Functions

Huawei Cloud Stream Live provides a wide range of livestreaming functions, such as stream push, live video playback, recording, and transcoding. These functions make the service an ideal option for many latency-sensitive scenarios, such as online education and interactive entertainment. See Table 1.

HTTPS is recommended, as it is more secure than HTTP.

**Table 1** Functions
Type	Function	Description
Stream push	Protocol	RTMP push and streaming audio or video
	Method	Stream push using third-party software such as Open Broadcaster Software, XSplit, and FMLE
	Uplink acceleration	Supports uplink acceleration, user access point/device scheduling (DNS/HTTP DNS), access control, and auto scaling for live video.
Livestreaming	Protocol	Cloud Stream Live: RTMP, HTTP-FLV, and HLS Low Latency Live: WebRTC, which can be downgraded to HTTP-FLV
	Method	Cloud Stream Live: playback using third-party software such as VLC Low Latency Live: playback on web clients using the LLL online demo or API
	Downlink acceleration	Supports downlink acceleration, user access point/device scheduling (DNS/HTTP DNS), access control, and auto scaling for live video.
Stream processing	Recording	You can record a livestream in HLS, FLV, or MP4 format and store the recordings in OBS.
	Transcoding	You can transcode a livestream into different specifications using H.264, H.265, or low-bitrate HD transcoding.
	Snapshot capturing	You can capture snapshots from a livestream and save JPG snapshot files in OBS buckets.
	Delay	You can change the playback delay. NOTE: This function is not recommended for LLL.
	Origin pull	You can pull live content from your own origin server to a Huawei Cloud origin server for accelerated delivery.
Streaming	Management	You can manage livestreams on the Live console or by calling APIs.
Live console	Dashboard	You can view the downstream traffic and peak downstream bandwidth on the current day. You can change the CDN billing option.
	Streaming	You can view ongoing streams and disabled streams.
	Domain name management	You can add, delete, disable, and enable ingest domain names and streaming domain names. You can associate an ingest domain name with or disassociate it from a streaming domain name. You can configure transcoding, snapshot capturing, and stream status notifications for ingest domain names, and stream push authentication. You can configure the origin pull settings, HTTPS certificate, latency, URL validation, referer validation, and access control lists (ACLs) for streaming domain names.
	Usage Statistics	You can view the downstream bandwidth/traffic statistics of all streaming domain names, and the total transcoding duration, maximum number of concurrent recording channels, and number of snapshots of all ingest domain names.
	Service monitoring	You can view the downstream bandwidth/traffic, playback profile, status codes returned in the request response of a streaming domain name, and the number of online viewers of the corresponding livestream. You can also view monitoring information such as the upstream bandwidth/traffic, total number of pushed streams, and stream push frame rate/bitrate of an ingest domain name.
	Log management	You can view logs about requests to a streaming domain name and download logs over the past 14 days.
	OBS authorization	You can authorize Live to store captured snapshots in OBS buckets.
	Tools	You can quickly generate signed URLs for streaming and ingest domain names.
Access control	URL authentication	You can configure an authentication key to verify requests.
	Referer validation	You can configure a referer blacklist to identify and filter out unauthorized access.
	Access control list (ACL)	You can configure an IP address blacklist to identify and filter out unauthorized access.
	HTTPS secure acceleration	You can use the certificate of a streaming domain name to configure and deploy HTTPS for all CDN nodes on the network to secure livestreaming acceleration.
APIs	Domain name management	You can create, delete, modify, and query domain names. You can create and delete the mapping between a streaming domain name and an ingest domain name.
	Transcoding	You can query, modify, create, and delete transcoding templates.
	Streams	You can query and modify the status of streams and query live acceleration data.
	Access control	You can query, update, and delete the URL validation configuration of a specified domain name.
	Snapshot management	You can create, delete, modify, and query snapshot capturing templates.
	Log management	You can query livestreaming logs.
	Recording management	You can create, query, and delete recording templates, and record livestreams to OBS.
	Recording callback management	You can create, delete, and modify a recording callback, and query details of a recording callback. You can query the list of recording callbacks.
	HTTPS certificate management	You can query, modify, and delete the HTTPS certificate settings of a specified domain name.
	OBS bucket management	You can grant or cancel authorization of accessing OBS buckets.
	Statistical analysis	You can query traffic or bandwidth data, and peak bandwidth in a specific period.
	Stream analytics	You can view the frame rate and bitrate of a single livestream.
SDK	Server SDK	SDK helps you perform secondary development. The supported languages are: Java, Python, Go, and PHP.