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映像制作現場における高解像度映像IP伝送装置の提案と実装 / Proposal and Implementation of Delivery System for High Resolution Video at Video Production Site
Yusei Yamanaka
February 04, 2017
Technology
0
140
映像制作現場における高解像度映像IP伝送装置の提案と実装 / Proposal and Implementation of Delivery System for High Resolution Video at Video Production Site
Yusei Yamanaka
February 04, 2017
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Transcript
ө૾੍࡞ݱʹ͓͚Δ ߴղ૾ө૾*1ૹஔͷఏҊͱ࣮ 1SPQPTBMBOE*NQMFNFOUBUJPOPG%FMJWFSZ4ZTUFNGPS)JHI3FTPMVUJPO7JEFP BU7JEFP1SPEVDUJPO4JUF ڥใֶ෦ଜҪݚڀࣨ"SDI NJZVLLJ ࢁத༐
എܠʕ,ɾ,ͷීٴ ͷΦϦϯϐοΫʹ͚ͯɺ,ө૾ 6MUSB)% ɾ,ө૾ 4VQFS)JHI7JTJPO ͷχʔζ͕ߴ·͍ͬͯΔ ʹ,ө૾ɾ,ө૾ͷ࣮༻์ૹ͕ߦΘΕɺຽੜ͚ͷΧϝϥσΟεϓϨΠ
ࠓޙண࣮ʹීٴ͍ͯ͘͠ݟࠐΈ
എܠʕ*1ૹͷීٴ ์ૹہͳͲͷө૾੍࡞ݱͰɺ,ɾ,ө૾ͷҠߦͷλΠϛϯάͰɺ ڌͷө૾ૹʹ͓͍ͯωοτϫʔΫϦιʔεΛͬͨ*1ૹͷීٴΛૂ͍ͬͯΔ طଘͷઃඋʹΘΕ͍ͯΔಉ࣠έʔϒϧͰߴपʹΑΔݮਰ͕͋ΔͨΊɺ ଠ͍͘έʔϒϧΛར༻͢Δ͔ɺෳຊͷଋʹͯ͠ར༻͢Δඞཁ͕͋ͬͨ ө૾ػثͱൺͯൺֱతʹ҆ՁͳωοτϫʔΫػثΛ͏͜ͱ͕Ͱ͖Δ ө૾৴߸ͷଞʹՃใͳͲΛૹ͢Δ͜ͱ͕Ͱ͖Δ
ૹखஈͷέʔϒϧͱͯ͠߹ཧతͳޫϑΝΠόʔΛ༻͢Δ͜ͱ͕Ͱ͖Δ
എܠʕࣗࣗͷܦݧ ࣮ࡍʹࢲ͕ڈͷՆʹɺນுϝοηͰ#4ͷ์ૹΛΦϖϨʔγϣϯͨ͠ ઢܥ౷ෳࡶʹͳͬͯ͘Δʜ ͳʹΑΓ͜ΕΒΛվળ͍ͨ͠
