1. Distortion caused by image transmission and compression: In the process of mobile phone live broadcast, in order to reduce bandwidth and network load, images are usually compressed, and the compression algorithm will lead to the loss and distortion of image details, and pockmarks are one of the manifestations.

2. Camera sensor problems: If there are some problems with the sensor of the mobile phone camera, such as bad spots or noise, these problems will directly affect the quality of the captured image, including pockmarks.