Codem is described as 'is designed to be flexible, scalable and robust. Flexible, since it's easy to extend, scalable, since it's easy to add more Transcoders, and robust because each part of the system acts independently of the others'. There are seven alternatives to Codem for a variety of platforms, including Online / Web-based, Linux, Self-Hosted solutions, Windows and Mac. The best alternative is CloudConvert, which is free. Other great apps like Codem are YouPHPTube (Free, Open Source), Zamzar (Free), Wowza Media Server (Paid) and Adobe Media Server (Paid).
Encoding.com is a reliable and scalable video encoding web service. Encoding.com allows pay as you go access to massive encoding resources in a cloud computing architecture. It is available to developers via a XML API and a web based interface.