ө૾ͷ*1ૹஔɺޫϑΝΠόʔΛ༻͍ͨө૾ػثɺ͢Ͱʹଟ͘ͷࣄྫ͕͋Δ ͔͠͠ɺ͍͔ͭ͘ͷ͕͋Δ ͜Ε͔Βͷ࣌ʹ͓͚ΔʮڌͰͷө૾ͷ*1ૹʯΛతͱͨ͠։ൃதͷ ͷ͕ଟ͘ɺʮڌͰͷө૾ͷ*1ૹʯʹ͓͚Δཁ๊݅͑Δ͕ղ໌͞Εͯͳ͍ #MBDLNBHJD4UVEJP$BNFSB
1'62( ڌؒͷૹΛతͱ͍ͯ͠Δ Χϝϥʹ4'1͕͋Δ͕*1ΛΒͳ͍
͜Ε͔Βͷ࣌ʹ͓͚Δʮڌʢө૾੍࡞ݱʣͰͷө૾ͷ*1ૹʯʹ͓͍ͯɺͦ ͷཁ݅Λચ͍ͩ͠ɺ*1ૹ͕࣮ࡍʹ༏Ґʹ׆༻Ͱ͖Δ͔Λݕূ͢Δ త ͜ΕΒͷݕূͷͨΊɺຊݚڀͰඇѹॖͰ,ө૾ͷ*1ૹஔΛߦ͏ஔΛ࣮ͨ͠ ίετ໘Ͱ༏Ґͳ൚༻1$Λ༻͍ͨιϑτΣΞɺϨϕϧͰ৴߸Λѻ͏͜ͱ͕Ͱ͖ Δ'1("Λ༻͍ͨϋʔυΣΞͷͭͰ࣮ͨ͠
ө૾੍࡞ݱͷߏ
ݱࡏͷө૾੍࡞ݱͷߏ ΧϝϥɺσΟεϓϨΠɺεΠονϟʔΛಉ࣠έʔϒϧͰଓ͢Δ 7JEFP4XJUDIFS
কདྷతͳө૾੍࡞ݱͷߏʕཧͷߏ ΧϝϥɺσΟεϓϨΠɺεΠονϟʔͳͲ͋ΒΏΔө૾ػث͕*1ΛΔ -4XJUDI *17JEFP4XJUDIFS -
*17JEFP4XJUDIFS -
কདྷతͳө૾੍࡞ݱͷߏʕࢀߟࣄྫ 7354"/%#09-*7&*1130+&$5 IUUQTBOECPYWSUCFMJWFJQ 7-"/ ϚϧνΩϟετͳͲͷ*1ͳΒͰͷϝϦοτ͕׆͔ͤΔ
ө૾੍࡞ݱʹ͓͚Δ*1ૹஔͷཁ݅
ղ૾ͱϑϨʔϜϨʔτ ϑϧ)%ө૾ͱ,ө૾ͷσʔλϨʔτΛൺֱ͢Δ :$C$SCJU ,ө૾ͷ์ૹϨϕϧͰQͰ͋Δ͜ͱ͕ٻΊΒΕΔ (CQTͷଳҬͰ,QͰͷૹΛߦ͏ͨΊʹɺ:$C$SํࣜͰૹ͢Δ (CQT
(CQT J! Q! (CQT Q! (CQT Q! ഒ ഒ
Ԇͷڐ༰ͷௐࠪʕ֓ཁ ө૾੍࡞ݱʹ͓͍ͯɺͲΕ΄ͲͷԆ͕ڐ༰Ͱ͖Δ͔ͷධՁج४ͱͳΔΛௐࠪͨ͠ ϒϥβ্ͰεΠονϟʔͷϚϧνϏϡʔը໘ʹݟཱͯͨը໘Λग़ྗ͢Δ ͷஈ֊ʹΘ͚ɺ֤ஈ֊ͰΩʔϘʔυͷೖྗ͔Βସ·ͰʙϑϨʔϜͷԆΛ ༩͑ͨ
࣮ݧɺө૾੍࡞ݱͷܦݧ͕͋ΔਓΛରͱͨ͠
Ԇͷڐ༰ͷௐࠪʕඃݧऀͷը໘ D DPQZSJHIU #MFOEFS'PVOEBUJPOXXXCJHCVDLCVOOZPSH
