Hiromine Kanazawa attended Taipei Video Technology #3 and the Streaming Summit 2019 conference at NAB Show. At Taipei Video Technology, there were 4 speaker sessions on topics like video encoding and subtitles. The event had 80 attendees and discussions were conducted in both Chinese and English. At Streaming Summit, popular sessions focused on OTT business models, video delivery best practices, and engineering CBS's modern Super Bowl streaming workflow. The NAB Show featured over 1600 exhibitors demonstrating the latest products for broadcasting, online video, and streaming across 160 countries.

1. Taipei Video Technology #3, Streaming Summit, NAB Show 2019
Overseas Event Report
Hiromine Kanazawa, Forecast Communications Inc.
#TokyoVideoTech

2. Self-introduction
金沢 広峰 Hiromine Kanazawa
@hiromine_k
1. Chief Managing Director at
Forecast Communications Inc.
• 4cast is the online video arm of Nippon TV,
a major TV network in Japan.
Catch-up TV platform, LIVE streaming service, TV
program website and application and more, DevOps.
2. Co-Organizer at Tokyo Video Tech
3. Video Expertise
• 10 years developer and technical director in Video
Streaming industry
• M.Eng. on Computer science, Shinshu University
Illustrated by Hiroki Matsumoto, 2012
2

3. Agenda
1. Taipei Video Technology #3 “Speaker and Attended”
2. Streaming Summit 2019 “Hot Sessions”
3. NAB Show 2019 “Product Update for Streaming Industry”

4. Taipei Video Technology #3
Photograph by Brian Lee

5. Taipei Video Technology
#1: 2018.3.28
Members: 124 (As of 2019.04.20)
Organizer: Shuen-Huei Guan, Senior
Technical Director at KKStream Limited &
KKTV
Detailed: How do we start taipei video
technology by Drake Guan
(https://www.slideshare.net/drakeguan/how-do-we-
start-taipei-video-technology)
meetup.com/Taipei-Video-Technology

6. How to get to Taipei
About 3.5 hours from Japan.
Two-Airports is in Taipei.
•臺北松山機場
TSA (Taipei Songshan Airport)
•臺灣桃園國際機場
TPE (Taiwan Taoyuan International Airport)
Google Maps

9. Software Engineering in Taipei
“台湾の IT といえば iPhone の製造を手がける鴻海精密
工業、半導体生産の TSMC 、スマホメーカーの HTC 、
PC 関連メーカーの Acer・GIGABYTE・ASUS など、ハー
ドウェアを製造する企業を思い浮かべると思います。
しかし、台湾 IT はハードウェア製造だけでなく、アジア各
国に展開しているようなスマホアプリを作っている会社があっ
たり、au のビデオパスを支えるプラットフォームを作って
いる会社があったりとソフトウェアも強いのです。”
Source: “知られざる世界で活躍する台湾ITソフトウェア企業たち”,
Katz Sakai, SPARROWS Inc
(blog.sparrows.co.jp/2019/04/12/must-known-tech-companies-in-taipei)
17 Live アプリの紹介画像。ニュースリリースより引用
(m17.asia/en/media/114/20170908)

10. Taipei Video Technology #3
Date: 2019.3.13 18:30 - 21:00 (2.5h)
Attendees: 80 (Same as last time)
Sessions: 3 (+1 from last time)
Speakers: 4
Venue: CLBC大直肥皂箱
Photograph by Brian Lee

11. Organizers
Photograph by Brian Lee

12. Sponsors

13. Talks
Talk Title Speakers
1
Journey in Demuxed 2018 from
engineering viewpoint
Neal Tsai | Video Engineer@KKStream
2 狼人殺 "Wolfman Kill"
Racing Wang ＆ Jonas Chen | Senior
Engineer@17Media
3 Subtitles University
Hiromine Kanazawa | Chief Managing
Director@Forecast Communications

14. Talk 1: Journey in Demuxed 2018
Two important factors for the Next-gen per-
title encoding
1. being perceptual-wise
知覚的であること
2. being streaming-oriented
ストリーミング向けであること
ビデオのビットレートによる知覚の変化についてグラフで説明するNealさん
Photograph by Brian Lee

15. Talk 2: 狼人殺 "Wolfman Kill”
ライブストリーミングを視聴しているユーザー
同士が双方向のオンラインゲームに参加でき
る仕組みについて解説
ゲーム用ボットのダッシュボードについて解説するRacingさんとJonasさん
Photograph by Brian Lee

16. Talk 3: Subtitles University
日本語字幕のエキスパートとしてストリーミ
ングにおける日本語字幕を解説
西洋の字幕と比較して、日本語/中国語/韓国
語などアジア圏のダブルバイト言語は、キャ
ラクターセットが異なる
Photograph by Brian Lee

17. Rubies
Explain the meaning of unfamiliar, foreign, or
slang words/phrases AND/OR convey
pronunciation of kanji characters.

18. Tate-chu-yoko
Tate-chu-yoko (縦中横 in Japanese)
Half-width characters are placed side-by-side
to enhance legibility

19. Traditional approach
Burn-in subtitles to video.
Cap
Encode w/Burn-in
Clean Video Burned-in Caption Video

20. Traditional approach
•Pros.
•Support all requirements.
•The timing of subtitle display is perfect.
•Cons.
•The video gets dirty.
•Video needs to be transcoded for each subtitle
language

21. Modern approach
•Use WebVTT (Web Video Text Tracks).
•W3C standard for displaying timed text.
•Supported by all major browsers and some platforms.

22. Modern approach
WebVTT Example
WEBVTT - This file has cues.
14
00:01:14.815 --> 00:01:18.114
- What?
- Where are we now?
15
00:01:18.171 --> 00:01:20.991
- This is big bat country.
16
00:01:21.058 --> 00:01:23.868
- [ Bats Screeching ]
- They won't get in your hair. They're after the bugs.

