Product Features
2024-02-05
Communication Capabilities
Basic Features
| Basic feature | Feature description | Business scenario |
|---|---|---|
| Video Call | Users join the same Room and conduct Video Call. |
|
| Live streaming | In the same Room, including hosts and viewers, hosts can conduct live audio/video streaming, and viewers in the Room can watch the live stream. |
|
| User permission control | Use Token to control user permissions, such as: specifying users to enter/leave Room; specifying users to speak/mute; specifying users. | Video conference |
| Pre-call detection | Before Video Call or live streaming, perform device detection on cameras, microphones, monitors, etc., to ensure the normal operation of calls or live streaming. | Normal call function detection |
| Call quality monitoring | Detect the quality of audio/video, such as resolution, frame rate, bitrate, sampling rate, and other multi-index detection, to ensure stable quality. | Scenarios with high and specific requirements for audio/video quality, such as bank account opening and remote authentication |
| Network speed testing | Before users publish/play streams, detect uplink and downlink network speeds to determine the bitrate of audio/video streams suitable for publishing/playing under the current network environment. | Call scenarios, education scenarios, live streaming scenarios |
Advanced Features
| Advanced feature | Feature description | Business scenario |
|---|---|---|
| Live streaming co-hosting | Multiple hosts can appear in one Room for on-screen co-hosting live streaming. |
|
| Publish multiple streams simultaneously | A user can publish multiple audio/video streams, such as sending the camera's video stream while sharing the screen. | Viewing the presenter's screen while playing PPT in a video conference |
| Supplemental Enhanced Media Information (SEI) | Text information is packaged with audio/video content and transmitted through the streaming media channel to achieve precise synchronization between text data and audio/video content. |
|
| Flow control | ZEGO industry-leading technology. The SDK dynamically adjusts the video Stream Publishing bitrate, frame rate, resolution, and audio bitrate based on its own and the peer's current network environment status, automatically adapting to the current network environment and network fluctuations, thereby ensuring smooth video publishing. | All scenarios that hope to have high-quality real-time audio/video services |
| Cloud proxy | By setting the SDK's Cloud Proxy interface, all traffic corresponding to the SDK is forwarded through cloud proxy servers, enabling communication with RTC and L3 (Ultra-low latency live streaming). | Hospitals, government, company internal networks, and other restricted network environments |
| Geofencing | Restricts audio/video and signaling data transmission to a specific region to meet regional data privacy and security regulations, that is, limiting access to audio/video services in a specific region. | Call scenarios |
| Audio/video track replacement | In a browser, when there are two or more media streams locally (audio tracks, video tracks), you can freely combine the audio and video tracks contained in the media stream through ZEGO Express Web SDK. | Live streaming scenarios |
| In-game voice | Mimics the real world, where people have different auditory experiences based on factors such as the direction and distance of sound, for example, the farther away, the quieter the sound. At the same time, you can group and limit people who can receive the audio source, for example, in a Room, group discussions where different groups cannot hear each other. |
|
Room Capabilities
Basic Features
| Basic feature | Feature description | Business scenario |
|---|---|---|
| Room connection status description | Determine the user's connection status in the Room and the conversion process of each connection status. | - |
| Real-time messaging and signaling | Real-time messaging mainly provides the ability to send and receive pure text messages. You can send broadcast messages and bullet screen messages to other users in the same Room, or send custom messages to specific users, and implement interactive functions such as likes, gifts, and quizzes as needed. |
|
Advanced Features
| Advanced feature | Feature description | Business scenario |
|---|---|---|
| Login to multiple rooms | A user can simultaneously enter multiple rooms for Video Call or watch live streaming. | Teacher multi-class online teaching |
Audio Capabilities
Basic Features
| Basic feature | Feature description | Business scenario |
|---|---|---|
| Volume change | Volume change: the volume level of a specific stream. | Determine which user on the mic is speaking, whether the microphone and speaker are available |
| Headphone monitoring and sound channel settings |
|
|
| Audio 3A processing | During real-time Video Call or live streaming, you can perform 3A processing on audio to improve call or live streaming quality and user experience.
