Question about deploy web application on AWS IoT Greengrass

My web application is an application that required users to upload a video and classify objects. And now I'm thinking to deploy this application on AWS IoT Greengrass and double check the result.

When I try to create a component, I haven't found the right component. **Can anyone suggest some components to me? **

Besides, I am considering the video uploading problem. I have put my application into the s3 bucket. After I get the video from the user, how can I run the application on AWS Cloud with that video?

Finally, my application has a user interface, how can I show my application stored in s3 to the Greengrass port (e.g. www.greengrass.com:3000)?