Hello Boping,
The name of the USB camera device node changes between video0 and video63, so your problem is not BSP or driver. You need to query the existence of videox and open it once in the application layer software. That's all right. There are many peers on the Internet to meet your needs.
USB camera设备节点名字会在video0~video63之间变化，因此，您的问题不是BSP和driver的问题。你需要在应用层软件中，一次去查询videox是否存在，存在则打开。这样就可以了。网上有很多同行实现了您的需求。
1. 解决Android USB摄像头热擦拔问题 - gooogleman#foxmail.com - CSDN博客
2. usbcamera热插拔后无法打开的问题-CSDN论坛
Have a nice day!
NXP TIC Weidong
