Hi Sandeep,
Thank you for contacting AEM League Community.
Please share more information about your GIF Image renditions.
What is the exact version of AEM Author instance?
Do you have Dynamic Media enabled of your AEM instance?
Do you see Animation effect on the "Original rendition"?
You might need ImageMagick to achieve that kind of functionality, you are looking for (animation effect)
https://docs.adobe.com/content/help/en/experience-manager-65/assets/extending/best-practices-for-ima...
Regards,
Vikram Gaur
Regards,
Vikram Gaur