Fragmented MP4のおはなし

Transcript

1. 'SBHNFOUFE
   .1ͷ͓͸ͳ͠ 4USFBNJOH
   $POGFSFODF
   
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2. ࣗݾ঺հ w ϝςΦ !NFUFPS@TBBO
   w ෱ԬʹॅΜͰ͍Δେֶ೥ੜ
   w ઐ໳͸ࣗવݴޠॲཧ
   w

   ࠷ۙͷझຯ͸6%1ͷύέοτଛࣦ࣌ͷϦΧόʔʹؔ͢Δݚڀ
   w ๭ࣾͰϥΠϒ഑৴ج൫ͷߏஙʹؔΘ͍ͬͯͨ

3. -JWF
   4USFBNJOH
   'PSNBU

4. -JWF
   4USFBNJOH
   'PSNBU w 35.1
   w 435
   w )551
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   w .1&(%"4)
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5. -JWF
   4USFBNJOH
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   w 435
   w )551
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   w

   8FC35$

6. )551
   -JWF
   4USFBNJOH w "QQMF͕։ൃɻ
   w 3'$ͱͯ͠ඪ४Խɻ
   w NVϓϨΠϦετΛ࢖ͬͯ഑৴ɻ
   w .1&(54'SBHNFOUFE
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   .FEJB
   1MBZMJTU 4FHNFOU
    4FHNFOU
    .FEJB
   1MBZMJTU 4FHNFOU
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   1MBZMJTU MJTUNV QNV UT UT QNV UT UT QNV

7. w .1&(-"͕։ൃɻ
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    .BOJGFTU MJTUNQE JOJUNT NT NT MJTUNQE NT NT MJTUNQE

8. IMTKT͕ͻͨ͢Βॏ͍໰୊

9. IMTKT w )-4͸جຊతʹ4BGBSJͳͲɺݶΒΕͨϒϥ΢βͰ͔͠࠶ੜग़དྷͳ͍ɻ
   w ͦͷͨΊɺඇରԠϒϥ΢βΛαϙʔτ͢ΔͨΊʹ͸IMTKTͱݺ͹ΕΔ +BWB4DSJQUͷϥΠϒϥϦΛ࢖͏ඞཁ͕͋Δɻ
   w ΄͔ʹ΋WJEFPKTDPOUSJCIMTͳͲ΋͋Δ͕ɺݱࡏओྲྀͳͷ͸IMTKTɻ

10. UTEFNVYFSKT w NVΛऔಘ
    w 54ϑΝΠϧΛऔಘ
    w 54ϑΝΠϧ͔Βө૾ͱԻ੠ΛऔΓग़͢
    w औΓग़ͨ͠σʔλΛ*40#.''ʹม׵͢Δ
    w

    .FEJB4PVSDF&YUFOTJPOΛ࢖ͬͯ࠶ੜ͢Δ

11. UTEFNVYFSKT w NVΛऔಘ
    w 54ϑΝΠϧΛऔಘ
    w 54ϑΝΠϧ͔Βө૾ͱԻ੠ΛऔΓग़͢
    w औΓग़ͨ͠σʔλΛ*40#.''ʹม׵͢Δ
    w

    .FEJB4PVSDF&YUFOTJPOΛ࢖ͬͯ࠶ੜ͢Δ

12. UTEFNVYFSKT .1&(54 1"5 1.5 7JEFP
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     ŋŋŋ

13. UTEFNVYFSKT .1&(54 1"5 1.5 7JEFP
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     ŋŋŋ ϓϩάϥϜΛऔಘ

14. UTEFNVYFSKT .1&(54 1"5 1.5 7JEFP
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     7JEFP
    %BUB
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     ŋŋŋ ө૾΍Ի੠ͷ1*%Λऔಘ

15. UTEFNVYFSKT .1&(54 1"5 1.5 7JEFP
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     ŋŋŋ ө૾Λநग़

16. UTEFNVYFSKT .1&(54 1"5 1.5 7JEFP
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     ŋŋŋ /"-Ϣχοτͷ৘ใΛऔಘ

17. UTEFNVYFSKT .1&(54 1"5 1.5 7JEFP
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     ŋŋŋ Ի੠Λநग़

18. UTEFNVYFSKT .1&(54 1"5 1.5 7JEFP
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     "VEJP
    %BUB
     7JEFP
    %BUB
     "VEJP
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     ŋŋŋ ϔομʔ৘ใΛऔಘ

