Ultra Low Latency Live Streaming
Feature Introduction
ZEGO Ultra Low Latency Live Streaming (Low-Latency Live Streaming, L3) is born for high-quality experience, creating the ultimate live streaming experience with ultra-low latency, super-strong synchronization, extreme weak network resistance, ultra-low stuttering, ultra-clear picture quality, and first-frame instant opening. It is a "hexagon warrior" among live streaming distribution products.
Compared with traditional CDN live streaming, ZEGO ultra-low latency live streaming provides more stable and higher-quality live streaming distribution services based on full-link self-developed private protocols, Massive Sequential Data Network (MSDN), and end-to-end monitoring, helping the business side solve "live streaming experience" pain points, and is the common choice of many leading live streaming customers.
The ultra-low latency playing stream feature is not enabled by default. Please contact ZEGO technical support to enable the feature before use.
Feature Highlights
Ultra-low latency live streaming supports tens of millions of super-large concurrency, providing stable and high-quality live streaming distribution services, with the following 6 high-quality features:
| Feature | Characteristics |
|---|---|
| Ultra Low Latency | Live streaming latency of 600 ms ～ 1000 ms under normal network conditions. |
Super Strong Synchronization | Millisecond-level synchronization, synchronization error between different viewers < 400ms. |
| Extreme Weak Network Resistance | Supports extreme weak network resistance, up to 80% packet loss without disconnection, stable playback even in complex network environments. |
| Ultra Low Stuttering | Compared with CDN live streaming, using ZEGO ultra-low latency live streaming can reduce stuttering rate by up to 75% or more. |
| Ultra Clear Picture Quality | Provides rich picture quality optimization capabilities through All-in-one SDK, implementing user-level high-quality picture quality practices in various scenarios. |
| First Frame Instant Opening | Uses exclusive decoupled underlying architecture and provides instant opening strategies such as preloading live streams, supporting viewers to enter the room at super speed, achieving up to 99% domestic instant opening rate. |
Application Scenarios
Ultra-low latency live streaming can be applied to the following scenarios:
| Application Scenario | Description |
|---|---|
Overseas Live Streaming | Break through pain points such as high stuttering, slow first frame, and poor picture quality one by one, improving global viewers' live streaming experience, and global users enjoy live streaming social interaction. Break through bottlenecks such as poor overseas network environment, high proportion of mid-to-low-end devices, and poor broadcasting environment of amateur anchors, helping enterprises localize overseas. |
| Show Live Streaming | Provides essential show live streaming features such as instant opening and beautification, supports seamless switching solutions for multiple scenarios such as cross-room PK and live streaming to 1 V 1. While guaranteeing the live streaming viewing experience of all viewers, focuses on guaranteeing the experience quality of big anchors and paid users, effectively promoting paid user growth. |
Education Large Class | Ultra-low latency online classroom, perfectly compatible with diverse teaching plugins, providing excellent teacher-student interaction experience, making students' classroom progress consistent with teachers, and teaching immersion comparable to offline classrooms. |
| Gaming Live Streaming | In high-bitrate gaming scenarios, can adaptively transcode according to viewer bandwidth, effectively reducing stuttering rate, so that all viewers can watch gaming interaction smoothly. Based on HD low bitrate, effectively improves gaming picture quality at the same bitrate, not limited by viewer-side network bottlenecks. |
Sports Event Live Streaming | Millisecond-level latency and ultra-low stuttering, say goodbye to spoilers, grasp venue dynamics in real time, and don't miss any highlight moments. Supports 4K 60fps and HDR, presenting rich venue details and silky ultra-clear dynamic pictures. |
| E-commerce Live Streaming | Matches the strong real-time requirements of selling, anchors respond to viewers' shopping inquiries at super speed, improving anchor-viewer stickiness. Achieves strong synchronization and fairness for activities such as auctions, flash sales, and limited-time sales, stimulating live room user order conversion. |
| Watch Together | Global massive viewers can synchronously watch movies, concerts, or competitive competitions in the same live room. Low-latency, multi-terminal synchronized audio and video experience helps users communicate at zero distance happily, bringing immersive viewing experience. |
Prerequisites
Before implementing ultra-low latency live streaming features, please ensure:
- You have created a project in the ZEGOCLOUD Console and applied for a valid AppID and AppSign. For details, please refer to Console - Project Information.
- You have integrated the ZEGO Express SDK in the project and implemented basic audio and video publishing and playing functions. For details, please refer to Quick Start - Integration and Quick Start - Implementation Flow.
Usage Steps
Set the resourceMode parameter of ZegoPlayerConfig to ZegoStreamResourceModeOnlyL3, call the startPlayingStream interface, and pull the remote published ultra-low latency live streaming stream according to the passed stream ID parameter streamID, to implement ultra-low latency live streaming functionality.
ZegoPlayerConfig *playerConfig = [[ZegoPlayerConfig alloc] init];
playerConfig.resourceMode = ZegoStreamResourceModeOnlyL3;
[[ZegoExpressEngine sharedEngine] startPlayingStream: streamID canvas: playCanvas config:playerConfig];