Uploading file of 1 gb using jquery or javascript

In my application developed in asp.net, client wants to upload files of 1 GB. please tell me some trick how i can achieve it through it.

this application is about to watching video online so the administrator will upload the movies videos开发者_JAVA技巧 file. so now how i can upload files which are large than 1 Gb

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www.uploadify.com

Uploadify is a jQuery plugin that integrates a fully-customizable multiple file upload utility on your website. It uses a mixture of Javascript, ActionScript, and any server-side language to dynamically create an instance over any DOM element on a page.