MpegALot has one purpose - to facilitate the encoding of large amounts of videos to the MPEG4+AAC format (for ipod, PSP, etc). It has several useful features that greatly simplify this task. Here are some of the most important:

• Clean, unified, streamlined GUI that handles all the various "behind-the-scenes" open-source command-line encoding apps
• Encoding frontend is completely multithreaded to take advantage of multicore/multiprocessor/hyperthreaded systems to greatly speed up batch encodes
• Accepts both files and folders as sources, and can apply custom filtering rules to specify only certain files/folders to encode
• Can recurse through source folders to encode all files in all subdirectories
• Output all encoded files to a single folder or to a directory relative to each source's path
• Can preserve metadata from source to output files
• Multi-user aware, so multiple users can run different encoding jobs without interfering with each other
• AV presets and encoding jobs can be imported/exported as simple XML files for easy transfer between machines
• "Autorun" mode suitable for launching from the command-line or task scheduler
• Extensive logging mechanism and GUI for debugging errors and monitoring progress
• Able to encode almost any file that is playable in Windows Media Player