Ԇͷڐ༰ͷௐࠪʕܭଌ݁Ռ Ԇ࣌ؒʢNTʣ ʮڐ༰Ͱ͖Δʯͱ ճͨ͠ਓʢਓʣ ࣮ݧͷ݁Ռͱͯ͠ɺNT ϑϨʔϜ ·ͰʮԆΛڐ༰Ͱ͖Δʯͱճͨ͠ਓ ׂ͕Ҏ্Ͱ͕͋ͬͨɺͦΕҎׂ߱ΛԼճͬͨ
ө૾੍࡞ݱʹ͓͚Δ*1ૹஔͷཁ݅ ͜ΕΒͷௐ͔ࠪΒɺө૾੍࡞ݱʹ͓͚Δ*1ૹஔͷཁ݅ΛҎԼͷΑ͏ʹ·ͱΊΔ ରԠղ૾ ,Y1Q ,YQ :$C$S Ԇ࣌ؒ NTҎ
τϥϑΟοΫ (CQTҎ
ιϑτΣΞʹΑΔ࣮
ιϑτΣΞʹΑΔ࣮ ૹग़༻1$Ͱɺ,ΩϟϓνϟΧʔυ͔ΒΩϟϓνϟ͠ɺ(CQTରԠ/*$Λ௨ͯ͠*1 ύέοτͱͯ͠ө૾σʔλΛૹ৴͠ɺड৴༻1$Ͱɺड৴ͨ͠σʔλΛө૾࠶ੜ༻Ξϓ Ϧέʔγϣϯʹ͠ɺө૾Λग़ྗ͢Δ *1ૹ5$1Ͱߦͬͨ 6%1ʹΑΔॱং੍ޚ࠶ૹ੍ޚͷ࣮ʹׂ͕͚࣌ؒͳ͔ͬͨͨΊ
,ΩϟϓνϟΧʔυ (CQTରԠ/*$ (CQTରԠ/*$
ιϑτΣΞʹΑΔ࣮ʕ࣮ূ࣮ݧ 03'Ͱɺ4'$ͱ౦ژϛουλϯͷLNؒͰ(CQTͷճઢΛ͍ɺ, ө૾ͷதܧΛߦͬͨ 6OMFTTPUIFSXJTFOPUFE UIFUFYUPGBOEJMMVTUSBUJPOTJOUIJTTMJEFBSFMJDFOTFEVOEFSB$SFBUJWF$PNNPOT"UUSJCVUJPO4IBSF"MJLF*OUFSOBUJPOBM-JDFOTFCZ)JSPUBLB/BLBKJNB ,FJP6OJWFSTJUZ4IPOBO'VKJTBXB$BNQVT-PHPJTMJDFOTFECZJUTDPQZSJHIUIPMEFST ,ө૾ૹ࣮ݧͷ༷ 18
ϋʔυΣΞʹΑΔ࣮
ϋʔυΣΞʹΑΔ࣮ 9JMJOY,$ධՁϘʔυɺ)%.*ΠϯλʔϑΣʔεΧʔυΛ༻͍ͨ )%.*ΠϯλʔϑΣʔεΧʔυ͔Βड৴ͨ͠ө૾σʔλΛ*1ύέοτԽ͠ૹ৴ ͠ɺ*1ંΓฦ͠ஔͰંΓฦ͞ΕͨσʔλΛσίʔυ͠ө૾Λग़ྗ͢Δ 9JMJOY,$ධՁϘʔυ ө૾ૹஔʢૹड৴݉༻ʣ 9JMJOY,$ධՁϘʔυ
*1ંΓฦ͠ஔ
ϋʔυΣΞʹΑΔ࣮ʕϓϩτίϧ *1ૹ6%1Ͱߦͬͨ ॱং੍ޚ࠶ૹ੍ޚͷ࣮ߦ͍ͬͯͳ͍͕ɺμʔΫϑΝΠόʔͰͷϋʔυΣΞ ಉ࢜ͷ௨৴ͷͨΊ
'1("ճ࿏શମͷϒϩοΫμΠΞάϥϜ
ϋʔυΣΞʹΑΔ࣮ʕ࣮ূ࣮ݧ 03'ͰɺϋʔυΣΞʹΑΔඇѹॖ,ө૾ͷ*1ૹஔΛσϞలࣔͨ͠
ධՁ
