Hi @Vishal_Jain03 ,
On your Adobe Experience Manager (AEM) Author Instance (version 6.5.11 and above), you can use the General Settings section to configure DM Server settings and change Publish Server URL or Dynamic Media URL for your DM assets.
To open Dynamic Media General Settings page, on your AEM Author Instance, click on Tools, then go to Assets, then go to Dynamic Media General Setting.
For more details on this please follow below link:
https://experienceleague.adobe.com/en/docs/experience-cloud-kcs/kbarticles/ka-17628
-Tarun