Interface for transcoding system

The invention relates to a transcoding system comprising an application platform and a transcoding platform for executing transcoding transactions that comprise the transmission of a request from the application platform to the transcoding platform, the execution of said request by said transcoding platform, and the transmission of a response to said application platform, said request and response having specific formats given in detailed tables. Moreover, the request has a transcoding parameter element comprising a transformation element that defines a transformation through which a content must go, amongst a plurality of supported transformations also defined in a detailed table.