Introduction
The following applies to CDN HTTP Live services with RTMP Push publishing. You can customize your publishing URL (also referred as Server URL) with a CNAME record. Please note that publishing URL is used in your live encoder such as OBS to publish/push its output to the CDN.
How to customize a publishing URL
Let's assume that you have created a CDN HTTP Live service with RTMP Push publishing and that your publishing URL is:
rtmp://push-xy.cdnsun.com/p123
Please note that you can find your publishing URL on the Services/How-To page.
Let's assume that you would like to customize the publishing URL to look similar to publish.mycompany.com.
Add the following DNS record for publish.mycompany.com under your domain name registration.
publish.mycompany.com 3600 IN CNAME push-xy.cdnsun.com
That's all. Now you can start using rtmp://publish.mycompany.com/p123 in your live encoder as a publishing (Server) URL.
Notes
Please note that chnages in your DNS configuration may require up to 48 hours for propagation.