Hello Sir,
I understand your requirment.
We run a digital marketing company and we have expert graphic designers who are dedicated to providing you the requirements for videos around 10-20 sec for promotion and also provide you the process of introduction, Illustrations, Voice over, music and sound effects, Animation, Delivery of video in your desired format with HD quality and rest brochure, poster image, banner image etc.
For portfolio. Please come on chatbox and we will share our previous work with you.
Thank You!