1，输入指令查看输入图像的分辨率以及帧率

v4l2-ctl -d /dev/video1 --list-formats-ext

查到参数以后，为deepstream-test3.c里cap的参数填写正确

2，参考链接

How to run deepstream-test3 with usb camera

Use YUY2 format as input

Do you run ‘v4l2-ctl’ command to get all modes? ‘848x480 YUYV 30fps’
is an example and you have to adapt it to your camera output.

numbuffer-> none，如果这个设有值的话，就会出现读取一段时间后自动跳转。
用指令查看相机输出的通道格式，并进行设置，但是我代码里直接设置的是NV12也是可以的。

Your code worked in my environment! I had changed some
properties(numbuffer-> none, UYVY->YUY2 a