The growth of video chat becomes a source
of extra revenue for mobile operators. But as the
trend will not stop after two or three years, with
approximately 140 million video chat consumers
(Fig. 1), the future growth of video chat traffic is
a concern for network service providers. The
operators are concerned about how video chat
traffic may affect their networks. In addition,
facilitating such growth requires advancement in
application-level coding techniques, networklayer
video delivery, quality assessment strategies,
security, and so on, and the interplay of
these issues.