This API belong to OPTION2 api group. It is designed to upload AWS or Azure. If you just want transcode and get download URL, please check our OPTION1 api group
please check this *.js file for example use case with rapid api keys
please check introduction in our Postman collection. All APIs has unique code like A1, B5, etc… This endpoint is B1
it provides detailed info for the object structures as well as tips for database management.