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DMM.com LLC supports Japanese Streaming Community

DMM.com LLC supports Japanese Streaming Community

小川楓太 - DMM.com LLC

2018/06/28
Streaming Conference #3
https://streaming-lab.connpass.com/event/90574/presentation/

#streamingconf

B1a92722c01c73a58b8db38094a3f23e?s=128

Futa Ogawa

June 28, 2018
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Transcript

  1. DMM.com LLC supports Japanese Streaming Community Futa Ogawa, DMM.com

  2. •1995೥ੜ·Εͷ23ࡀ •޷͖ͳςΫϊϩδʔ •JavaScript (Virtual DOM) •Firebase •CDN •HLS •Streaming ConferenceͷӡӦ

    DMM.comάϧʔϓ ձ௕ࣨʗ NEWPEACE Inc. ڞಉ૑ۀऀɾςΫχΧϧσΟϨΫλʔ খ઒෨ଠ
  3. Streaming Conference Overview • From February 2018 • Slack members:

    95+ • Total event participants: 360+ • Total hashtag Tweets: 460+
  4. !ϥΠϒετϦʔϛϯάͷ஌ݟ ฉ͖͍͚ͨͲɺͳ͔ͳ͔ͳ͍ͳ͊

  5. None
  6. ͱ͍͏ྲྀΕͰ࢝·Γ·ͨ͠

  7. DMMͷਓͰ͕͢ ͓࢓ࣄͰ͸ಈը΍ͬͯ·ͤΜ झຯͰ͢

  8. ࠷ۙͷ͓࢓ࣄɿ Ϧαʔνϟʔ ͱ৽نࣄۀͷ४උ

  9. None
  10. None
  11. Apple WWDC 2018 ߦ͖ͬͯ·ͨ͠ʂ

  12. Labs @ Apple WWDC 2018

  13. None
  14. None
  15. WWDCͷ஌ݟΛڞ༗ͭͭ͠ ܰ͘એ఻͍ͤͯͩ͘͞͞

  16. ⚠ Safariݶఆͷ৔߹͕͋Γ·͢

  17. Q1: Appleܥ΁ͷରԠ͸fMP4ૂ͓͚ͬͯ͹ྑ͞ ͦ͏ʁ

  18. A1: fMP4ʹରԠ͢Ε͹OK! MPEG-2 TSΛαϙʔτ͠ͳ͘ͳΔ͜ͱ͸ͳ͍͕ɺ৽ػೳʢྫɿ4Kʣ͸fMP4ʹ͔͠ରԠ͠ͳ͍৔߹΋͋Δ

  19. Q2: fMP4ରԠͯ͠ͳ͍iOS9Λ੾Γ͍ͨͷͰ͕͢ɺ iOS9͕͍ͭࢮʹ·͔͢ʁ

  20. A2: iOS 9͸طʹαϙʔτऴ͍ྃͯ͠Δɻ

  21. Q3: ηάϝϯτϑΝΠϧͷಈըϑϨʔϜͷઌ಄͕IϑϨʔϜͰ͸ແ͍৔ ߹ɺHLSͷΞμϓςΟϒετϦʔϜͷը࣭มߋΛߦ͏͜ͱ͸Apple ੡඼Ͱ͸Մೳʁ

  22. LT 4ͷ @saturday06 ͞Μ͔Βͷ࣭໰Ͱ͢

  23. Ή͔͍ͣ͠

  24. None
  25. None
  26. ී௨ͷηάϝϯτ 01.ts 02.ts 03.ts 04.ts Segment ɾɾɾ

  27. ී௨ͷηάϝϯτ 01.ts 02.ts 03.ts 04.ts I Frame Segment ɾɾɾ

  28. ηάϝϯτͷத৺ʹI Frame 01.ts 02.ts 03.ts 04.ts I Frame Segment ɾɾɾ

  29. ηάϝϯτͷத৺ʹI Frame 01.ts 02.ts 03.ts 04.ts I Frame Segment ͜ͷλΠϛϯάͰ੾Γସ͑Ͱ͖Δʁ

    ɾɾɾ
  30. A3: ࢓༷ͱͯ͠͸ՄೳɻγʔΫʢϥϯμϜΞΫηεʣ ͨ͠৔߹͸ɺ௚લͷηάϝϯτ͕ඞཁʹͳΔɻ ηάϝϯτͷத৺ΛIϑϨʔϜʹ͢Δ͜ͱͰ10%΄ͲηάϝϯτϑΝΠϧ༰ྔΛ࡟ݮՄೳͳͷͰํ๏࿦ͱͯ͋͠Γ More: https://developer.apple.com/library/archive/documentation/General/Reference/HLSAuthoringSpec/Requirements.html

