A Method for Functional Testing of Media Synchronization Protocols

Abstract

Abstract. In this paper, we propose a functional testing method of media synchronization protocols, which control the synchronization between audio and movie, described in concurrent synchronous timed I/O automata. In order to trace all test sequences (I/O event sequences) with synchronization on the model, we need to execute each I/O event at an adequate timing which satisfies the whole timing constraint for all the given test sequences. However, the outputs are given from the IUT and uncontrollable. Also each output/synchronization timing may affect executable timing for its succeeding I/O events in the test sequences. In this paper, we propose a technique to derive a set of time intervals which make all the given test sequences executable, and propose a method for functional testing using the technique.

QoS Functional Testing for Multi-media Systems

“…However they do not deal with the quality during playback of an object. Moreover, [16] proposes a method for functional testing of media synchronization protocols using a concurrent timed I/O automata model, where a given IUT is tested by executing each input action within an appropriate time interval calculated in advance, and by observing whether execution timings of output actions are within the appropriate time interval. However, this approach does not consider statistical aspects of multi-media systems.…”