On the evening of March 17th, the construction online technology class began.
In view of the current hot application scenarios of low-delay livestream such as e-commerce livestream, online large-class classes and sports event livestream, we invited Xu Jianshu, the product leader of low-delay livestream product L3, to share the theme of “Schemes and applications of Low-delay livestream product L3”.
On the activity, Xu Jian tree mainly from the definition of “live low latency, low latency, broadcast live the implementation difficulties, low latency scenarios and applicable function advantage, low latency, live the future trend of the development of” four aspects to this paper introduces the low latency live is what, according to “live low latency and CDN live, the difference between the RTC, “Which scenes are more suitable for low delay live broadcast” and other common concerns of customers are analyzed in depth.
The following are excerpts from the event:
The rise of the concept of “low delay” stems from the fact that when live broadcasting was just popularized, there were few interactive links in live broadcasting and the host unilaterally controlled the scene, so the delay of a few seconds or even more than ten seconds was not obvious to users.
With the development of the live broadcasting industry in recent years, diversified forms of live broadcasting such as MAC live broadcasting, e-commerce live broadcasting, online classes and sports live broadcasting have emerged, making users have higher requirements for real-time, fluency and clarity.
The traditional CDN live broadcast adopts RTMP/HTTP-FLV/HLS protocol, which is based on TCP. However, TCP cannot further shorten the delay due to its own characteristics, and is not suitable for low-delay applications.
In this case, we need a low-delay live broadcast product with a delay of less than 1S, real-time synchronization of user viewing and stronger resistance of weak network.
Low-latency Live (L3) is an extension of real-time audio and video products in various vertical scenes. Compared with standard CDN Live products, the Live delay is as Low as 600-1000ms, the synchronization of pull end is stronger, and the resistance of weak network is better, which can bring users a new Live experience of millisecond level.
Therefore, we can see the differences among low-delay live broadcast, CDN live broadcast and RTC:
The delay of low-latency live broadcast is slightly higher than that of RTC interaction, but much lower than that of CDN live broadcast. It is more suitable for “large-scale live broadcast + low-frequency instant interaction” scenarios, such as e-commerce live broadcast in which the anchor answers the audience’s questions while introducing commodities, and carries out commodity killing and buying in seconds.
So technically, what are the technical difficulties of low delay live broadcasting? How can low-latency live broadcasting improve user experience in popular scenes such as e-commerce live broadcasting and sports live broadcasting? If you missed the live stream, click the link to view the replay: www.zego.im/salons/6078…
Questionnaire link: www.wjx.top/vj/hIIerwc….