A responsive form widget with drag and drop video upload

A custom responsive form widget that allows users to learn about contest and to then submit a video via desktop or mobile device and fill out an accompanying form, all the data will then be placed into a google sheet. The form should be crafted as an embeddable widget that is generated with JS as described in this article [login to view URL] or similar. Not looking for an iframe solution. The video that is submitted should be sent into a google drive folder or an AWS S3 container (both must be available for me to configure) and then a link to that video should be written to the google sheet in the same row as the form entry. Developer must be willing and able to walk me through the code so I understand what is happening (I’m trying to learn a little :-)). The form/process will live on one of my servers and we’ll use github. Front End The front end will have 1 main breakpoint at 480px and will split from being 2 column to 1. For desktop users the interface needs to incorporate [login to view URL] or similar library that is small and shows upload progress as the video is being uploaded. The mobile experience will need to allow users to upload photos from their libraries ([login to view URL] has this) and easily navigate through the experience. If a user doesn’t not fill in a required field, it will clearly alert them that they have missed a step. After they have completed the form and the upload is complete, the form will tell them thank you and give them the option to share or go to a homepage. The form needs to inline ajax validate all fields to make sure they are proper entries and also to ensure that a file has been properly uploaded/saved. Please let me know if you have any questions.