:How do I obtain the streaming URL of a live stream?

Overview

This topic describes how to obtain the streaming URL of a live stream and generate a signed streaming URL.

Obtain a streaming URL

• From the console:
  • URL generator page

    In the ApsaraVideo Live console, go to Streaming Management > URL Generators to generate a streaming URL. For detailed steps, see Use the URL generator.

  • Stream management page

    In the ApsaraVideo Live console, go to Streaming Management > Streams. Find the ingest URL that you want and click View URLs to view its streaming URLs for different transcoded formats and protocols.

• Use the concatenating rules

  You can manually construct a streaming URL by using the concatenating rules. For more information, see Generate ingest and streaming URLs.

Obtain a signed streaming URL

The validity period of signed URLs from ApsaraVideo Live is short. To obtain a signed URL with a longer validity period, you can use a tool or an algorithm.

• Use a tool in the console

  You can use a tool in the ApsaraVideo Live console to generate a signed streaming URL. For more information, see Configure URL signing.

• Use an algorithm
  You can construct an unsigned streaming URL based on the AppName and StreamName parameters in an ingest URL. Example: rtmp://videolive.aliyuntest.club/AppName1/StreamName1. Then, you can calculate a signed streaming URL by using the authentication algorithm. For more information, see Signed URL Components. The following sample PHP code provides an example:

  //http://DomainName/Filename?auth_key=timestamp-rand-uid-md5hash
  //sstring = "URI-Timestamp-rand-uid-PrivateKey" (The URI specifies the relative address that points to the requested resource, such as /Filename.)
  //HashValue = md5sum(sstring)
  function PrivateKeyA(){
  $time=strtotime("-800 seconds");//("+1 hours");
  $key="aliyun2013";
  $domain="rtmp://videolive.aliyuntest.club";
  $filename="/AppName1/StreamName1";
  //$sstring = "URI-Timestamp-rand-uid-PrivateKey" 
  $sstring = $filename."-".$time."-0-0-".$key;
  $md5=md5($sstring);
  $auth_key="auth_key=".$time."-0-0-".$md5;
  $url=$domain.$filename."?".$auth_key;
  echo $url."\n";
  }
                      

Use code to obtain a streaming URL

You can construct an unsigned streaming URL based on the AppName and StreamName parameters in an ingest URL. For example, if the ingest URL is rtmp://video-center.alivecdn.com/APPName1/StreamName1?vhost=videolive.aliyuntest.club, the streaming URL is rtmp://videolive.aliyuntest.club/AppName1/StreamName1.

You can construct a signed URL by using the concatenating rules. For more information, see Signed URL Components. You can also use an algorithm to obtain a signed URL. The following sample code provides an example on how to calculate the signed URL for a streaming URL, such as rtmp://live8.aliyuntest.club/AppName1/StreamName1, based on the authentication algorithm.

//http://DomainName/Filename?auth_key=timestamp-rand-uid-md5hash
//sstring = "URI-Timestamp-rand-uid-PrivateKey" (The URI specifies the relative address that points to the requested resource, such as /Filename.)
//HashValue = md5sum(sstring)
function PrivateKeyA(){
    $time=strtotime("-800 seconds");//("+1 hours");
    $key="aliyun2013";
    $domain="rtmp://videolive.aliyuntest.club";
    $filename="/AppName1/StreamName1";
    //$sstring = "URI-Timestamp-rand-uid-PrivateKey" 
    $sstring = $filename."-".$time."-0-0-".$key;
    $md5=md5($sstring);
    $auth_key="auth_key=".$time."-0-0-".$md5;
    $url=$domain.$filename."?".$auth_key;
    echo $url."\n";
}
            

What to do if a streaming URL cannot be used for normal playback

Scenario

After a stream is ingested, the streaming URL cannot be used to play the stream.

Troubleshooting

• Check whether the domain name is configured for live streaming.

  Log on to the ApsaraVideo Live console, and check whether you can find the domain name on the Domains page.

• Check whether the stream ingest is successful. For more information, see Troubleshoot abnormal stream ingest.
• Confirm that live stream acceleration is working correctly.

  Verify that you have added a CNAME record with your DNS provider. This record must point your streaming domain to the CNAME address that ApsaraVideo Live provides. For instructions, see Configure a CNAME record for a domain name. You can find the CNAME address in the CNAME column for your domain on the Domains page.

• Check whether the streaming URL is valid. For more information, see Obtain a streaming URL.
• Check whether URL signing is enabled for the domain name.

  For information about how to determine whether the streaming URL is signed, see Generate ingest and streaming URLs.

• Check whether URL signing is enabled for the domain name and whether the streaming URL is expired. You can generate a new signed URL and check whether it can be used for playback.
• Check whether the player supports the video format. You can use VLC media player to check whether the video can be played.