att_abstract={{Cellular networks have witnessed tremendous traffic growth
recently, fueled by smartphones, tablets and new high speed
broadband cellular access technologies. A key application
driving that growth is video streaming. Yet very little is
known about the characteristics of this traffic class. In this
paper, we examine video traffic generated by three million
users across one of the world’s largest 3G cellular networks.
This first deep dive into cellular video streaming shows that
HLS, an adaptive bitrate streaming protocol, accounts for
one third of the streaming video traffic and that it is common
to see changes in encoding bitrates within a session. We also
observe that most of the content is streamed at less than 255
Kbps and that only 40% of the videos are fully downloaded.
Another key finding is that there exists significant potential
for caching to deliver this content.}},
	att_authors={je925g, ag1971, ss2864, os1872, kr2812},
	att_categories={C_CCF.10, C_NSS.18, C_NSS.10},
	att_copyright_notice={{(c) ACM, 20XX. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in Proc. of ACM Internet Measurement Conference (IMC). {{, 2011-11-01}}.
	att_tags={wireless ,  umts,  measurements,  video,  encoding,  caching},
	author={Jeffrey Erman and Alexandre Gerber and Subhabrata Sen and Oliver Spatscheck and Kadangode Ramakrishnan},
	institution={{in Proc. of ACM Internet Measurement Conference (IMC)}},
	title={{Over The Top Video: the Gorilla in Cellular Networks}},