Translation of "Smooth Streaming presentation content" into Italian

Video files (with .ismv file name extensions) and audio files (with .isma file name extensions). Each file is output from an encoder (Expression Encoder 2 SP1 in this case) at different bit rates and synchronized such that clients can seamlessly request contiguous fragments from different files as network and CPU conditions change. The content files are a media container that stores the contiguous MP4 fragments.