23. Modern approach
Convert Subtitles Format
Cap Convert WebVTT

24. Modern approach
Dynamically overlay subtitle texts over video in a browser.
Clean Video
Subtitle Text
(WebVTT)

25. Modern approach
•Pros.
•The video is clean.
•Can support multiple subtitle languages with just one
video.
•Cons.
•The timing of subtitle display is not perfect.
•Some requirements can not be implemented.
•The subtitle looks like poor

26. Modern approach
Bad exp. 1
Ruby is displayed, but
too large.
Desktop (Chrome)
Expected size would be the above

27. Modern approach
Bad exp. 2
Some characters are
displayed in horizontal
face.
Desktop (Edge)

28. My approach
WebVTT + Subtitle Image
•WebVTT : Timecode
•Image : Subtitle image incleded requirements

29. My approach
Convert Subtitles Format & Create Subtitle Images
Cap Convert
WebVTT
Subtitle
Image
Subtitle
Image
Subtitle
Image

30. My approach
Dynamically overlay subtitle images over video in a browser.
Clean Video
Subtitle Image
(WebVTT)

31. My approach
•Pros.
•The video is clean.
•Can support multiple subtitle languages with just one video.
•Support all requirements
•Cons.
•The timing of subtitle display is not perfect.
•Some requirements can not be implemented.
•The subtitle looks like poor

32. Near the future
•IMSC1.1
•Support Rubies, Vertical, Bouten.
•Timing Issue

33. Media and Report
medium.com/kkstreamtechnews.tw

34. Conclusion
各セッションに対して活発な質疑応答があり、
発表への関心の高さが刺激的だった。
Photograph by Kats Sakai

35. Conclusion
ライブストリーミングやスライドのシェアは
ないので、その場でしか共有できない情報を
得られるのは参加する意義があった。
Photograph by Kats Sakai

36. Conclusion
イベントは中国語がメインだったが、ネット
ワーキングでは英語でのコミュニケーション
だったので、言葉の壁はなかった。
Photograph by Kats Sakai

37. Conclusion
Tokyo Video Tech のメンバーを温かく迎えて
いただき、改めて台北は親日であることを肌
で実感した。
Cooperation: Neal, David, Kevin & Speakers
Photograph by Brian Lee

38. Streaming Summit
Taipei & Tokyo Video Tech

39. Streaming Summit at NAB Show
No Hype. No Marketing. Just Real-World
Technical & Business Discussions,
Presentations & Fireside Chats, Covering The
Video Stack & Video Monetization

40. Streaming Summit at NAB Show
Date: 2019.4.8 - 2019.4.9
Ticket: $695.00
Sessions: 32
Speakers: over 75
Venue: Las Vegas Convention Center

41. Sponsors

42. Speakers

43. Sessions

44. Hot Sessions
•The Bussiness
•Global OTT revenue will reach $129 billion in 2023.
•Free, Subscription TVOD and Ad Supported: Hybrid Next-Gen OTT
Business Models
•Apple TV+, Disney+

45. Hot Sessions
•The Technology
•Best Practices for Deploying CMAF, DASH and HLS at Scale
•Best Practices for Video Packaging, Playback and Low-Latency
Delivery
•Engineering A Modern Super Bowl Streaming Workflow From The
Ground Up
•Using VMAF, Netflix’s Video Encoding Metric to Measure QoE

46. Session - Super Bowl Streaming
Title: Engineering A Modern Super Bowl
Streaming Workflow From The Ground Up
Zac Shenker Director of Engineering, Video Delivery,
Optimization & Experience, CBS Interactive

47. Session - Super Bowl Streaming
•an average streaming audience of 2.6 million
•an increase of 31% over the streaming audience for last year’s
game
•7.5 million unique devices
•up 20% from last year
Source: fiercevideo.com

48. Conclusion
複数トラックあるため、網羅するなら２人以
上参加が必須
セッションとNAB Show Booth と行き来は現
実的ではない（かも）
Source: NAB Show Official Site

49. NAB Show 2019

50. NAB Show 2019
Date: 2019.4.6 - 2019.4.11
Attendees: 90K+
Countries: 160+
Exhibitors: 1600+
Venue: Las Vegas Convention Center

51. NAB Show 2019
Advertising • AI • AR • Audio • Broadcast • Cable • Cybersecurity • Digital • Education •
eSports • Film • Gaming • Government and Military • Houses of Worship • IOT • IT • Live
Events • Mixed Reality • Mobile • Online Video • Podcasting • Post-Production • Radio •
Satellite • Social Media • Sports • Streaming • Television • VR
元々は放送関係者向けの展示会なんですが、最近はシネマカメラからネット配信者向けの機材
まで幅広く展示

52. Product Update for Streaming
NetflixとIntelがオープンソースとしてSVT-AV1
コーデックをリリース
Intel Xeon ScalableプロセッサとIntel Xeon D
プロセッサで実行するときにリアルタイム4K
/ 60p 10ビットエンコーディングが可能な
SVT-AV1コーデックを発表
Source: https://01.org/svt
streamingmedia.com

53. Product Update for Streaming
Source: AWS

54. Product Update for Streaming
Phenix Low Latency Solutions
real-time video streaming with less than 500
milliseconds or half a second of end-time
latency.
implementation of WebRTC technology
phenixrts.com

55. Quick Report
今回は時間の都合で Quick Report でした。

56. Thank you!
Forecast Communications Inc.
Head Office (Japan)
Imaasa Bldg. 3F
1-1-21 Higashi Shinbashi, Minato-ku,
Tokyo 105-0021, Japan
E-mail
info@4cast.co.jp
TEL
+81-3-6215-6321