19. UTEFNVYFSKT .1 *40
    #.'' 7JEFP
    %BUB
     "VEJP
    %BUB
     GUZQ NPPW NWIE USBL NEBU

    7JEFP
    %BUB 3FNVYJOH
    NQSFNVYFSKT

20. UTEFNVYFSKT

21. 'SBHNFOUFE
    .1

22. 'SBHNFOUFE
    .1 w *40ʹنఆ
    w #PYͱ͍͏୯ҐͰ֤छͷ৘ใ͕෼͔Εͯ֨ೲ͞Ε͍ͯΔ
    w ݱࡏ)-4ͱ.1&(%"4)ͷ྆ํͰαϙʔτ͞Ε͍ͯΔ

23. 'SBHNFOUFE
    .1 w GUZQ
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    UZQF
    w NPPW
    IFBEFS
    EBUB
    w NEBU
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    EBUB GUZQ NPPW NWIE

    USBL NEBU 7JEFP
    %BUB ௨ৗͷ.1 ϑΝΠϧ
    IPHFNQ

24. 'SBHNFOUFE
    .1 w GUZQ
    GJMF
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    w TJEY
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    NPPG
    
    NEBU
    w NPPG
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    w NEBU
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    EBUB

    GUZQ NPPW NWIE USBL NEBU NPPG NGIE USBG 7JEFP
    %BUB 'SBHNFOUFE
    .1 ॳظԽηάϝϯτ
    JOJUNT ηάϝϯτϑΝΠϧ
    NT

25. 'SBHNFOUFE
    .1 w )-4ͷ৔߹ɺ&9597&34*0/
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    w &959."1ͰॳظԽηάϝϯτΛ ࢦఆ͢Δ͚ͩ
    w

    .1&(54ͷͱ͖ͱϑΥʔϚοτ͸ ͋·ΓมΘΒͳ͍ #EXTM3U #EXT-X-VERSION:4 #EXT-X-TARGETDURATION:10 #EXT-X-MEDIA-SEQUENCE:0 #EXT-X-MAP:URI=“init.mp4" #EXTINF 10.001 segment1.mp4 #EXTINF 10.001 segment2.mp4

26. 'SBHNFOUFE
    .1 w .1&(%"4)ͷ৔߹͸ݩʑαϙʔτ ͞Ε͍ͯΔ
    w *OJUJBMJ[BUJPO
    4PVSDF63-ʹॳظԽη άϝϯτΛࢦఆ͠ɺ4FHNFOU63-ʹ அยϑΝΠϧΛࢦఆ͢Δ͚ͩ <?xml version="1.0"?>

    <MPD xmlns="urn:mpeg:dash:schema:mpd:2011" minBufferTime="PT1.500S" type="static" mediaPresentationDuration="PT0H9M56.466S" maxSegmentDuration="PT0H0M4.000S" profiles="urn:mpeg:dash:profile:full:2011"> <ProgramInformation moreInformationURL="http:// gpac.sourceforge.net"> <Title>./output.mpd</Title> </ProgramInformation> <Period duration="PT0H9M56.466S"> <AdaptationSet segmentAlignment="true" maxWidth="320" maxHeight="180" maxFrameRate="30" par="16:9" lang="und"> <ContentComponent id="1" contentType="video" /> <ContentComponent id="2" contentType="audio" /> <Representation id="1" mimeType="video/mp4" codecs="avc3.640014,mp4a.40.2" width="320" height="180" frameRate="30" sar="1:1" audioSamplingRate="48000" startWithSAP="1" bandwidth="631708"> <AudioChannelConfiguration schemeIdUri="urn:mpeg:dash: 23003:3:audio_channel_configuration:2011" value="2"/> <SegmentList timescale="1000" duration="4000"> <Initialization sourceURL=“init.mp4”/> <SegmentURL media=“segment1.m4s”/> <SegmentURL media=“segment2.m4s”/> </SegmentList> </Representation> </AdaptationSet> </Period> </MPD>

