# Stream
<a name="API_Stream"></a>

Specifies a live video stream that has been ingested and distributed.

## Contents
<a name="API_Stream_Contents"></a>

 ** channelArn **   <a name="ivs-Type-Stream-channelArn"></a>
Channel ARN for the stream.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `arn:aws:ivs:[a-z0-9-]+:[0-9]+:channel/[a-zA-Z0-9-]+`   
Required: No

 ** health **   <a name="ivs-Type-Stream-health"></a>
The stream’s health.  
Type: String  
Valid Values: `HEALTHY | STARVING | UNKNOWN`   
Required: No

 ** playbackUrl **   <a name="ivs-Type-Stream-playbackUrl"></a>
URL of the master playlist, required by the video player to play the HLS stream.  
Type: String  
Required: No

 ** startTime **   <a name="ivs-Type-Stream-startTime"></a>
Time of the stream’s start. This is an ISO 8601 timestamp; *note that this is returned as a string*.  
Type: Timestamp  
Required: No

 ** state **   <a name="ivs-Type-Stream-state"></a>
The stream’s state. Do not rely on the `OFFLINE` state, as the API may not return it; instead, a "NotBroadcasting" error will indicate that the stream is not live.  
Type: String  
Valid Values: `LIVE | OFFLINE`   
Required: No

 ** streamId **   <a name="ivs-Type-Stream-streamId"></a>
Unique identifier for a live or previously live stream in the specified channel.  
Type: String  
Length Constraints: Fixed length of 26.  
Pattern: `st-[a-zA-Z0-9]+`   
Required: No

 ** viewerCount **   <a name="ivs-Type-Stream-viewerCount"></a>
A count of concurrent views of the stream. Typically, a new view appears in `viewerCount` within 15 seconds of when video playback starts and a view is removed from `viewerCount` within 1 minute of when video playback ends. A value of -1 indicates that the request timed out; in this case, retry.  
Type: Long  
Required: No

## See Also
<a name="API_Stream_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ivs-2020-07-14/Stream) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ivs-2020-07-14/Stream) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ivs-2020-07-14/Stream)