acodec pcm_s16le -ac 1 -ar 44100 -i hw:0,0,0 -t 60 -acodec mp2 /mnt/sda1/output.mp3
nano record.sh #!/bin/ash ffmpeg -y -f alsa -acodec pcm_s16le -ac 1 -ar 44100 -i hw:0,0,0 -t 60 -acodec mp2 /mnt/sda1/output.mp3 > /dev/null 2>&1
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