Max Upload Limit?

Our server supports uploads up to 100MB, but would like to accept video uploads for a contest that will be a minute max. An iPhone 1 minute video is about 110MB and on phones with less compression could be significantly higher.

The form will have to options, 1) direct upload and 2) pasting in a url to an existing YouTube Link since Youtube supports 128GB. But for people who upload direct, want to increase the limit.

With this plugin, if people upload videos on the front end using say Gravity Forms, upload field which normally would save the site/server, will this instead go straight to Amazon S3 and most importantly will it bypass the servers 100MB upload limit? Or would uploads still be limited by the server upload limit?

Trying to find a plugin that will go straight to S3 before installing and testing one out. Any help would be much appreciated!