Slide 1

Slide 1 text

Goͱ ΦϯσϚϯυಈը ഑৴ج൫ @__timakin__

Slide 2

Slide 2 text

• Seiji Takahashi • Github: timakin / Twitter: @__timakin__ • גࣜձࣾσΟʔɾΤψɾΤʔ • Perl / JavaScript • גࣜձࣾτϥϯεϦϛοτ • C++ (Cocos-2dx) • גࣜձࣾGunosy ৽نࣄۀ։ൃࣨ • Go / Swift ࣗݾ঺հ

Slide 3

Slide 3 text

גࣜձࣾGunosy ৽نࣄۀ։ൃࣨʹ͍ͭͯ

Slide 4

Slide 4 text

Gunosyͷ5ʙ10೥ޙͷ੒௕Λ࡞Δ΂͘ɺ VR΍ARɺԻ੠UIͳͲࠓޙීٴ͢ΔՄೳੑͷ͋Δ
 ৽͍͠σόΠε΍ٕज़Λݚڀ͠ɺ
 ৽نαʔϏεͷ্ཱͪ͛ͳͲΛߦ͏෦ॺ

Slide 5

Slide 5 text

Ϧαʔν • ւ֎ͷઌਐࣄྫͷ·ͱΊ • SDKͷެࣜDocs΍Github repoͷ
 ίʔυΛړͬͯ࠷৽ٕज़ͷ
 νϡʔτϦɾԠ༻ྫΛ୳Δ • SlackʹRSS௨஌ɺϨϙʔτڞ༗ ΍Δ͜ͱ

Slide 6

Slide 6 text

։ൃ • ͓ன͍ͭͰʹνϡʔτϦΞϧ
 ϋοΧιϯ • ্ཱ͕ͪΓظ͸
 ۃྗখن໛νʔϜͰ ΍Δ͜ͱ

Slide 7

Slide 7 text

Slide 8

Slide 8 text

Slide 9

Slide 9 text

ษڧձ։࠵

Slide 10

Slide 10 text

ຊ೔ͷΞδΣϯμ

Slide 11

Slide 11 text

GoͱΦϯσϚϯυಈը഑৴ج൫ • ಈը഑৴ͱ͸ʁ • ഑৴·ͰͷྲྀΕ • GoΛͲ͏࢖͏͔ • ·ͱΊ ΞδΣϯμ

Slide 12

Slide 12 text

ΞδΣϯμ GoͰ࡞ΔΦϯσϚϯυಈը഑৴ج൫ • ಈը഑৴ͱ͸ʁ • ഑৴·ͰͷྲྀΕ • GoΛͲ͏࢖͏͔ • ·ͱΊ

Slide 13

Slide 13 text

େ͖͘෼͚ͯ ̎ छྨ ಈը഑৴ͱ͸ʁ

Slide 14

Slide 14 text

ϦΞϧλΠϜ഑৴ • ͍ΘΏΔϥΠϒಈը • WebSocketͷ
 ίωΫγϣϯͳͲΛ
 ௨ͯ͡ϒϩʔυΩϟετ ಈը഑৴ͷछྨ

Slide 15

Slide 15 text

ΦϯσϚϯυ഑৴ • ͋Β͔͡Ί࡞੒͞Εͨ
 ಈըΛݟΔ • ಈը͕ඞཁʹͳͬͨ
 λΠϛϯάͰࣗ༝ʹ
 ࢹௌͰ͖Δ ಈը഑৴ͷछྨ

Slide 16

Slide 16 text

GoͰ࡞ΔΦϯσϚϯυಈը഑৴ج൫ • ಈը഑৴ͱ͸ʁ • ഑৴·ͰͷྲྀΕ • GoΛͲ͏࢖͏͔ • ·ͱΊ ΞδΣϯμ

Slide 17

Slide 17 text

ಈը഑৴ʹඞཁͳ࡞ۀ Ξοϓϩʔυ ө૾ॲཧ ύοέʔδԽ ഑৴

Slide 18

Slide 18 text

ಈը഑৴ʹඞཁͳ࡞ۀ Ξοϓϩʔυ ө૾ॲཧ ύοέʔδԽ ഑৴ ετϨʔδ ഑৴ऀ AWSͷS3 Bucket΍
 GCPͷCloud Storage
 ͳͲʹΞοϓϩʔυ

Slide 19

Slide 19 text

ಈը഑৴ʹඞཁͳ࡞ۀ Ξοϓϩʔυ ө૾ॲཧ ύοέʔδԽ ഑৴ Τϯίʔμʔ ετϨʔδ ࣈນૠೖ΍ೖྗө૾ͷ
 ΤϯίʔσΟϯάʹՃ͑ͯɺ αϜωΠϧͷ੾ΓऔΓͳͲ