27. 'SBHNFOUFE
    .1 )-4ͱ.1&(%"4)ͷڞ௨Խ IUUQTCMPHTBLBNBJDPNKQDNBGDNBGMPXMBMBUFODZMJWFIUNMΑΓ

28. .FEJB
    4PVSDF
    &YUFOTJPOT w )551μ΢ϯϩʔυΛར༻ͯ͠ετϦʔϛϯά࠶ੜΛߦ͏ͨΊʹ8$ʹΑͬ ͯඪ४Խ͞Ε͍ͯΔ+BWB4DSJQUͷ"1*
    w ॳظԽʹඞཁͳϔομ৘ใؚ͕·Ε͍ͯΔॳظԽηάϝϯτͱ୹͍࣌ؒͰ ۠੾ΒΕͨϝσΟΞσʔλຊମؚ͕·ΕΔϝσΟΞηάϝϯτ͕ඞཁ
    w ͭ·Γɺ'SBHNFOUFE
    .1͸શͯຬ͍ͨͯ͠ΔͨΊɺͦͷ··࠶ੜ͢Δ ͜ͱ͕ग़དྷΔ

29. .FEJB
    4PVSDF
    &YUFOTJPOT w +BWB4DSJQUͷϥΠϒϥϦEBTIKT΍IMTKTΛ࢖͏͜ͱʹΑΓɺࣗલͰ࣮૷ͤ ͣʹͦͷ··࠶ੜ͢Δ͜ͱ͕ग़དྷΔɻ 'SBHNFOUFE
    .1 GUZQ NPPW NWIE USBL NEBU

    NPPG NGIE USBG 7JEFP
    %BUB .FEJB
    4PVSDF
    &YUFOTJPOͰ௚઀࠶ੜ EBTIKTIMTKT

30. $."'

31. $PNNPO
    .FEJB
    "QQMJDBUJPO
    'PSNBU w *40*&$
    
    w ϚχϑΣετϑΝΠϧ͸ࢦఆ͞Ε͍ͯͳ͍ͨΊɺطଘͷNV )-4 ΍ .1% %"4) ͕ͦͷ··࢖͏͜ͱ͕ग़དྷΔ
    

    w ϝσΟΞϑΥʔϚοτʹ*40
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    .1 Λ࢖͏͜ͱ͕ఆٛ ͞Ε͍ͯΔ

32. $PNNPO
    .FEJB
    "QQMJDBUJPO
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    5SBOTGFS
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    w ηάϝϯτϑΝΠϧ͕Τϯίʔμ͔Βશͯૹ৴͞ΕΔલʹɺνϟϯΫΛΫ ϥΠΞϯτଆͰ࠶ੜ͢Δ

33. $PNNPO
    .FEJB
    "QQMJDBUJPO
    'PSNBU w $."'Ͱ͸)551ͷ$IVOLFE
    5SBOTGFS
    &ODPEJOHΛ࢖͏
    w ηάϝϯτϑΝΠϧΛߋʹ෼ׂͨ͠΋ͷΛνϟ ϯΫͱݺͿ
    w ηάϝϯτϑΝΠϧ͕Τϯίʔμ͔Βશͯૹ ৴͞ΕΔલʹɺνϟϯΫΛΫϥΠΞϯτଆͰ

    ࠶ੜ͢Δ NEBU NPPG NGIE USBG 7JEFP
    %BUB 'SBHNFOUFE
    .1 ηάϝϯτϑΝΠϧ
    NT νϟϯΫ
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    NEBU NPPG NGIE USBG 7JEFP
    NEBU NPPG NGIE USBG 7JEFP
    

34. $PNNPO
    .FEJB
    "QQMJDBUJPO
    'PSNBU w νϟϯΫͷେ͖͞͸ࣗ༝ͳͷͰɺΑΓ௿஗ԆΛ࣮ ݱ͍ͨ͠ͳΒখ͍͞αΠζͰ۠੾Δ͜ͱ΋Մೳ
    w νϟϯΫΛ࠶ੜ͢Δʹ͸ɺηάϝϯτͷμ΢ϯϩʔ υ͕׬ྃ͢Δલʹ$IVOLFE
    5SBOTGFSͰड͚औͬ ͨσʔλΛ࠶ੜόοϑΝʹඇಉظͰ௥Ճ͢Δඞཁ ͕͋Δ
    w

    ͦͷͨΊɺ࣮ࡍʹ࠶ੜग़དྷΔϓϨΠϠʔ͕গͳ͍ NEBU NPPG NGIE USBG 7JEFP
    %BUB 'SBHNFOUFE
    .1 ηάϝϯτϑΝΠϧ
    NT νϟϯΫ
    NTͷҰ෦ NEBU NPPG NGIE USBG 7JEFP
    NEBU NPPG NGIE USBG 7JEFP
    NEBU NPPG NGIE USBG 7JEFP
    

35. ͓·͚ IUUQTHJUIVCDPN%BTI*OEVTUSZ'PSVNEBTIKTQVMMΑΓ

36. ͓͠·͍