Streaming Experienceby KKStream & KKTV

官順暉 (Drake Guan), KKStreamwith 巫紘碩 (GDX Wu), KKTV

2016/12/06

Who am I?

• Technical Director, KKStream / KKBOX Group• R&D Manager, Digimax Inc• Ph.D., EECS, National Taiwan University

Agenda

• KKStream: building and migrating Videopass from on-premises to cloud.

• KKTV: streaming service in Taiwan. • Both focus on streaming experience,

especially CDN part.

http://videopass.jp/

Development strategy

• Built on cloud, AWS, from the 1st day.• Just one AWS DevOps Engineer.• Dynamic environments: dev, testing, staging,

and prod.• Scalable infrastructure, storage and bandwidth.• Powerful content encoding capability.• Standards: MPEG-DASH, HLS, CENC, …

Videopass

• More than 1M paid subscriptions. (Japan only)• More than 60,000 videos encoded.• 3,000 films encoded in just one day. (peak)• 3 (adaptive formats) * 1x (A/V profiles).• Couple of million video-hours watched.• EC2 instances: 4,000 cores. (peak)• Request per month: 3 billions. (peak)

https://kktv.me/

KKTV

● Launched officially in Taiwan in Aug 2016.● Cloud-based SVOD service.● Offers contents in up to 1080p quality with

offline playback secured by DRM.● Largest TV Series Library in Taiwan, with

40% Korean titles, 30% Japanese titles and 30% Chinese/Taiwanese titles.

Let’s talk about streaming!

src: http://bit.ly/2gX02VG

#0 Livestreaming in Videopass

#0 Livestreaming in Videopass

CDN edge location distribution by time on 8/27

• Not expecting so much traffic are directed to CDN edge locations outside of Japan!

Viewing profile distribution by time on 8/27

• 74.84% avg. viewing time in 720p@2.6M• 9.54% avg. viewing time in 480p@1.3M• 5.52% avg. viewing time in 480p@796K• 10.10% avg. viewing time in 360p@414K

#1 KKTV Soft Launch

● KKTV soft launched on the 6th July.● Only one CDN, CloudFront, is used.● Fortunately (or unfortunately), one CDN

works just well.● There are some TFN and Taiwan mobile

users complaining about low resolution but no big issue happened.

TFN and Taiwan mobile users complained that they cannot play any videos from the end of Aug.

#2 TFN & Taiwan mobile

Most of the traffic is directed outside of Taiwan.

#2 TFN & Taiwan mobile

Multi-CDN solution

● One more CDN provider, EdgeCast.● Leverage KKBOX mpdnsd to do

multi-CDN solution by ourselves.● TFN and Taiwan mobile users will use

CloudFront directly since they works quite bad with EdgeCast.

● Other users are all routed to EdgeCast.

● Taiwan mobile user cannot use KKTV.● Latency looks okay but download speed is very slow.● We decided to add Hinet CDN right away.

#3 Two CDNs can fail you, too

More CDNs

● CloudFront and EdgeCast can fail you, too. Therefore, we invite Hinet CDN in.

● Now, the routing policies get more complicated.

Metrics for Multi-CDN Strategy

● Streaming performance○ ISP-CDN○ Location○ End-user networking environment

● Pricing○ Membership○ Marketing promotion○ Content profile○ Content popularity

Takeaways & Lessons

● Everything fails all the time, so does CDN.● Put Multi-CDN into your core while

running streaming services from day one.● Don’t try to understand CDNs but treat

them like a black box, and then plan to build the fault-tolerant service.

Let’s talk a little bit about us.

KKStream

● Customer oriented cloud-centric streaming solution.● Helps KDDI to migrate 2 video services from on-premises

to cloud in 2015.● Supports multiple business models: SVOD, AVOD, TVOD

and even virtual currency.● Applies highest security level, which is authorized by

Hollywood studios. We are the DRM implementation partners with Microsoft, Google and Apple.

● Adopts cutting-edge technologies, such as dynamic content encoding, 4K HEVC playback, HTML5 video players, FairPlay DRM, MPEG-DASH/CENC streaming, and etc.

KKTV

● Launched in Taiwan in Aug 2016.● 1,000,000 registration in just 90 days.● Cloud-based video-on-demand service.● Offers contents in up to 1080p quality with

offline playback secured by DRM.● Largest TV Series Library in Taiwan, with

40% Korean titles, 30% Japanese titles and 30% Chinese/Taiwanese titles.

Content Partner

Full business line-up for video streaming industry

• With the synergy of KKTV and KKStream, KKV can provide the best fit for each field, such as:– Content aggregation– Technology component, ex: cloud

transcoder, player, content checking system…etc.

– Modulized/Full-customized platform solution

– White-brand/Co-brand service– Own-brand service with channel

partnership

Content

Technology

Product

Operation

Uniqueness of KKV

• Unlike traditional solution companies who stand far from end-users, – KKV understand most of the pain points behind a

successful video streaming service, and care about the services more than our customer.

• Unlike numerous video OTT services companies who just integrate service from external solutions,– KKV dreams big and wants to optimize each piece of

user experience as best as we can. • By the leverage of the experience between B2B and B2C

business, it will keep stimulating and incubating the best video streaming company in the world.

Thank you!

drakeguan@kkstream.com.tw