cloud computing online video
TRANSCRIPT
Cloud Computing and Online Video
Rex ChungFounder of Ankoder
(Rorcraft Limited)
Some History
• Studied High School & Computer Engineering Degree in Sydney.
• Started developing HTML in 96.
• My first job in the web industry in 2001.
• Started Rorcraft in Oct 06.
• Started Ankoder in Dec 07.
What is Cloud Computing?
What is Cloud Computing?
It can mean many things.
• Originate from network diagrams
• Marks a new era of computing
• Marketing Jargon (similar to web2.0)
Computing Eras
• Mainframe (centralised) - 60s-70s
• PC (decentralised) - 80s-90s
• Internet Cloud Computing (centralised) - today.
• No local software
• No local hardware, only access devices
• Everything through the internet cloud
Is it SaaS?
• SaaS - Software as a Service (Gmail, Google Docs)
• PaaS - Platform as a Service (APIs)
• HaaS - Hardware as a Service (Amazon)
Difference is vague
Is it Scale on Demand?
• Yes, but Amazon’s EC2 is not automatic.
• Google Apps Engine is automatic.
• Trade off between automation and flexibility
Traditional way of scaling
• Buy Hardware
• Buy routers, load balancers, firewall
• NAS Network Attached Storage
• Database Cluster or Master/Slave
• High Availability (IP redirect)
Virtualisation
• Xen - http://www.xen.org/
• open source industry standard for virtualization
• Dedicated Servers =>Virtual Private Server
• Enterprise implement their own virtualised infrastructure
Amazon’s Web Services
• S3 = Simple Storage System
• EC2 = Elastic Cloud Computing (Elastic = Scale up and down)
• SQS = Simple Queue System
• SimpleDB = Key-Value Database
Google Apps Engine
• Run time environment - currently Python only.
• Auto scaling (no preset load)
• BigTable - distributed database system.
BigTable
• Based on Google’s own distributed file system
• Data Redundancy (Fault tolerant)
• Served from memory.
• Open source implementation:Hadoop - distributed file systemHBase - database on top of Hadoop
Videos...
• Problem 1: Too many formats
• Containers:avi, asf, mp4, ogg, flv, mov, 3gp
• Codecs:mpeg-2, wmv, divx, h.264, theora, quicktime, sorenson
Videos...
• Problem 2: Too many sizes and devices
• Full HD, HD, HD Ready, Apple TV, web, laptop, netbook, ipod/iphone, portable media devices, mobiles
• Different bitrate, frame rate.
Most popular
• Flash: Flv (sorenson), MP4 (h.264)
• Mobile: 3GP ( MP2 or MP4)
• Firefox 3.1: Theora (open source)
Video Conversion...
• Problem 3: Transcoding is CPU intensive and takes alot of time
• What if you need to transcode 100 videos at the same time?
• If each video takes 5mins, that’s 500mins! (8hrs+)
Ankoder: Solving the problem
• Leverage computing power from Amazon on demand.
• Platform as a Service
• Reliability
• Scalability
• At no upfront cost.
Our target clients
• Videos are not part of their core business.
• Large user base, high volume video upload.
• Some examples:- online auctions- educational, tutorials- online dating- yellow pages (alibaba, openrice etc)
How we do it?
AnkoderAPI
SQS
S3
Transcodeworker
Transcodeworker...
e.g.Yellow Pages
How we do it?
AnkoderAPI
SQS
S3
Transcodeworker
Transcodeworker...
e.g.Yellow Pages
How we do it?
AnkoderAPI
SQS
S3
Transcodeworker
Transcodeworker...
e.g.Yellow Pages
How we do it?
AnkoderAPI
SQS
S3
Transcodeworker
Transcodeworker...
e.g.Yellow Pages
How we do it?
AnkoderAPI
SQS
S3
Transcodeworker
Transcodeworker...
e.g.Yellow Pages
How we do it?
AnkoderAPI
SQS
S3
Transcodeworker
Transcodeworker...
e.g.Yellow Pages
How we do it?
AnkoderAPI
SQS
S3
Transcodeworker
Transcodeworker...
e.g.Yellow Pages
How we do it?
AnkoderAPI
SQS
S3
Transcodeworker
Transcodeworker...
e.g.Yellow Pages
How we transcode.
• FFmpeg - open source tool
• Flvtool2, MP4Box, ffmpeg2theora
• Quality = bitrate : resolution : frame rate
Next steps
• Real time video transcode
• Analytics - tracking video usage
• Ad network - serving relevant ads to video
• Video Streaming - seek to begin
