Intelligent Media Services:Add a source to a flow

Procedure

To add a source to an existing flow:

1. Log on to the Intelligent Media Services (IMS) console.

2. In the left-side navigation pane, select MediaConnect > Flows. On the Flows page, choose the one you want to add a source to.

3. On the Sources tab, click Add Source Stream. Configure the parameters in the right-side panel. For specific parameters based on the protocol, choose one of the following tabs:

   RTMP-PUSH

   

   Parameter	Description
   Source Name	Specify a name for your source stream. It supports letters, digits, hyphens (-), and underscores (_), with up to 128 characters.
   Protocol	RTMP-PUSH. It cannot be modified after the source is added.
   Max Bitrate	Specify a value based on your business requirements. Valid values: 100 to 100000000 bps. Stuttering may occur if the actual bitrate exceeds this limit.
   IP Address Whitelist	Specify IP addresses that are allowed to send content to the source. If the parameter is left empty, no access control is enforced.

   After the source is added, an RTMP URL is generated. Use this URL for stream ingest after starting the flow.

   

   RTMP-PULL

   

   Parameter	Description
   Source Name	Specify a name for your source stream. It supports letters, digits, hyphens (-), and underscores (_), with up to 128 characters.
   Protocol	RTMP-PULL. It cannot be modified after the source is added.
   Max Bitrate	Specify a value based on your business requirements. Valid values: 100 to 100000000 bps. Stuttering may occur if the actual bitrate exceeds this limit.
   Source URL	Specify an RTMP URL. After you start the flow, MediaConnect will pull the stream from the specified source URL.

   SRT-Listener

   

   Parameter	Description
   Source Name	Specify a name for your source stream. It supports letters, digits, hyphens (-), and underscores (_), with up to 128 characters.
   Protocol	SRT-Listener. It cannot be modified after the source is added.
   Max Bitrate	Specify a value based on your business requirements. Valid values: 100 to 100000000 bps. Stuttering may occur if the actual bitrate exceeds this limit.
   IP Address Whitelist	Specify IP addresses that are allowed to send content to the source. If the parameter is left empty, no access control is enforced.
   SRT Latency	Specify the latency for the SRT stream. Valid values: 100 to 10000 ms. If the latency is too low, stream interruptions may occur under unstable network conditions. If it is too high, there may be a longer delay in transmitting the stream. Set the value based on actual network conditions. If the network is stable, use a smaller value. If the transmission distance is long or the input/output region differs from the flow region, use a larger value to allow more room for error correction. You can obtain the IP address of the SRT service by creating an SRT listener and use the Ping command to measure the response latency of the IP address. This information helps you configure the appropriate latency.
   SRT Encryption	After you turn on SRT Encryption, the connection password must be configured on the caller side to establish communication.
   SRT Password	Specify a password for SRT connection. The password must contain between 10 and 79 ASCII characters.
   Key Length	The key length for Advanced Encryption Standard (AES). Unit: bytes. Valid values: 0, 16, 24, 32.

   After the source is added, an SRT URL is generated. Push the stream to this URL from your SRT client.

   

   SRT-Caller

   

   Parameter	Description
   Source Name	Specify a name for your source stream. It supports letters, digits, hyphens (-), and underscores (_), with up to 128 characters.
   Protocol	SRT-Caller. It cannot be modified after the source is added.
   Max Bitrate	Specify a value based on your business requirements. Valid values: 100 to 100000000 bps. Stuttering may occur if the actual bitrate exceeds this limit.
   Source URL	Specify an SRT URL. After you start the flow, MediaConnect will pull the stream from the specified source URL.
   SRT Latency	Specify the latency for the SRT stream. Valid values: 100 to 10000 ms. If the latency is too low, stream interruptions may occur under unstable network conditions. If it is too high, there may be a longer delay in transmitting the stream. Set the value based on actual network conditions. If the network is stable, use a smaller value. If the transmission distance is long or the input/output region differs from the flow region, use a larger value to allow more room for error correction. You can obtain the IP address of the SRT service by creating an SRT listener and use the Ping command to measure the response latency of the IP address. This information helps you configure the appropriate latency.
   SRT Encryption	If a password is configured on the listener side, you must turn on SRT Encryption. Otherwise, the SRT connection cannot be established.
   SRT Password	Specify the password configured on the listener side. The password must contain between 10 and 79 ASCII characters.
   Key Length	The key length for Advanced Encryption Standard (AES). Unit: bytes. Valid values: 0, 16, 24, 32.

   Flow

   You can use the output of one flow as the source for another, connecting multiple flows for flexible and scalable cross-region distribution.

   Note

   • If you set the protocol to Flow, the source does not support source failover.

   • Ensure that the source flow is running when you use the downstream flow.

   • The protocol of the source flow output must be RTMP-PULL or SRT-Listener.

   

   Parameter	Description
   Source Name	Specify a name for your source stream. It supports letters, digits, hyphens (-), and underscores (_), with up to 128 characters.
   Protocol	Flow.
   Flow ID	The ID of the source flow, which can be obtained on the flow details page.
   Output Name	The output of the source flow, which can be obtained on the Outputs tab of the flow details page.

   Note

   If you fail to add the output, check whether the flow ID and source name of the source flow are available.

4. Click OK to add the source.