Parameter pass-through for HLS encryption

Overview

Parameter pass-through for HLS encryption allows you to enable HLS encryption and rewrite M3U8 files. After you enable HLS encryption, you can add a custom parameter name to the M3U8 file. The custom parameter name must be the same as that in client requests. If you do not customize a parameter name, the parameter name MtsHlsUriToken is used by default.

To rewrite the M3U8 file for HLS encryption, Alibaba Cloud CDN rewrites the #EXT-X-KEY tag in the M3U8 file. After the #EXT-X-KEY tag is rewritten, the specified parameter name and value are added to the end of the URI attribute in the tag. Client requests contain the parameter name and value.

Procedure

1. Log on to the ApsaraVideo VOD console.

2. In the left-side navigation pane of the ApsaraVideo VOD console, find Configuration Management.

3. Choose CDN Configuration > Domain Names to go to the Domain Names page.

4. Find the required domain and click Configure.

   

5. Click Video Related and turn on Parameter Pass-through for HLS Encryption.

   
   Note

   After you enable parameter pass-through for HLS encryption, the MtsHlsUriToken parameter will be overwritten in decryption requests when users attempt to play HLS-encrypted videos.

Example

A client request contains the MtsHlsUriToken parameter. The value of this parameter is test. To decrypt the M3U8 file, Alibaba Cloud CDN adds MtsHlsUriToken=test to the end of the URI attribute in the #EXT-X-KEY tag.