Live broadcast to the sea | The domestic live broadcast room has another explosive product, how to win the world with "outward volume"

(click to register)

From Genghong Girls to New Oriental Bilingual Live Studio, the recent "out of the circle" events are almost all brought by live broadcasts. *This article is transferred from the public account [Rongyun Global Internet Communication Cloud], reply to the lottery and receive benefits.

The online live broadcast industry has continued to develop steadily, and has achieved breakthroughs and coverage to the entire population. According to iiMedia Research, the number of online live broadcast users in China is expected to reach 660 million in 2022.

The driving force behind the prosperity and development of the live broadcast economy is the combined effect of favorable national policies and the gradual improvement of the industrial chain.

China's online live broadcast industry map, source: iiMedia Research

According to iiMedia Research, the number of MCN institutions in China will exceed 30,000 in 2021, and it is expected to exceed 47,000 by 2023. This means that domestic live broadcast operations continue to develop towards specialization, refinement, and standardization, providing strong support for the sustainable development of online live broadcasts.

Recently, the relevant person in charge of the National Bureau of Statistics said that by the end of 2021, there will be 200 million people in flexible employment in China. The continuous evolution of the economic form has provided more career directions for the new generation of job seekers. Among them, the anchor is a new occupation that has exploded recently. The number of people engaged in the anchor industry and related practitioners in my country has reached more than 1.6 million.

In the entire industry chain, the role of technical services cannot be underestimated.

With the accumulation of a large number of use cases, communication cloud service providers such as Rongyun have not only summarized targeted solutions for live broadcast scenarios, but also completely packaged business logic and provided out-of-the-box scenario-based SDKs .

The product has built-in capabilities such as multiple confluence layouts and connected PK, which makes the linkage between anchors more convenient, and uses technical strength to meet the operational needs of current live broadcast applications such as user retention and activation, which greatly improves industry productivity.

Under the current situation of fierce competition in the domestic industry and user growth hitting the ceiling, going overseas has become the focus of various social pan-entertainment Internet companies .

Rongyun summarizes and sorts out the best practices at home and abroad, provides one-stop solutions, and targets to solve many oncoming problems when the live broadcast business goes overseas.

---

Diverse network devices

The live broadcast application has been developed for many years. From the perspective of the anchor interactive gameplay, it can be divided into single anchor live broadcast, single-room live broadcast, and cross-room live broadcast . From the perspective of media types, it can be divided into audio live broadcast, video live broadcast , and various types of interaction that combine audio and video. play.

(Main categories of live broadcast applications)

As more and more live broadcast companies choose to enter the overseas market, it is difficult to create a phenomenal application by completely borrowing the domestic product form and operation model. According to the beliefs, customs and living habits of users in different countries and regions, we can find new growth points by exploring new "localized" gameplay according to local conditions.

Going overseas will undoubtedly bring more challenges to the overall technical capabilities of live broadcasts. The first is the complex and diverse problems of networks and terminals . After all, this directly affects the core experience indicators such as sound quality fidelity, picture quality clarity, and fluency of live broadcasts.

The diversification of global networks involves differences in network types, infrastructure differences, and restrictions on private line construction. In countries with different development stages overseas, the terminal situations used by users are very diverse . For example, low-end and mid-end devices have very high requirements on product performance, and iOS and Android systems face multi-version compatibility issues during the rapid iteration process.

Rongyun has multiple independent data centers overseas, with thousands of access nodes covering 233 countries and regions around the world , providing stable overseas links, optimal communication quality, secure data backup and reliable business disaster recovery ability.

For global links, Rongyun has built a monitoring system. Through this platform, you can query the service quality of the user's access point, access device, and the version of Rongyun SDK used , and you can also get the relevant information of the user's subscription stream in the business process, and use various monitoring points to monitor the overall audio quality. The video service status is monitored, which is convenient to quickly locate the root problem and accurately formulate the optimization plan.

Specific to the live broadcast scenario, Rongyun provides low-latency and more flexible audio and video services for overseas developers based on the underlying communication capabilities of IM + RTC accumulated for many years.

Low Latency:
Rongyun takes the "IM+RTC+X" full communication solution as the framework, adopts a distributed communication network for audio and video, and incorporates both RTC low-latency live broadcast and traditional CDN live broadcast.

