TRANSCODING

VIDEO

BY Neil

with AWS

Cloud

A Complete

Guide to

OOPS !!

Were you Expecting

an overview

or an agenda slide ?

A want to listen to a Story.

A Sense of humour.

Well, to Enjoy this Presentation all you need is

Meet the Stars -

Video Transcoding ?

What is it

Exactly?

Say you have a Website

Hosting lots of videos

You want everyone to See World Wide

On Mobiles, PCs, Tablets & more

Ideally you would want

your audience

using different Platforms

and Devices to

have a seamless

User Experience

Now, every Video File is first created in a particular High Resolution format,

But, How would devices on various platforms Render it ?

What if ...

You could convert your videos into all these rendering formats

Well that’s Transcoding!

Transcoding means

conversion of your video files into different

formats so that they can be viewed on

different devices and platforms

seamlessly

So How does Transcoding Work ?

We need to know what a video file contains...

Meta Data

Audio Track

Video Track

Subtitle Track + + + =

[ Encoded using Codecs ]

Raw File

Different Tracks are Extracted (Decoded)

First

AUDIO VIDEO SUBTITLE

1

From this Raw File

Initially your files

are extracted to

all constituent

tracks

Different Tracks are Extracted (Decoded)

Next

Transcoding & Filtering

2

1

Tracks are Filtered (for noise, scale, dimensions & sharpening)

&

Transcoded (one audio chunk, then video chuck,

then next audio & so on)

to new formats

1

1

AUDIO VIDEO SUBTITLE

Different Tracks are Extracted (Decoded)

Finally

Video in New Formats

1

3

After Transcoding & Filtering, your Tracks

are multiplexed

or interleaved back to one File Format,

ready for Distribution

1

1

Transcoding & Filtering

AUDIO VIDEO SUBTITLE

2

Tracks Encoded back & multiplexed

Now that you

know how video transcoding works...

Lets see how Amazon Web Services (AWS) does Video Transcoding

Amazon Elastic Transcoder

But First,

lets get to know the basic AWS Elements involved in Transcoding

IAM

EC2

SNS

S3

Helps you Assign Computing Instances on the Amazon Cloud for your various operations.

EC2

Elastic Compute Capacity

1

S3 Helps you

Store & Retrieve Content from The Amazon Cloud Simple Storage

Service

2

Notifies you of the progress of your on going

job queues

SNS

3

Simple Notification Service

IAM Allows you

to set access rights for your data

Identity & Access Management

4

You need to have your files first on S3 buckets.

So How does Elastic Transcoder

operate ?

Now, define your input & output S3 buckets that will contain the transcoded content.

You can upload data

onto your S3 buckets from AWS console.

S3

S3

Now, Select a Transcoding Pipeline, and

Define

Transcoding Jobs, i.e. the files you want to transcode.

Input Bucket

Transcoding Pipeline

Output Bucket

Job 1

Job 3

Job 2 Jobs in queue

Voila ! Your videos are transcoded & ready for

Distribution !

Wait Up !

With AWS you get added

Benefits

Set Multiple

Transcoding pipelines based on priority of Jobs, simultaneously.

With AWS you get added

Benefits

Get Variety of transcoding pre sets available on AWS.

With AWS you get added

Benefits

Use IAM to control access of data

With AWS you get added

Benefits

Transcode videos

either from AWS console or

configured APIs.

With AWS you get added

Benefits

Get 20MBs of transcoding

FREE every month.

Now Experiment with all the new formats !

With AWS you get added

Benefits

Pay as you go pricing with elastic, scalable & on demand benefits of the Cloud.

But there’s

MORE !!!

With AWS &

BlazeClan you can...

Distribute your content World Wide using Amazon

CloudFront

But there’s

MORE !!!

With AWS &

BlazeClan you can...

Analyse when, what, where & how your content was viewed worldwide using Our

Cloudlytics

While your Videos are

Transcoded...

What happens in

the background

on

Amazon Cloud

Initially a certain number of transcoding jobs

are processed on priority basis by EC2

instances

Jobs

EC2

Jobs require more compute capacity ??

What If ...

Or more number of jobs are queued because of on demand requirements ??

Cloud

brings along with it

Scalability & Elasticity

Not to Worry!

Alarms Trigger an Auto Scaling policy indicating that more number of EC2 instances need to be deployed, and instantly the required Compute Capacity is made ready.

Alarms Triggered

EC2 Auto Scaling

We are Officially done with the basics of Transcoding !

How did NETFLIX Transform Business using Amazon Cloud?

So,

You all must have

watched movies online on NETFLIX right ?

This video Streaming company, initially rented

content on DVD’s till 2006/07,

When .....

They realized,

there was Too Much Content !

So they used GPU Based encoding Hardware to handle the load.

But in 2008, with

increasing number of

video formats...

Barriers to launch new

video players for MAC & PCs

And, Finally the launch of a video player for XBOX, failing to launch

full content catalogues

Their in house Infrastructure

could not handle the Load !

Amazon Web Services Came with the Solution

Using

Multiple EC2

instances

In 2009, NETFLIX was able to launch a new video player for Sony Play Station 3

Successfully !

In 2010, the successful

Apple Ipad’s video player launch also marked the success on

Cloud!!

For more on NETFLIX’s Journey to Cloud & Video Transcoding

Visit Our Blogs

In A Nut Shell we Learnt

What is Transcoding ?

How It works ?

How Videos are Transcoded on

AWS

How NETFLIX benefited

Thanks for Watching

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Our Blog : http://blog.blazeclan.com/