Slide 20

Slide 20 text

ಈը഑৴ʹඞཁͳ࡞ۀ Ξοϓϩʔυ ө૾ॲཧ ύοέʔδԽ ഑৴ ετϨʔδ ಈըΛ෼ׂͯ͠
 ޮ཰తʹ഑৴Մೳͳ
 ϑΝΠϧΛੜ੒͢Δɺ
 ҉߸Խ͢Δ ύοέʔδϯά"1*

Slide 21

Slide 21 text

ಈը഑৴ʹඞཁͳ࡞ۀ Ξοϓϩʔυ ө૾ॲཧ ύοέʔδԽ ഑৴ ഑৴"1*$%/ ετϨʔδ ड৴ऀ HTTPΫϥΠΞϯτʹରͯ͠ CDNΛ௨ͭͭ͠഑৴

Slide 22

Slide 22 text

શମ૾ ετϨʔδ ഑৴ऀ ө૾ॲཧɺ
 ύοέʔδϯά ഑৴"1*$%/ ड৴ऀ

Slide 23

Slide 23 text

GoͱΦϯσϚϯυಈը഑৴ج൫ • ಈը഑৴ͱ͸ʁ • ഑৴·ͰͷྲྀΕ • GoΛͲ͏࢖͏͔ • ·ͱΊ ΞδΣϯμ

Slide 24

Slide 24 text

Ξοϓϩʔυ ө૾ॲཧ ύοέʔδԽ ഑৴ Go͕ؔΘΔͱ͜Ζ ʁ

Slide 25

Slide 25 text

Go͕ؔΘΔͱ͜Ζ ө૾ॲཧ • ఏڙը࣭ʹ߹ΘͤͨϑϨʔϜ/ϏοτϨʔτͷௐ੔ • ϩεΛ཈͑ͨѹॖ ύοέʔδԽ • m3u8 + TSϑΝΠϧͷੜ੒ • ετϨʔδ΁ͷΞοϓϩʔυ ഑৴ • ಈըͷJSONΛฦ͢௨ৗͷAPIػೳ • αϜωΠϧ΍ؔ࿈ಈըੜ੒

Slide 26

Slide 26 text

Կ΋ߟ͑ͳ͍഑৴ mp4

Slide 27

Slide 27 text

Կ΋ߟ͑ͳ͍഑৴ mp4 Ϋιॏ͍

Slide 28

Slide 28 text

HLS഑৴ • HTTP Live Streaming • Apple͕iOS޲͚ʹ։ൃͨ͠ετϦʔϛϯάϓϩτίϧ • WindowsͳͲ͸࠶ੜ؀ڥ͕ݶఆ • ϫʔΫϑϩʔ • ಈըίϯςϯπͷΞοϓϩʔυ • ηάϝϯτԽ • ಉ࣌ʹαϜωΠϧੜ੒΍഑৴඼࣭ผͷੜ੒ͳͲ΋ • IndexFile(m3u8)Λ഑৴ͯ͠ɺΫϥΠΞϯτ͸
 ΠϯσοΫε͞ΕͨMPEG-2 TSϑΝΠϧΛಡΈʹߦ͘

Slide 29

Slide 29 text

HLSͷத਎ segmented media files (MPEG-2 TS) Index file (m3u8)

Slide 30

Slide 30 text

HLS഑৴ͷྲྀΕ NV )JHI NV .JE NV -PX

Slide 31

Slide 31 text

؆୯ʹHLSΤϯίʔυ͢Δํ๏ ffmpeg Elastic Transcoder

Slide 32

Slide 32 text

؆୯ʹHLSΤϯίʔυ͢Δํ๏ ffmpeg Elastic Transcoder

Slide 33

Slide 33 text

ffmpeg • ಈըͱԻ੠Λه࿥ɾม׵ɾ࠶ੜ͢ΔͨΊͷϑϦʔιϑτ ΢ΣΞ • ffmpegΛར༻ͨ͠Τϯίʔυɾσίʔυ͕Ͱ͖Δ
 ঎༻ιϑτ΢ΣΞ͸ஶ࡞ݖ৵֐໰୊ΛሃΉ…?
 https://blog.tai2.net/mpegla_and_ffmpeg.html

