Frequently Asked Questions

How to set and get SDK logs and stack information for Express?

How to select video resolution, frame rate, and bitrate?

How to upgrade Express from AppSign authentication to Token authentication?

How to cross-compile Linux v4l-utils dependency library?

How to cross-compile Linux alsa-lib dependency library?

What is the SDK installation package increment?

When running Java source code to generate Token, if an exception "java.security.InvalidKeyException

How to obtain and upload audio Dump files?

If the client integrates Express SDK, is it necessary to maintain the room?

How to remove a specified user from a room?

Why does Express SDK report error 1002001 when logging into a room?

Compilation error after upgrading to Express v2.20.0 or later?

How to perform authentication in the server-side API?

When using "switchRoom" to switch rooms, why does the error 1000002 - not logged in appear?

When Express SDKs on various platforms interoperate, are there any restrictions on userID/roomID/streamID?

When calling the createEngine interface to create an engine, if the room scenario is set to "voice call/voice chat room/KTV" and other scenarios, do I still need to actively call the "enableCamera" interface to close the camera?

Express SDK: Why can't I receive a callback after sending a real-time message?

When Express SDK logs out of a room, is it necessary to actively stop publishing and playing streams?

When using the "muteMicrophone" and "enableAudioCaptureDevice" interfaces and setting the parameter to false, what is the difference between them?

How to pass mixed stream name information between different users?

Does the "Real-time Messaging and Signaling" feature of Video Call (ZEGO Express SDK) support querying history messages?

When using CDN recording, if the streaming end experiences stream interruption, multiple recording files will be generated. How can these recording files be merged?

How to print SDK logs to the console using Express SDK?

Does Express server have an API to create a room?

Can the server's "stream creation" and "stream closure" callback notifications be guaranteed to be ordered?

When using Express SDK, what problems occur if different clients log in to a room with the same userID?

Can I implement an audio-only call scenario using the Video Call SDK?

How does Express create a room?

How to ensure smooth audio and video streaming in poor network environments (flow control)?

What solutions does ZEGO provide?

What is the difference between ZEGOCLOUD low-latency live streaming and other RTMP + CDN live streaming technology?

How to get a temporary Token for calling ZEGO SDK?

Which platforms does ZEGO Cloud Communication SDK support, and what are the system version requirements for each platform?

What are the characteristics of ZEGOCLOUD's audio processing?

How to get the SDK version number?

When using OBS or mini program platforms for streaming, can I view the streaming records in "Analytics Dashboard > Call Insights"?

How to configure domain CNAME?

If a user is in both real-time video and instant messaging rooms at the same time, when leaving the room, should I call the "logoutRoom" interface of Express SDK first, or the "leaveRoom" interface of ZIM SDK?

How to perform domain ownership verification?

Is there an administrator in each room during a call?

Does the multi-room feature require special configuration?

How to call server-side API online?

How to use bitmask?

How to define streamID appropriately?

How to mute a certain stream or all streams when playing streams?

Can "pic_url" in "Server Callback - Stream Creation Callback" be configured with SSL for content moderation?

When the network environment is poor, will Express SDK forcibly make users automatically exit the room?

How to monitor who is speaking in the room with Express SDK?

When mixing two streams, if one of them disconnects, will the stream mixing automatically stop?

When calling the "room user kick-out interface" to kick out a nonexistent user, will it report an error?

When using the server-side mixed stream API, what is the function of the "seq" value in the start mixed stream interface?

In an audio-only scenario, how to display a background image for stream mixing?

Why is the data returned by the backend stream creation and stream closure callbacks invalid when processed using "Form" format?

When using a wildcard domain to apply for an SSL certificate, why does the console prompt that the uploaded certificate does not match the domain when uploading the certificate?