AWS Customer Presenatation - SlingMedia uses AWS

Sling Media
Hurry up and Wait
Hurry up and Wait

Transcoding Challenges
Transcoding converts video from one encoded format to another format.
Effective real-world transcoding use requires significant CPU power
Rendering farms
Significant capex
Grid environment

In the early days
Before Amazon, transcoding large amounts content was limited to an exclusive audience
Large companies with budget to support significant capex (rendering farms, entertainment and production houses, SGI)
Parallel encoding processes across many machines
Machines largely go unused
Wasting electricity, IT operations costs, maintenance

Problems with a transcoding system
Batch encoding can either be a horizontal scaling effort or a vertical one
Faster computers don’t always result in significantly reduced encoding times
Some codecs unable to multithread
Generally more efficient to do one 1x transcode per CPU (core)
Amazon solves the "hurry up and wait" problem in encoding and transcoding

Sling.com At-A-Glance
ContentPartners
Cloud Ingestion
Sling.com
Grid
Message Queue
Encoder
Storage
Distribution

Encoding Architecture
Message Queue
SQS
EC2
Transcode
S3 or EBS
Storage
S3 or Cloudfront
Distribution

Encoding: How many servers?
Most cost-efficient to maximize 1 hour (~55 minutes) of usage
1,000 30 minute videos
~15 minutes encoding time per video (2x linear rate)
(Total number of videos * average encode time in minutes) / (55 (minutes) * number of cores) = number of servers

Encoding: Non-scientific cost comparison
Traditional datacenter
$3,000 / server * $1,200/yr electricity (8-core)
(1,000 (videos) x 15 (minutes per video)) / ( 55 (minutes) x 8 (cores))= 34 (servers)
34 * $3,000 * $1,200 = $142,800 first year capex and run costs
EC2
(1,000 (videos) x 15 (minutes per video)) / ( 55 (minutes) x 20 (cores))= 14 (servers)
14 * $0.68 = $9.52 in costs

Conclusion
Elastic grid
Ideal for scalable projects, rapid prototyping
Collect metrics on CPU, network, disk IO
Launch/terminate instances from metrics
Encoding/transcoding/map-reduce
Cost-savings
Terminate instances after certain time period
Most cost-efficient to maximize 1 hour of usage
Use infrastructure-as-a-service where savings make sense (either cost or operational)

AWS Customer Presenatation - SlingMedia uses AWS

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AWS Customer Presenatation - SlingMedia uses AWS Presentation Transcript