Slide 34

Slide 34 text

ffmpeg-based API • Docker multi-stage buildͰੜ੒͞ΕͨimageΛݩʹɺ execܦ༝ͰffmpegΛݺͿɻ • binding࣮૷͔ίϚϯυͷexecuteͰݺͿ΄͔ͳ͍ɻ • ݸਓతʹ͸GKEͰ্هimageΛݩʹͨ͠ίϯςφΛཱͯ ͯɺੜ੒݁ՌΛGoogle Cloud StorageʹΞοϓϩʔυ͢ ΔͳͲ͕ྑ͍ͱࢥͬͯΔɻ

Slide 35

Slide 35 text

ffmpeg-based API media file Kubernetes Engine Cloud Storage goroutine

Slide 36

Slide 36 text

ffmpeg encoding

Slide 37

Slide 37 text

ffmpeg encoding

Slide 38

Slide 38 text

Encoding command mp4ΛAACɺH.264ͰΤϯίʔυ͠ɺ 4ඵ͝ͱͷηάϝϯτʹ෼ׂͨ݁͠ՌΛอଘ͢Δίʔυɻ ಉҰσΟϨΫτϦʹm3u8ͱtsϑΝΠϧ͕ੜ੒͞ΕΔɻ

Slide 39

Slide 39 text

Exec Commands ffmpegͷbinding࣮૷(goav)Λ࢖͏ͷ΋͋Γɻ ͨͩɺॊೈͳΦϓγϣϯઃఆͳͲΛؑΈΔͱffmpegΛ
 ͦͷ··࣮ߦͨ͠ํ͕ྑ͍ɻ

Slide 40

Slide 40 text

ffmpeg bindingΛ࢖Θͳ͍৔߹͸۪௚ʹݺͿ͔͠ͳ͍ Exec Commands

Slide 41

Slide 41 text

goroutineΛར༻ͯ͠ੜ੒͞Εͨ ϑΝΠϧΛฒྻΞοϓϩʔυ Parallel upload

Slide 42

Slide 42 text

ffmpeg-based APIͷ·ͱΊ • αʔόʔʹΠϯετʔϧ͞ΕͨffmpegΛར༻͢Δɻ • GKEͳͲΛ࢖͍ͭͭɺDocker multi-stage buildͰੜ੒ ͞ΕͨimageΛݩʹɺexecܦ༝ͰffmpegΛݺͿํ๏΋
 ͋Γɻ • binding࣮૷ΑΓ͸ίϚϯυͷexecuteΛ͓͢͢Ίɻ

Slide 43

Slide 43 text

؆୯ʹHLSΤϯίʔυ͢Δํ๏ ffmpeg Elastic Transcoder

Slide 44

Slide 44 text

Elastic Transcoder • AWS্ͷϚωʔδυಈըΤϯίʔμʔ • ίϯςϯπͷ࠶ੜ࣌ؒΛϕʔεʹ՝ۚ͞ΕΔ • ੜ੒݁Ռ͸S3ΦϒδΣΫτͱͯ͠อଘ͞ΕΔ

Slide 45

Slide 45 text

Elastic Transcoder input bucket media file Lambda Transcoder output bucket Transcoding Pipeline

Slide 46

Slide 46 text

Elastic Transcoder input bucket media file Lambda Transcoder output bucket Transcoding Pipeline

Slide 47

Slide 47 text

No content

Slide 48

Slide 48 text

• goͰlambdaؔ਺Λॻ͚ΔϥΠϒϥϦ • όΠφϦͱͦΕΛݺͼग़͢index.jsΛੜ੒ͯ͠ɺ
 Node.jsϥϯλΠϜͰ࣮ߦ͢Δ go-apex

Slide 49

Slide 49 text

Elastic Transcoder input bucket media file Lambda Transcoder output bucket Transcoding Pipeline

Slide 50

Slide 50 text

S3 Observation

Slide 51

Slide 51 text

Elastic Transcoder input bucket media file Lambda Transcoder output bucket Transcoding Pipeline

Slide 52

Slide 52 text

Parameter Tuning

Slide 53

Slide 53 text

Elastic Transcoder ·ͱΊ • go-apexʹΑΔS3؂ࢹͱม׵ॲཧ • ࠷ۙLambda͕σϑΥϧτͰGoରԠ͢Δతͳൃදͨ͠ ͠஌ݟͨ·ͬͨΒͦͬͪʹ͠·͠ΐ͏ɻ • ϚωʔδυͰ৭ʑ΍ͬͯ͘ΕΔ෼ɺ෼ׂස౓ͳͲͷ
 ύϥϝʔλʔνϡʔχϯάʹ஫ҙ͠·͠ΐ͏ɻ

Slide 54

Slide 54 text

ʕ ◔ϖ◔ʔ < Thank You!!