1, the former is transmitted by the self-run TV network;
The latter is transmitted by using the existing Internet network.
2. The former is transmitted by MPEG2-2 compression. At present, the line quality is high and the image is clear.
The latter has various transmission formats, such as MPEG2-2, RMVB or MWV, which can achieve higher definition. However, at present, due to the limitation of users' online mode, the former definition cannot be reached for the time being. ?
3. The former should use a special TV box; ?
The latter can only have a PC, of course, you can also use a special TV box. ?
4. The former has poor on-demand function and general interactive function; ?
The latter is not limited by time, can be ordered at will, and has super interactive function. ?
5. The former belongs to the radio and television department and is absolutely "monopolized";
The latter belongs to the telecommunications level and belongs to "semi-monopoly". At present, the state has authorized Shanghai Wenguang and CCTV to operate.
Extended reading:
1. In fact, in a broad sense, IPTV is also a kind of digital TV, but the difference is that the bearer network it relies on is a public broadband network. Different from digital TV and cable TV, it is carried by cable TV network.
2. In addition, the on-demand function of network TV is not available in traditional cable TV and digital TV, or the service is incomplete. Digital TV has an advanced set-top box, which can be used on demand, but the price is much more expensive than that of network TV, and the set-top box has to pay extra. You can figure it out yourself. So to put it simply, cable TV is cheaper than network TV, but its functions are not as much as network TV. Digital TV with on-demand function is much more expensive than network TV. From the perspective of cost performance, network TV is the most suitable.