IEEE 802.15.4 is a wireless technology aimed at the transmission of information at low rates and short distances. Therefore, the expected traffic carried by these networks is one whose transmission rates are low, i.e. information captured by sensors. The extension of this technology to higher data rates is a challenge that gives us the opportunity to support additional services. This paper deals with this issue and evaluates the feasibility of transmitting MPEG-4 video information by computer simulation. Another subject to take into consideration is the computation of the human quality perception when the video streaming is received. To achieve these objectives, the GTS slots of the IEEE 802.15.4 MAC are implemented in the currently available simulation tools. The results obtained are also presented and discussed.