Poor network. "Webcast" can be roughly divided into two categories. One is to provide TV signals to watch on the Internet, such as live broadcasts of various sports competitions and cultural activities. The main reason for not entering Taobao live broadcast room is poor network. The principle of this live broadcast is to collect TV (analog) signals, convert them into digital signals, input them into computers, and upload them to websites for people to watch in real time, which is equivalent to "Internet TV"; The other is the well-known "webcast": independent signal acquisition equipment (audio+video) is set up on the spot and imported into the pilot terminal (pilot equipment or platform), and then uploaded to the server through the network and published on the website for people to watch.