【KV260视觉入门套件试用体验】+06.视频推流测试（zmj）

【KV260视觉入门套件试用体验】+06.视频推流测试（zmj）

KV260视觉入门套件的USB摄像头（UVC）借助mjpg-streamer实现网页监控推流十分便捷。

---------------------------以下为正文---------------------------

1. 下载编译

下载编译流程如下：

//------mjpg-streamer
//---下载
git clone https://github.com/jacksonliam/mjpg-streamer.git
cd mjpg-streamer
cd mjpg-streamer-experimental
gcc -v
//---依赖项/依赖库的安装
sudo apt install cmake
sudo apt-get install -y cmake libjpeg62-turbo-dev
//---编译安装mjpg-streamer
sudo apt install cmake
make all
sudo make install  //需要sudo权限才能安装
//---测试指令
sudo /usr/local/bin/mjpg_streamer -i "input_uvc.so -d /dev/video0 -r 1280x720 -y" -o "output_http.so"
部分测试配置（自动）如下所示：
	设备：/dev/video0
	分辨率：1280*720（720P）
	帧率：1帧/秒（此种情况下节省网络带宽，降低CPU占用率）
	格式：YUYV
	端口：8080
//---访问方式（PC端和手机端均OK）：
A.家中IP地址是：192.168.1.103
http://192.168.1.103:8080/?action=stream
B.单位IP地址是：192.168.7.25
http://192.168.1.103:8080/?action=stream

2. 测试结果

最终呈现效果是网页端实时刷新（1帧/秒）摄像头结果，同一局域网内在PC端和手机端均能正常查看推流效果。

//---测试指令
sudo /usr/local/bin/mjpg_streamer -i "input_uvc.so -d /dev/video0 -r 1280x720 -y" -o "output_http.so"
部分测试配置（自动）如下所示：
	设备：/dev/video0
	分辨率：1280*720（720P）
	帧率：1帧/秒（此种情况下节省网络带宽，降低CPU占用率）
	格式：YUYV
	端口：8080
//---访问方式（PC端和手机端均OK）：
A.家中IP地址是：192.168.1.103
http://192.168.1.103:8080/?action=stream
B.单位IP地址是：192.168.7.25
http://192.168.1.103:8080/?action=stream

//------测试Log
ubuntu@kria:~/zmj_ws/camera$ \
> ./mjpg_streamer -h
-----------------------------------------------------------------------
Usage: ./mjpg_streamer
  -i | --input "<input-plugin.so> [parameters]"
  -o | --output "<output-plugin.so> [parameters]"
 [-h | --help ]........: display this help
 [-v | --version ].....: display version information
 [-b | --background]...: fork to the background, daemon mode
-----------------------------------------------------------------------
Example #1:
 To open an UVC webcam "/dev/video1" and stream it via HTTP:
  ./mjpg_streamer -i "input_uvc.so -d /dev/video1" -o "output_http.so"
-----------------------------------------------------------------------
Example #2:
 To open an UVC webcam and stream via HTTP port 8090:
  ./mjpg_streamer -i "input_uvc.so" -o "output_http.so -p 8090"
-----------------------------------------------------------------------
Example #3:
 To get help for a certain input plugin:
  ./mjpg_streamer -i "input_uvc.so --help"
-----------------------------------------------------------------------
In case the modules (=plugins) can not be found:
 * Set the default search path for the modules with:
   export LD_LIBRARY_PATH=/path/to/plugins,
 * or put the plugins into the "/lib/" or "/usr/lib" folder,
 * or instead of just providing the plugin file name, use a complete
   path and filename:
   ./mjpg_streamer -i "/path/to/modules/input_uvc.so"
-----------------------------------------------------------------------
ubuntu@kria:~/zmj_ws/camera$ \
> sudo /usr/local/bin/mjpg_streamer -i "input_uvc.so -d /dev/video0 -r 1280x720 -y" -o "output_http.so"
MJPG Streamer Version: git rev: 310b29f4a94c46652b20c4b7b6e5cf24e532af39
 i: Using V4L2 device.: /dev/video0
 i: Desired Resolution: 1280 x 720
 i: Frames Per Second.: -1
 i: Format............: YUYV
 i: JPEG Quality......: 80
 i: TV-Norm...........: DEFAULT
UVCIOC_CTRL_ADD - Error at Pan (relative): Inappropriate ioctl for device (25)
UVCIOC_CTRL_ADD - Error at Tilt (relative): Inappropriate ioctl for device (25)
UVCIOC_CTRL_ADD - Error at Pan Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_ADD - Error at Tilt Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_ADD - Error at Pan/tilt Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_ADD - Error at Focus (absolute): Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Pan (relative): Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Tilt (relative): Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Pan Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Tilt Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Pan/tilt Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Focus (absolute): Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at LED1 Mode: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at LED1 Frequency: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Disable video processing: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Raw bits per pixel: Inappropriate ioctl for device (25)
 o: www-folder-path......: disabled
 o: HTTP TCP port........: 8080
 o: HTTP Listen Address..: (null)
 o: username:password....: disabled
 o: commands.............: enabled
 ^[^Csetting signal to stop //手动Ctrl+C退出//
 i: cleaning up resources allocated by input thread
 o: cleaning up resources allocated by server thread #00
force cancellation of threads and cleanup resources
done
ubuntu@kria:~/zmj_ws/camera$

//------测试结果：

//------end