1. A method in a streaming and archiving system for post-processing a multimedia stream converted from a conventional conference format coded data stream for the purpose of making the multimedia stream searchable, comprising: monitoring in a H.323/SIP compatible conversion engine whether a H.323 or SIP coded data stream is received; and when the H.323 or SIP coded data stream is received, converting the conventional conference format coded data stream to a multimedia stream in a defined multimedia streaming format including timing information related to respective fragments of the multimedia stream, analyzing fragments of sound from an audio part of said multimedia stream in a speech recognition engine by generating a model of each respective fragment of sound or sequences of fragments of sound, and comparing the respective model of each respective fragment of sound or sequences of fragments of sound with reference models of pronunciations of known words or phonemes stored in a database, and assigning a timing information referring to a fragment or a sequence of fragments whose model said speech recognition engine has found to match a reference model of a pronunciation of a known word in said database, and associatively storing said timing information and said word in a text file.