MUX is a any-to-any video conversion service that allows you to convert video files to different formats. The service allows you to convert to and from Quicktime (mov), MPEG-4 (mp4), Flash Video (flv), Windows Media (wmv), MPEG-1/2 (mpg), Windows AVI (avi), and Mobile 3gp (3gp).
In order to MUX a video, you provide a link to the video file and select the format you would like the video converted to. MUX will then give you a converted video in the size, bitrate, and frames per second that you specified. The conversion takes a couple minutes and the service will notify you when it is finished at the email address you entered. The email you receive contains a URL to your converted video.
I was able to convert a video on YouTube to a Quicktime file pretty easily. I selected the Rolling Rock Thong Ad from the Super Bowl (very funny) and was able to convert it to Quicktime.
MUX is powered by Amazon’s EC2 and S3 web services. Amazon EC2 (Amazon Elastic Compute Cloud) is a web service that provides resizable compute capacity and is designed to make web-scale computing easier for developers. Amazon S3 (Amazon Simple Storage Service) is a simple storage service that offers software developers a highly-scalable, reliable, and low-latency data storage infrastructure at very low costs.