Hi Sham,
Welcome to Adobe Community !!
You can create a Batch Set Preset on your AEM Author Instance (with configured Dynamic Media Scene 7 configuration), by adding a "Raw Code" (regular expression), according to your image's Naming Convention.
Detailed information available here : https://experienceleague.adobe.com/docs/experience-manager-cloud-service/content/assets/dynamicmedia...
Note : After creating the Batch Set Preset, please apply it on the folder (using "Folder Properties -> Dynamic Media Processing" tab), where you are going to upload your images.
Thanks,
Vikram Gaur