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diff --git a/backup/树莓派mjpg-streamer启动多个USB摄像头.md b/backup/树莓派mjpg-streamer启动多个USB摄像头.md
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+MJPG-streamer是一个优秀的开源项目，它可以通过HTTP的方式访问linux上面的兼容摄像头，从而做到远程视频传输的效果。本文主要记录树莓派4B配置的过程。
+
+我使用的树莓派是4B 2G内存版本，运行的是`Raspberry Pi OS Lite(32-bit) 2023-05-03`版本的系统。
+
+启动树莓派后，插入USB摄像头，可以通过`lsusb`和`ls /dev/video*` 查看USB摄像头有没有被正确挂载。
+
+### 安装库
+然后是下面必须要安装的库，特别注意`libjpeg9-dev`，网上的一些教程都是安装`libjpeg8-dev`
+
+```
+sudo apt-get update
+sudo apt-get install subversion
+sudo apt-get install libjpeg9-dev
+sudo apt-get install imagemagick
+sudo apt-get install libv4l-dev
+sudo apt-get install cmake
+```
+
+### 克隆编译
+
+```
+sudo git clone https://github.com/jacksonliam/mjpg-streamer.git
+cd mjpg-streamer/mjpg-streamer-experimental
+make all
+sudo make install
+```
+如果由于网络问题无法克隆的，可以直接下载`zip`包，然后解压安装
+```
+unzip mjpg-streamer-master.zip
+cd mjpg-streamer/mjpg-streamer-experimental
+make all
+sudo make install
+```
+
+### 运行
+
+如下指令中`/dev/video0`是对应的摄像头，`8080`是网页访问的端口号
+```
+mjpg_streamer -i "input_uvc.so -d /dev/video0 -n -f 10 -r 1280x720" -o "output_http.so -p 8080 -w www"
+```
+然后在浏览器中访问`http://[树莓派ip]:8080`就可以看到摄像头的画面了，里面还有一些配置就不多展开了。
+
+### 配置多摄像头
+```
+mjpg_streamer -i "input_uvc.so -d /dev/video0 -n -f 10 -r 1280x720" -o "output_http.so -p 8080 -w www" & mjpg_streamer -i "input_uvc.so -d /dev/video2 -n -f 10 -r 1280x720" -o "output_http.so -p 8082 -w www"
+```
+如此，访问`8080`端口和`8082`端口就是两个不同的摄像头了，增加多个摄像头同理。
+
+### 其他
+
+***fswebcam***
+通过安装`sudo apt-get install fswebcam`，然后`fswebcam --no-banner -r 640*480 camera.jpg` 可以在`/home/pi`目录下生成一个当前摄像头拍摄到的实时照片。以此证明USB摄像头工作正常。
+
+***motion***
+可参考：https://bun.plus/posts/monitoring-with-raspberry-pi-and-motion
+
+***restreamer***
+可参考：https://docs.datarhei.com/restreamer/getting-started/quick-start
+
+试用`motion`和`restreamer`都出现视频卡顿的问题，不知道是不是我没有配置对，但是`MJPG-streamer`是真的开箱即用，很方便。
diff --git a/blogBase.json b/blogBase.json
diff --git a/docs/index.html b/docs/index.html
@@ -111,6 +111,17 @@ <h1>
         <span class="Label" style="background-color:#D93F0B">软件</span>
         <span class="Label" style="background-color:#A333D0">2023-07-11</span>
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+</a><a class="SideNav-item d-flex flex-items-center flex-justify-between" href="post/shu-mei-pai-mjpg-streamer-qi-dong-duo-ge-USB-she-xiang-tou.html">
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+
+        <span class="Label" style="background-color:#D93F0B">软件</span>
+        <span class="Label" style="background-color:#A333D0">2023-09-26</span>
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+        <span class="Label" style="background-color:#1f883d">2018-04-16</span>
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