τϥϑΟοΫܭଌʕ֓ཁ ࣮ͨ͠*1ૹஔ͕ཧ௨Γʹύέοτͷૹ৴Λߦ͍ͬͯΔ͔Λ֬ೝ͢ΔͨΊʹɺ (CQTͷωοτϫʔΫΧʔυΛࡌͨ͠-JOVY1$Λ༻͍ͯτϥϑΟοΫΛܭଌͨ͠ ཧతͳඵ͋ͨΓͷө૾σʔλϨʔτɺਨϐΫηϧɺਫฏϐΫηϧɺϐΫηϧ͋ ͨΓͷϏοτɺϑϨʔϜϨʔτΛ༻͍ͯɺ࣍ͷΑ͏ʹٻΊΒΕΔ ೖྗ͢Δө૾σʔλɺ,1ͷ:$C$Sͱͨ͠
ܭଌQSPDOFUEFWΛࢹ͠ɺSSEUPPMΛ͍ूܭ͠ɺάϥϑͱͯ͠ग़ྗͨ͠ 3840 × 2160 × 16 × 30 = 3,981,312,000 = 3.981Gbps ཧతͳ1ඵ͋ͨΓͷө૾σʔλϨʔτ
τϥϑΟοΫܭଌʕιϑτΣΞ࣮ ඵ͋ͨΓͷฏۉड৴Ϩʔτɺ.#QT(CQTͰ͋ͬͨ ཧతͳඵ͋ͨΓͷө૾σʔλϨʔτΛ໌Β͔ʹຬ͍ͨͯ͠ͳ͍
τϥϑΟοΫܭଌʕϋʔυΣΞ࣮ ܭଌ༻1$Ͱυϩοϓ͕ൃੜͯ͠͠·ͬͨ ഁغ͞ΕͨͷؚΊສύέοτૹ৴͍ͯ͠Δ͜ͱ͕Θ͔ͬͨ ड৴ύέοτͱഁغύέοτɺड৴όΠτ͔Βࢉग़ͨ͠ඵ͋ͨΓͷฏۉड৴Ϩʔ τɺ.#QT(CQTͰ͋ͬͨ
ཧతͳඵ͋ͨΓͷө૾σʔλϨʔτͱ΄΅Ұக͢Δ
Ԇܭଌʕ֓ཁ ࣮ͨ͠*1ૹஔ͕ɺཁ݅ʹࣔͨ͠Ԇͷڐ༰ͷൣғͰ͋Δ͔Λݕূ͢ΔͨΊ ʹɺԆΛܭଌ͢ΔڥΛ༻ҙ͠ɺൃੜ͢ΔԆΛܭଌͨ͠ 03'Ͱలࣔͨ͠ιϑτΣΞͷ࣮ʹ͍ͭͯɺಉ͡ܭଌख๏Ͱ࠶ܭଌͨ͠ ιʔε͔Β ରػث͔Β
ಉ͡ө૾ΛରػثΛܦ༝ͨ͠ͷͱܦ༝͍ͯ͠ͳ͍ө૾Λಉ͡ը໘ʹදࣔ͢Δ͜ͱʹ Αͬͯɺ͋ΔॠؒͷԆΛܭଌ͢Δ͜ͱ͕Ͱ͖Δ ܭଌͰ͖ΔཻϑϨʔϜ୯ҐͱͳΔ
Ԇܭଌʕܭଌ෩ܠ ιʔε͔Β ରػث͔Β ιʔε͔Β ରػث͔Β ϋʔυΣΞ ιϑτΣΞ
ԆܭଌʕιϑτΣΞ࣮ ճʹ͚ͯԆΛܭଌͨ͠ ճ ճ ճ ճ ճ ฏۉ
ԆϑϨʔϜ ϑϨʔϜҎ ϑϨʔϜҎ ϑϨʔϜҎ ϑϨʔϜҎ ϑϨʔϜҎ ϑϨʔϜҎ Ԇ࣌ؒ NTҎ NTҎ NTҎ NTҎ NTҎ NTҎ ιϑτΣΞͰɺ࠷ͰΩϟϓνϟʔϘʔυ͔Βө૾Λऔಘ͢ΔͷʹϑϨʔϜɺඳը͢ ΔͷʹϑϨʔϜͷԆ͕ൃੜ͢Δ ܭଌճʹΑͬͯԆϑϨʔϜʹΒ͖͕ͭ͋Δ සൟʹϑϨʔϜམ͕ͪൃੜͨ͠ Ԇ͕૿͑ͳ͍Α͏ʹ͢ΔͨΊɺόοϑΝ͕ཷ·Γ͍͗ͯ͢Δ߹5$1ύέοτΛഁغ͍ͯ͠Δ
ԆܭଌʕϋʔυΣΞ࣮ ճʹ͚ͯԆΛܭଌͨ͠ ճ ճ ճ ճ ճ ฏۉ