  31. ී௨ͷηάϝϯτ 01.ts 02.ts 03.ts 04.ts I Frame Segment ɾɾɾ 01.tsͷ

    I Frameͷ Өڹൣғ
  32. ηάϝϯτͷத৺ʹI Frame 01.ts 02.ts 03.ts 04.ts I Frame Segment ɾɾɾ

    01.tsͷ I Frameͷ Өڹൣғ
  33. ηάϝϯτͷத৺ʹI Frame 01.ts 02.ts 03.ts 04.ts I Frame Segment ͜ͷλΠϛϯάͰ੾Γସ͑Ͱ͖Δ͕ɺ01.tsͱ02.ts͕ඞཁʹͳΔ

    ɾɾɾ 01.tsͷ I Frameͷ Өڹൣғ
  34. Q4: Redundant Stream͸ηάϝϯτಉظͯ͠ ͳͯ͘΋Α͍ʁ

  35. Redundant Streamͱ͸

  36. None
  37. #EXTM3U #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=200000, RESOLUTION=720x480 http://ALPHA.mycompany.com/lo/prog_index.m3u8 #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=200000, RESOLUTION=720x480 http://BETA.mycompany.com/lo/prog_index.m3u8 #EXT-X-STREAM-INF:PROGRAM-ID=1,

    BANDWIDTH=500000, RESOLUTION=1920x1080 http://ALPHA.mycompany.com/md/prog_index.m3u8 #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=500000, RESOLUTION=1920x1080 http://BETA.mycompany.com/md/prog_index.m3u8
  38. #EXTM3U #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=200000, RESOLUTION=720x480 http://ALPHA.mycompany.com/lo/prog_index.m3u8 #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=200000, RESOLUTION=720x480 http://BETA.mycompany.com/lo/prog_index.m3u8 #EXT-X-STREAM-INF:PROGRAM-ID=1,

    BANDWIDTH=500000, RESOLUTION=1920x1080 http://ALPHA.mycompany.com/md/prog_index.m3u8 #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=500000, RESOLUTION=1920x1080 http://BETA.mycompany.com/md/prog_index.m3u8 ৑௕ԽͷͨΊʹ .m3u8 ϚχϡϑΣετϑΝΠϧʹಉ͡ղ૾౓Ͱ2ͭͷετϦʔϜΛهड़͢Δ͜ͱ
  39. A4: ಉظͯ͠ͳͯ͘OKɻී௨ͷϚϧνϏοτ Ϩʔτͱಉ͡ɻ Timestamp͚ͩΛج४ͱͯ͠ಡΈࠐΉͷͰɺ2ͭͷετϦʔϜͰϥά͕͋ͬͨ৔߹͸ר͖໭ΓͳͲ͕ى͜ΔՄೳੑ͕͋Δ

  40. Q5: CMAF͔൱͔͸ͱ΋͔͘ɺ௿஗ԆHLS͸Ͳ ͏͢Δ༧ఆʁ

  41. A5: ͍·৭ʑͳ΍ΓํΛߟ͍͑ͯΔ͚ΕͲɺ ·ͩݴ͑ͳ͍ɻ

  42. Q6: VP9Λ͍ͭαϙʔτ͢Δ͔ɺ·ͨAV1΁Ͳ ͷ͘Β͍ੵۃతʹؔΘ͍ͬͯ͘ͷ͔ʁ

  43. A6: VP9͸αϙʔτ͠ͳ͍ͩΖ͏ɻ AV1ʹ͍ͭͯ͸ൿີ

  44. Summary

  45. Summary: DMM͸͍͍ͧ

  46. Summary: DMM͸͍͍ͧ Apple͸HLSʹ΋ܧଓతʹ౤ࢿͯͦ͠͏

  47. Japanese Streaming Community͔Β࣭໰͕ ͋Ε͹౴͑ΔΑʂ by Apple AV Engineer ࿈བྷઌΛ஌Γ͍ͨํ͸࠙਌ձͰ͓੠͕͚͍ͩ͘͞

  48. None
  49. DMMͰ͸ಈըܥΤϯδχΞͷ ࠾༻΋ੵۃతʹߦͳ͓ͬͯΓ·͢ʂ ͝ڵຯͷ͋Δํ͸࠙਌ձͰ͓੠͕͚͍ͩ͘͞

  50. None
  51. https://inside.dmm.com/