查看“︁CubieTruck:抓取usb摄像头到rtmp”︁的源代码

<source lang="bash">
apt-get update

apt-get install libavcodec-extra
apt-get install libav-tools
apt-get install v4l-utils
</source>
查看usb摄像头：
<source lang="bash">
v4l2-ctl –list-devices
</source>
输出如下则证明摄像头正常：
<pre>
root@cubietruck:~# v4l2-ctl -list-devices
Video input set to 0 (Camera 1: ok)
                     brightness (int)    : min=-64 max=64 step=1 default=0 value=0
                       contrast (int)    : min=0 max=95 step=1 default=34 value=34
                     saturation (int)    : min=0 max=128 step=1 default=42 value=42
                            hue (int)    : min=-40 max=40 step=1 default=0 value=0
 white_balance_temperature_auto (bool)   : default=1 value=1
                          gamma (int)    : min=72 max=500 step=1 default=106 value=106
           power_line_frequency (menu)   : min=0 max=2 default=1 value=1
                      sharpness (int)    : min=0 max=10 step=1 default=7 value=7
         backlight_compensation (int)    : min=0 max=1 step=1 default=0 value=0
                  exposure_auto (menu)   : min=0 max=3 default=3 value=3
         exposure_auto_priority (bool)   : default=0 value=1
                     brightness (int)    : min=-64 max=64 step=1 default=0 value=0
                       contrast (int)    : min=0 max=95 step=1 default=34 value=34
                     saturation (int)    : min=0 max=128 step=1 default=42 value=42
                            hue (int)    : min=-40 max=40 step=1 default=0 value=0
 white_balance_temperature_auto (bool)   : default=1 value=1
                          gamma (int)    : min=72 max=500 step=1 default=106 value=106
           power_line_frequency (menu)   : min=0 max=2 default=1 value=1
                      sharpness (int)    : min=0 max=10 step=1 default=7 value=7
         backlight_compensation (int)    : min=0 max=1 step=1 default=0 value=0

</pre>
开始推送流媒体：
<source lang="bash">
avconv -f video4linux2 -r 25 -s 640X480 -i /dev/video0 -f flv rtmp://{ip}/live/
</source>
[[Image:Avconv_Webcam.png|600px]]

[[Image:PotPlayer_rtmp.png|600px]]

[[Category:Linux/Unix]]

[[Category:Linux/Unix]]