youtube
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LUQMAN BIN TALIB
Mohd azri bin mat raffei
Ahmad syafiq bin ahmad dzaki
INTRODUCTION
Internet traffic from social network media are sharply increase, this included video streaming.
Video streaming such as YouTube and Netflix has consume 40 % of internet traffic at 2010.
More than 13 MILLION HOURS, 2010
More than 35 HOURS, every minute.
More video is uploaded to YouTube in 60 days than the 3 major US networks created in 60 years.
YouTube reached over 700 billion playbacks in 2010.
YouTube mobile gets over 100 million views a day.
INTRODUCTION
Internet Traffic
60%
40%
INTERNET
Video Streaming Others
70%
30%
YOUTUBE
In US Out US
LITERATURE REVIEW
Research Question: What are the improvement done by Google on YouTube delivery basis after the take over?
Purpose: To compare and contrast the efficiency of video delivery basis and network infrastructure of YouTube before and after Google take over.
Review on literature will show the rough idea how was YouTube before and after google take over.
YouTube before google
3 logical web servers 7 video server Use LimeLight CDN to support the
distribution of video
YouTube after Google.
How Google engineers re-design YouTube? Google’s huge infrastructure including globally distributed “edge servers
& caches” and Google’s engineering talents Enormous scale -- both in terms of videos
and usersGoogle redesign in video delivery dynamics hot and cold videos, cache misses, etc. load-balancing among cache locations,
servers, etc. relations with ISPs
CURRENT ISSUES ON YOUTUBE
Video are shortened.
Videos don’t play on Internet Explorer
Subscription not updating
Unable to view age restricted videos despite being over 18.
Subscription limit Can’t reply or like/dislike some
comments
UPLOAD
PLAY
LOG IN
SHARING
EXISTING COMMERCIAL APPLICATIONS
1. www.metacafe.com
2. www.dailymotion.com
3. www.liveleak.com
4. www.vimeo.com
NETWORK INFRASTRUCTURE (BEFORE GOOGLE TAKEOVER)
Before google take over YouTube only has• 7 Video Servers• 3 Logical Web server• Use limelight CDN to help the distribution of video
YouTube was paying $1 million/month or more to ISPs to carry its video traffic to users!
Front-end Server
Internet Video Servers
Users
1
2
3
4
1. HTTP GET request for video URL
2. HTTP reply containing html to construct the web page and a link to stream the FLV file
3. HTTP GET requestfor FLV stream
4. HTTP replyFLV stream
NETWORK INFRASTRUCTURE (AFTER GOOGLE TAKEOVER)
NETWORK INFRASTRUCTURE (AFTER GOOGLE TAKEOVER)
Schema of YouTube new page download
QUALITY OF SERVICE ISSUES
Content Level• Addresses the video codec, format,
resolution, and also duration, contents of the video, type of video and its motion patterns.
System Level• Cover influences of the transmission
network, the devices and screens, but also of the implementation of the application itself like video buffering strategies.
QUALITY OF SERVICE ISSUES
System Level• Cover influences of the transmission
network, the devices and screens, but also of the implementation of the application itself like video buffering strategies.
Context Level• Considers aspects like the environment
where the user is consuming the service, the social and cultural background, or the purpose of using the service.
COMPARITIVE ANALYSIS ON COMMERCIAL APPLICATIONS
62%20%
18%
Internet Traffic
YouTube DailyMotion Vimeo
SUMMARY
There’s a lot of client server video streaming application on the internet, but YouTube still emerge on the top, this is because YouTube provide ability to customize, unlimited channel subscription and various video quality.
YouTube has gone a lot of improvement after google took over whether in network infrastructure, traffic rate, content management and usability.
Quality of services (QoS) issue are emphasized issue in YouTube. It can be proven by the way YouTube divided the QoS issue into four level that is, context level, user level, system level and content level. This is to ensure the user satisfied with the services provided and having a great experiences while browsing or streaming video on YouTube.