ԆϑϨʔϜ ϑϨʔϜҎ ϑϨʔϜҎ ϑϨʔϜҎ ϑϨʔϜҎ ϑϨʔϜҎ ϑϨʔϜҎ Ԇ࣌ؒ NTҎ NTҎ NTҎ NTҎ NTҎ NTҎ શͯϑϨʔϜҎͷԆʹ͑Δ͜ͱ͕ग़དྷͨ શͯͷܭଌͰϑϨʔϜ୯ҐͰͷԆͷΒ͖ͭແ͔ͬͨͨΊɺө૾ͷ࣭ͱͯ҆͠ఆͯ͠ ͍Δ͜ͱ͕Θ͔ͬͨ
ղ૾ ࣮ͨ͠*1ૹஔʹ)%.*Λ༻͍ͨ:$C$Sͷग़ྗʹରԠͨ͠ΧϝϥΛ ଓ͠ɺग़ྗ͕֬ೝͰ͖Δ͔ΛࢹͰ֬ೝͨ͠ :$C$Sͷग़ྗʹରԠ͍ͯ͠ΔΧϝϥͱͯ͠40/:'%3"9Λ༻ͨ͠ 40/:'%3"9 ιϑτΣΞ࣮ ϋʔυΣΞ࣮
,Q ରԠ ରԠ ,Q ϋʔυΣΞ੍ʹΑΓ ݕূͰ͖ͣ ରԠ ݕূ݁Ռ ιϑτΣΞ࣮Ͱɺ,ΩϟϓνϟʔϘʔυͷ੍ʹΑΓQͷૹͷݕূ͕ߦ͑ ͳ͔ͬͨ
·ͱΊ ຊݚڀͰɺ͜Ε͔Βͷ࣌ʹ͓͚ΔʮڌͰͷө૾ͷ*1ૹʯʹඞཁͳཁ݅Λௐࠪ ͠ɺͦΕ͕ιϑτΣΞͱϋʔυΣΞͷ࣮Ͱຬͨ͢͜ͱ͕Ͱ͖Δ͔ݕূΛߦͬͨ ൚༻1$Λ༻͍ͨιϑτΣΞͰɺ,Qͷૹ͕ߦ͑ͨ ͔͠͠ɺԆNTҎͱڐ༰ൣғ֎Ͱ͋ΓɺΒ͖ͭ͋ͬͨ '1("Λ༻͍ͨϋʔυΣΞͰɺ,Qͷૹ͕ߦ͑ͨ
ԆNTҎͱڐ༰ൣғͰ͋Γɺ҆ఆͯ͠ૹ͢Δ͜ͱ͕ग़དྷͨ ͜ΕΒͷ݁Ռ͔ΒɺڌͰͷө૾ͷ*1ૹө૾੍࡞ݱʹ͓͚Δཁ݅Λຬͨ͢͜ͱ ͕Ͱ͖ɺطଘͷૹख๏ʹൺͯ༏ҐͰ͋Δ͜ͱ͕Θ͔ͬͨ ө૾ۀքͰ͋ΒΏΔػث͕ωοτϫʔΫʹ&OEUP&OEͰܨ͕Δ͜ͱͰɺ7-"/Ϛ ϧνΩϟετͳͲ*1ͷϝϦοτΛ׆͔͠ɺө૾੍࡞ݱ͕ΑΓշదʹͳΔ ͪΖΜ*1W3FBEZͰ
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
࣭ٙԠ
ө૾ૹέʔϒϧ 4%* 0QUJDBM ҰൠతͳσʔλϨʔτ (CQT 1BSBMMFM(CQT (CQT (CQT έʔϒϧͷѻ͍͢͞ ॏ͍ɾ҆ఆ͠ͳ͍
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৭ۭؒͱ৭ਂ :67ʮਓؒͷ໌Δ͞ͷมԽʹහײ͕ͩɺ৭ͷมԽʹಷײͰ͋Δʯͱ͍͏ੑ ࣭Λར༻ͨ͠৭ۭؒͰ͋Δ ө૾੍࡞Ͱ:$C$S :67 ͕༻͍ΒΕΔ͜ͱ͕ҰൠతͰ͋Δ
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