项目-摄像

 树莓派摄像头使用方法 Camera教程

https://www.raspi.cc/index.php?c=read&id=53&page=1

nanopc-t4

​https://www.raspi.cc/index.php?c=read&id=53&page=1

摄像头型号

Raspberry Pi Camera Rev 1.3

检测故障

dmesg | grep -i mipi

pi@NanoPC-T4:~$ dmesg | grep -i mipi
[    2.528023] rockchip-mipi-dphy-rx: No link between dphy and sensor
[    2.528584] rockchip-mipi-dphy-rx: No link between dphy and sensor
[    2.530501] rockchip-mipi-dphy-rx: No link between dphy and sensor
[    2.531073] rockchip-mipi-dphy-rx: No link between dphy and sensor

https://wiki.friendlyelec.com/wiki/index.php/NanoPC-T4/zh#gst-camera.sh_.E5.8F.82.E6.95.B0.E8.AF.B4.E6.98.8E

运行

gst-camera.sh --action preview

报错

gst-launch-1.0: no process found
/usr/bin/gst-camera.sh: line 178: [: =: unary operator expected
====================================================
=== GStreamer 1.1 command:
=== gst-launch-1.0 v4l2src device= io-mode=4 ! videoconvert ! video/x-raw,format=NV12, !
====================================================
/usr/bin/gst-camera.sh: line 194: [: too many arguments
su: must be run from a terminal

运行

sudo gst-camera.sh --action preview

报错

gst-launch-1.0: no process found
/usr/bin/gst-camera.sh: line 178: [: =: unary operator expected
====================================================
=== GStreamer 1.1 command:
=== gst-launch-1.0 v4l2src device= io-mode=4 ! videoconvert ! video/x-raw,format=NV12, !
====================================================
/usr/bin/gst-camera.sh: line 194: [: too many arguments
ERROR: pipeline could not be constructed: could not parse caps "video/x-raw,format=NV12,".

• gst - launch - 1.0是 GStreamer 多媒体框架中的一个命令行工具。GStreamer 是一个用于构建流媒体应用程序的库，它允许开发者创建各种多媒体处理管道，包括音频和视频的播放、录制、编辑以及格式转换等功能。

sudo apt-get update
sudo apt-get install gstreamer1.0-tools
sudo apt-get install gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav
sudo apt-get install gstreamer1.0-tools
gst-launch-1.0（注意，应替换为实际管道）。

查看gst-launch-1.0是否正常，以下命令会播放测试视频

gst-launch-1.0 videotestsrc ! autovideosink

输出没问题，证明gst-launch-1.0正常，接下来排除摄像头驱动的故障

https://cloud.tencent.com/developer/article/1421907

推流

教程：

https://zhuanlan.zhihu.com/p/668110375
https://juejin.cn/post/7310046632672919578
linux推流教程
https://blog.youkuaiyun.com/weixin_54613775/article/details/137523538
https://blog.youkuaiyun.com/qq_40959462/article/details/129208947
https://blog.youkuaiyun.com/aiq8620/article/details/101265706

rm -rf ~/.config/obs-studio/plugins/obs-rtspserver/bin/64bit/
rm -rf ~/.config/obs-studio/plugins/obs-rtspserver/data/
rm -rf ~/obs-rtspserver-linux

8.1安装开源视频流服务器EasyDarwin

在https://github.com/EasyDarwin/EasyDarwin/releases下载文件

8.2解压文件，unzip EasyDarwin-linux-x86_64-v7.2.17.0308.zip

8.3将EasyDarwin-linux-x86_64-v7.2.17.0308.zip中的文件easydarwin.xml复制到/etc/streaming中，切换至EasyDarwin-linux-x86_64-v7.2.17.0308目录启动软件 ./easydarwin

8.4下载所需视频

mkdir -p /data/video

cd /data/video

wget https://kubeedge.obs.cn-north-1.myhuaweicloud.com/examples/helmet-detection-inferen

ce/video.tar.gz

tar -zxvf video.tar.gz

8.5安装rtsp服务，安装live555或mediamtx，在https://github.com/bluenviron/mediamtx

/releases中下载mediamtx

8.6切换至mediamtx目下，启动服务./mediamtx

8.7进行推流ffmpeg -re -i /data/video/video.mp4 -vcodec libx264 -f rtsp rtsp://localhost:8554/video