Access the camera separately through the web page, and in the configuration interface, select the image, display settings, exposure, exposure time, and set. 【If there is no shutter menu, just adjust the exposure time】
The role of exposure time: adjust the sampling frequency of the sensor

Recommendation: In a scene with sufficient brightness, the smear can be appropriately reduced to improve the smear, and it is recommended to keep it at 1/25s for a scene with insufficient brightness