(Rongyun low-latency live broadcast framework)

More flexible:
Through the flexible interface, developers can easily implement the publishing and subscription logic of audio and video streams in different scenarios.

The design of the Rongyun live broadcast solution fully considers the relationship between audio and video streams and the online status of personnel, allowing users to immediately resume online when the network is poor; it can also clear the connection status immediately after the user is offline to avoid "ghost microphones". wait for the situation to happen .

---

User "enthusiastic" room "crowded"

Compared with China, live broadcast users in many foreign regions are more or less expressive. Although different regions have a preference for certain categories of entertainment and social interaction due to differences in cultural customs, for example, users in the Middle East prefer chat rooms, and live game broadcasts are more popular among enthusiastic Latin American users. But in general , there are more people and the room is "crowded" .

Taking Yuchaofang as an example, the 1+8 wheat slot model is generally adopted in China, while the overseas entertainment live broadcast scene is more lively, and the number of people accessing the wheat is increasing.

(more "lively" overseas applications)

First of all, the technical solution involves the layout of the window in the live broadcast room and the subscription stream on the viewer side .

Due to the different regions of each anchor, different network conditions, and insufficient network bandwidth on the viewer side, the stream that viewers subscribe to each anchor is prone to freeze. Rongyun recommends that the audience side pull and join the stream. The audience only needs to pull one stream to see all the anchors. There is a powerful layout and confluence service system in the Rongyun media service cluster, which not only supports the fusion of original video images in any layout, but also supports adding text or pictures to the video to meet the needs of live broadcast viewers to obtain the anchor information in a timely manner.

If application developers also want to add beautiful icons such as grade medals on the CDN viewer side page, they can also combine the read-write SEI function to transmit more information in the video stream to ensure that the annotations seen by the audience are synchronized with the video content in real time.

Rongyun also provides a live broadcast scene SDK , which has built-in 7 common live broadcast layout templates , which is convenient for developers to set up scenes through a few APIs.

(Rongyun live broadcast scenario solution)

Secondly, multi-person live broadcast is a great challenge to high-quality audio and video experience.
Rongyun combines traditional 3A algorithms and AI algorithms to create high-quality audio processing capabilities, allowing multiple people to speak and sing on the microphone at the same time.

The audience only needs to pull all the way to join the stream, and they can clearly hear the cheerful dialogue between the anchors. When multiple anchors are connected to the microphone, the anchor can unsubscribe from the audio of other anchors, and at the same time, it can prevent the sound from being transmitted to the audience. Only with these abilities can it be possible to open a party online now.

(Multi-player live broadcast viewers merge and pull)

Finally, the chat room of the live broadcast room also needs to be effectively managed for massive messages. In order to avoid the explosion of messages, many apps adopt the strategy of restricting users from sending messages frequently in a short period of time.

(Some apps restrict users from sending frequent messages)

The massive concurrency architecture of Rongyun IM chat room has been tried and tested , and supports the concurrency of massive messages in the chat room. At the same time, with years of experience in the entertainment live broadcast scene, Rongyun has developed a complete set of message speed control solutions.

The core of message speed control is the choice of messages, which requires prioritization of messages:

Whitelist messages have the highest level of importance, and general system notifications or management information will be set as whitelist messages;
High priority, second only to whitelist messages, messages without special settings are high priority;
Low priority, the lowest priority message, most of these messages are text messages.

Specifically how to divide, developers can set in the background or through the interface. The server implements different rate-limiting strategies for the three types of messages. When the concurrency is high, the low-priority message is most likely to be discarded.

The server stores three kinds of messages in three message buckets, and the client pulls messages in the order of whitelist messages > high priority messages > low priority messages.

---

In addition, live streaming not only requires localized interactive gameplay, but also establishes a content risk control system in combination with local policies. Sensitivity and knowledge of the local culture of the business are necessary conditions for risk control.

Rongyun cooperates with leading professional partners in the industry to help developers in social scenarios to accurately identify illegal content such as pornography, violence and terror in text, pictures, audio and video in instant messaging, real-time audio and video services, and meet the safety requirements of live broadcast scenarios. operational needs. Click to learn more