Sharing of Demuxed 2019 from engineer perspective and highlight the hot technologies this year.

1. Sharing of Demuxed 2019
Neal Tsai, Engineering Manager@KKStream
2019/12/27

2. ● Demuxed 2019
● Hot topics this year
● Low Latency Live
● Perceptualization/Human Visual System
● Video Codecs
● Take away
Agenda
2

3. Demuxed 2019
3

4. NO PAID CONTENT, EVER
AFFORDABLE
FOR EVERYONE IN THE
COMMUNITY
https://2019.demuxed.com/

5. 5https://demuxed.com/
Demuxed 2018 Demuxed 2019
We are about 1/7 scale of Demuxed 2019 today!!!
https://www.twitch.tv/videos/498702435https://2019.demuxed.com/

6. https://www.twitch.tv/videos/498702435

7. 7
https://www.twitch.tv/videos/323919819
Community of Video Tech Meetup - 2018

8. 8
https://www.twitch.tv/videos/323919819
https://www.twitch.tv/videos/498702435
Community of Video Tech Meetup - 2019

9. Topics in Demuxed 2019
3. 10%, Perceptualization/Human Visual System
9
2. 15%, Codec/Transcoding
1. 33%, Live, Low latency, SSAI
4. Others...

10. Low Latency
Live
10

11. 11
What’s Latency?

12. 12
CDN
Live
Transcoder Packager
Infra. of live Streaming
First mile ISP or
DirectConnect
End to End Latency

13. 13
What’s Low Latency?

14. 14
https://www.wowza.com/blog/streaming-protocols

15. 15
CDN
Live
Transcoder Packager
Infra. of live Streaming
First mile ISP or
DirectConnect
? ? ? ? ? ? ?
End to End Latency

16. 16
RTMP
01
RTP
02
CMAF and
DASH/HLS Ingest03
LL-HLS
04
LHLS
05
WebRTC
07
SRT (Secure Reliable
Transfer)08
Zixi
09
On-Shelf Low Latency Technologies
DASH-LL
06
HTTP over QUIC
(HTTP/3)10

17. CMAF and
DASH/HLS Ingest
17

18. 18
CDN
Live
Transcoder Packager
Infra. of live Streaming
First mile ISP or
DirectConnect
CMAF and DASH/HLS Ingest
CMAF Ingest
DASH/HLS Ingest
https://dashif-documents.azurewebsites.net/Ingest/master/DASH-IF-Ingest.html#general
End to End Latency

19. DASH-LL, LHLS and
LL-HLS
19

20. 20
CDN
Live
Transcoder Packager
Infra. of live Streaming
First mile ISP or
DirectConnect
End to End Latency
DASH-LL
LHLS
LL-HLS

21. 21https://www.twitch.tv/videos/498702435

22. 22
Potential patent issue.
CDN compatibility issue.https://www.twitch.tv/videos/498702435

23. 23
Fastest
2nd
3rd
https://www.twitch.tv/videos/498702435

24. 24
Is it going to happen soon?
Not so fast as legacy always
matters.

25. Perceptualization/
Human Visual
System
25

26. 26
https://www.twitch.tv/videos/498702435

27. 27
https://www.twitch.tv/videos/498702435

28. 28

29. 29
Specific scene in Tears of Steel
How many bits are
used here?
From HVS, it should be
as little as possible.
But does it happen in
your encoder?

30. 30
Let’s check the QP Map
QP = High Compression
QP = Low Compression

31. 31

32. 32

33. Video Codecs
33

34. 34Ref: https://forum.shotcut.org/t/just-a-heads-up-on-the-rebel-alliances-av1-video-codec/4476
Video Codecs

35. 35Ref: https://forum.shotcut.org/t/just-a-heads-up-on-the-rebel-alliances-av1-video-codec/4476
Video Codecs
2020
EVC: Baseline +
Enhanced
LCEVC: Codec agnostic
VVC: H.266, successor of
HEVC

36. Take away
36

37. 37
1. Streaming Tech is evolving faster than you think.
3. Easier (or harder) to differentiate yourself now.
4. Crazy chaos on Low Latency Live and Video Codecs.
Take away
2. Perceptualization is hotter and hotter.

38. Thank you!
38