Motion JPEG2000 to MPEG 4 File Conversion Utility

We require a simple utility to convert a **Motion JPEG2000 file (.mj2) to MPEG 4 (.mp4) Video conversion process should be to the highest possible quality. **It should be noted that some of the files for converstion may be very large (> 20Gb) The utility should be command line based and be as compact and simple as possible. A percentage completion and time remining indication should be provided. The application should support Windows XP and Windows 7. Command line paramters shall be provided for MPEG 4 compression and quality settings. The development environment should ideally be .NET Should the utility consist of more than one exacutable, an installer shall also be provided. Sample video files will be provided for testing.