ApsaraVideo Live:Configure stream delay

Limits

• A delayed stream is counted as a source stream. If the upper limit of source streams is exceeded, the server disconnects the excess source streams. You can view the usage on the Basic Information tab of the Basic Settings page for a streaming domain. For information about how to increase the quota of source streams, see Quota management.

• The stream delay feature is available only in the China (Beijing) and China (Shanghai) regions.

Procedure

1. Log on to the ApsaraVideo Live console.

2. In the left-side navigation pane, click Domain Names. The Domain Management page appears.

3. Find the streaming domain that you want to configure and click Domain Settings in the Actions column.

4. Choose Streaming Management > Advanced Settings.

5. On the Stream Delay Settings tab, click Add to add a stream delay template.

   The following table describes the parameters of a stream delay template.

   Parameter	Description
   AppName	The name of the application. The value must be the same as the application name specified in the ingest URL for the template to take effect. The value is case-sensitive. If you specify an asterisk (*) as the value, all application names are matched.
   StreamName	The name of the live stream. The value must be the same as the stream name specified in the ingest URL for the template to take effect. The value is case-sensitive. If you specify an asterisk (*) as the value, all stream names are matched.
   Delay	The duration for which the playback of the live stream is delayed. Valid values: 16 to 3600. Unit: seconds.
   Triggered By	Ingest Parameters: Stream delay can be triggered only by specifying the alDelayTime parameter in the ingest URL. Configuration: Stream delay can be triggered only by the stream delay configuration. That is, stream delay is triggered if the application name and stream name specified in the ingest URL are the same as those specified in the stream delay template. Ingest Parameters > Configuration: Stream delay can be triggered by the alDelayTime parameter in the ingest URL or the stream delay configuration. The alDelayTime parameter takes precedence over the stream delay configuration. Note If you set Triggered By to Ingest Parameters or Ingest Parameters > Configuration, you can trigger stream delay by specifying the alDelayTime parameter in the ingest URL. The following rules apply to the ingest URL: Ingest URL with no access token: Ingest domain + AppName + StreamName + alDelayTime=xx, where xx indicates the delay in seconds. Example: rtmp://demo.aliyundoc.com/app/stream?alDelayTime=100 Ingest URL with an access token: Ingest domain + AppName + StreamName + Access token + alDelayTime=xx, where xx indicates the delay in seconds. Example: rtmp://demo.aliyundoc.com/app/stream?auth_key=1678354414-0-0-c4789ecbd37a23a20ad2e9973301dae9&alDelayTime=100 Generation time of the delayed stream: After the delay period is reached after the source stream is ingested, you can view whether the delayed stream is generated by checking the stream list in the ApsaraVideo Live console. If the source stream is interrupted within the delay period, the generation time of the delayed stream may be reset and recounted from the beginning.

   Note

   • The application name or stream name can be up to 255 characters in length and can contain digits, letters, hyphens (-), underscores (_), and equal signs (=).

   • After the configuration is complete, you can use a URL for delayed streaming to play the delayed stream. For more information about how to obtain the URL, see Generate ingest and streaming URLs.

6. Click OK.

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