| All scenarios that hope to have high-quality real-time audio/video services |
| Voice changing/reverb/stereo sound | To increase fun and interactivity, users can use voice changing to be funny, use reverb to enhance the atmosphere, and use stereo sound to make the sound more three-dimensional. ZEGO Express SDK provides a variety of preset voice changing, reverb, reverb echo, and stereo sound effects. Developers can flexibly set the sound they want. |
|
Advanced Features
| Advanced feature | Feature description | Business scenario |
|---|---|---|
| Audio mixing | The SDK obtains a stream of audio data from the App and integrates the audio data provided by the App with the audio data Captured by the SDK into one stream of audio data, thereby achieving the ability to play custom sounds and music files during calls or live streaming, and letting others in the Room hear them. |
|
| AI noise suppression | ZEGO Express SDK provides AI noise suppression functionality. Developers can perform noise suppression processing on sounds when using the microphone to Capture sounds; based on traditional noise suppression that eliminates steady-state noise, it also processes non-steady-state noise (including mouse clicks, keyboard sounds, tapping sounds, air conditioner sounds, kitchen dish collision sounds, restaurant noise, environmental wind sounds, coughing, blowing sounds, and other non-human voice noises), retaining pure voice and improving the user's call experience. | Voice rooms, conferences, voice chat for gaming and other 1v1 or multi-person Video Call scenarios, as well as live streaming or online KTV scenarios for sound cards, impromptu singing, and near-field music |
| Custom audio Capture | Developers can obtain audio information themselves and hand it to the SDK for transmission. |
|
Video Capabilities
Basic Features
| Basic feature | Feature description | Business scenario |
|---|---|---|
| Common video configuration | During video calls or live streaming, customize and set relevant configurations for Capture and playback video, such as video Capture resolution, video encoding output resolution, video frame rate, bitrate, View mode, and Mirror mode, etc. |
|
| Screen sharing | Share screen content with other users in the Room as video during Video Call or interactive live streaming. |
|
| Basic beauty effects | When in a Video Call or live streaming, if you want to present a good skin condition to the other party, you can combine AI beauty effects to achieve basic beauty effect functionality. |
|
Advanced Features
| Advanced feature | Feature description | Business scenario |
|---|---|---|
| Set video encoding method | You can set video encoding and decoding in detail, including enabling layered video encoding, using hardware encoding and decoding, and setting encoding methods, etc. | When there are special requirements for encoding and decoding |
| Set video encoding attributes | ZEGO Express Web SDK supports two video encoding formats: H.264 and VP8. During Video Call, developers can choose the appropriate video encoding format based on business scenario requirements to achieve encoding alignment between different ends and achieve multi-end interoperability. | Video Call |
| Custom video Capture | Custom video input sources provided to ZEGO Express SDK input video data, and ZEGO Express SDK performs encoding and Stream Publishing functionality. |
|
| Background blur and virtual background | Separates the subject in the video frame from the original frame and processes the area outside the subject as follows:
|
|
Live Streaming Capabilities
Basic Features
| Basic feature | Feature description | Business scenario |
|---|---|---|
| Stream mixing | Mix multiple video streams from multiple people into one stream, so you only need to pull one stream to see the screens of all members in the Room and hear the sounds of all members in the Room. | Multi-person call host co-hosting |
| Use CDN live streaming | Unify access to multiple CDN capabilities. This function supports Stream Publishing to CDN, connecting RTC products and CDN live streaming products, making it convenient for users to watch live content directly from web pages or third-party players. | Basic live streaming with high concurrency and scenarios without strong requirements for live streaming latency |
| CDN Stream Publishing authentication | To prevent attackers from stealing the developer's Stream Publishing URL address to use elsewhere or forging the developer's server to generate the Stream Publishing URL address, resulting in traffic loss, you can configure CDN Stream Publishing authentication through the ZEGOCLOUD Console. After enabling authentication, relevant authentication parameters need to be spliced into the Stream Publishing URL address, otherwise Stream Publishing cannot be performed. | - |
Advanced Features
| Advanced feature | Feature description | Business scenario |
|---|---|---|
| Ultra-low latency live streaming | Focuses on providing stable and reliable live streaming services. Compared with standard video live streaming products, audio/video latency is lower, synchronization is stronger, weak network resistance is better, providing users with millisecond-level live streaming experience. |
|
| Use local broadcasting | Mix screens and sounds locally, merge multiple audio/video streams or page elements into one audio/video stream for Stream Publishing, helping developers achieve richer scenarios. | Live streaming scenarios |
Other Capabilities
Basic Features
| Basic feature | Feature description | Business scenario |
|---|---|---|
| Media player | Provides the ability to play audio/video media files and supports Streaming the audio and video data of the played media files. |
|
| Sound effect player | Provides a sound effect player and manages sound effects uniformly to achieve effects such as enhancing realism or setting the atmosphere for playing short effect sounds. |
|
| Audio/video recording | During video calls, live streaming, and online teaching, users often need to record and save videos for other users to watch on demand. ZEGO provides multiple recording solutions to meet recording needs in different scenarios. |
|
Advanced Features
| Advanced feature | Feature description | Business scenario |
|---|---|---|
| Push whiteboard to third-party platforms | Use the stream mixing functionality of ZEGO Express SDK to merge audio/video streams and ZegoSuperBoard content into one stream and output it to third-party platforms, such as WeChat, Video Account, etc., to achieve better dissemination and marketing effects. |
|