Problem description
The signature in the LiveChannel request expires.
Causes
You initiated a LiveChannel request that includes a signature, but the signature in the LiveChannel request expires when Object Storage Service (OSS) receives the signed request.
Examples
You initiated a LiveChannel request that includes a signature, and specified the validity period of the signature by using the Expires parameter. However, the signature in the LiveChannel request expires when OSS receives the signed request.
Solutions
Regenerate a signed URL. We recommend that you increase the value of the Expires parameter to extend the validity period of the signed URL. The Expires request parameter must be a timestamp that follows the UNIX time format. It is the number of seconds that have elapsed since 00:00:00 Thursday, January 1, 1970.
For more information, see RTMP ingest URLs and signatures and Add signatures to URLs.