"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 principle of this live broadcast is to convert TV (analog) signals into digital signals through collection, 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.

On April 23rd, 2002/kloc-0, the State Internet Information Office, the Ministry of Public Security, the Ministry of Commerce, the Ministry of Culture and Tourism, the State Taxation Administration of The People's Republic of China, the State Administration of Market Supervision and the State Administration of Radio and Television jointly issued the Measures for the Management of Webcast Marketing (for Trial Implementation), which came into effect on May 25th, 2002/kloc-0.