MediaCoder is a front-end/GUI for a collection of audio/video command line utilities and dynamic libraries (including audio/video codecs and multiplexers). MediaCoder maintains a unified parameter tree whose leaves (parameter values) can be altered through the application GUI, a web-based tree view, user interfaces for specific devices (e.g. PSP, iPhone) and conforming HTTP requests. It maps the parameter tree into command line options or calling parameters for various codecs and tools. MediaCoder pipes the decoder’s output into the encoder’s input, rather than using temporary files. This allows it to convert large amounts of data without using excessive disk space. Some of the included utilities are also patched to add extra interfaces.
MediaCoder has a built-in media streaming server which can be used to stream out audio and video files through HTTP protocol. It is able to apply on-the-fly transcoding for both audio and video streaming with some of its supported audio and video codecs.
MediaCoder has started to add experimental GPU-based video processing and encoding features since 0.7.1. The initial approach is done by using nVidia CUDA technology.