上传到服务器之前基于浏览器的视频转换

I want something either flash or java based (in otherwords anything that will run from the browser without having to the user download some other program, and doesn't have to have winblows) that can compress a video before it gets uploaded to the server. I plan on doing the heavy lifting server-side via ffmpeg, but the client should at least be able to compress down to a reasonable size, before it even goes to the server, otherwise it would take forever to upload it.I want something either flash or java based (in