Feature overview - Intelligent Media Services - Alibaba Cloud Documentation Center

This topic outlines the features of Alibaba Cloud Real-time Communication (ARTC).

Basic features

Feature	Description
ARTC application management	Create an ARTC application to enable features such as calls, voice chats, and meetings.
Common video operations and configurations	Configure video encoding attributes.
Common audio operations and configurations	Perform common audio operations and configure audio settings in the ARTC SDK.
Channel connection status management	Understand the various channel connection states, the causes of state changes, and the recommended actions.
Screen sharing	Share your screen with other users by using the ARTC SDK.
Voice changer, reverb, and vocal beautification	Apply voice changer, reverb, and voice beautification effects during RTC sessions.
Device testing before a call	Test your audio and video devices before a call.
Network quality testing before a call	Test network quality before a call.
SEI transmission	Transmit custom data from the RTC system to ApsaraVieo Live or third-party live streaming platforms.
Automatic stream ingest and pulling	Automatically ingest and pull streams.
Custom messages	Send and receive custom messages when you transmit audio and video data.
Quality monitoring	Query application-level metrics, such as video/audio rebuffering rate, to assess the quality of your RTC services.

Advanced features

Category	Feature	Description
Media stream encoding and processing	Common video operations and configurations	Configures various video encoding properties.
	Set audio encoding mode and scene mode	Configures audio encoding properties and audio scenes.
	Implement screen sharing	Implements screen sharing features on different devices, including Windows, iOS, and Android.
	Custom video capture	Supports custom video capture, allowing you to manage video devices.
	Custom video rendering	Supports using custom video rendering modules to process and play back videos.
	Raw video data processing	Obtains video data captured by the SDK through different types of video observers and process it.
	Custom audio capture	Supports custom audio collection, allowing you to manage audio devices.
	Custom audio playback	Supports using your own playback module to process and play back audio.
	Play and push external audio inputs	Supports local playback and ingestion of external audio inputs.
Device and routing management	Device detection before a call	Detects devices before a call to prevent troubleshooting difficulties during the call.
	Test network quality before a call	Detects the local network quality before joining a channel.
	Manage video capture devices	Enumerates video input and output devices on different platforms, such as iOS, Android, Windows, and obtains detailed information, such as device names and IDs, allowing you to make selections.
	Configure audio routing	Supports customizing the audio playback device based on your business scenarios and requirements.
Communication and connection management	Cross-channel subscription	Enables communication between different channels.
	Manage channel connection states	Notifies you of channel connection states, reasons for state changes, and appropriate handling methods.
	Automatic stream ingest and pulling	Your app only needs to call the interfaces for joining channel, leaving channel, and role switching to implement audio and video streaming.
Data transmission and sound effects	Send and receive SEI messages	Sends custom messages from the ARTC system to ApsaraVideo Live or a third-party live streaming platform.
	Send and receive custom messages	Sends custom real-time message data while transmitting audio and video data.
	Configure voice change, reverberation, and voice beautification	Provides various built-in audio enhancement features, including voice changing effects, reverberation, and voice beautification, which can be used during real-time communication.