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MediaCodecで動画編集をしてみよう
Masayuki Suda
February 08, 2018
Programming
3
3.9k
MediaCodecで動画編集をしてみよう
DroidKaigi 2018でプレゼンさせていただいたスライドです。
Masayuki Suda
February 08, 2018
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Transcript
.FEJB$PEFDͰಈըฤूΛͯ͠ΈΑ͏ %SPJE,BJHJ EBBTVV
ॳొஃʂʂ
ࣗݾհ $$IBOOFMגࣜձࣾ "OESPJE&OHJOFFS݉1. ਢాխ೭ ʮNZTUBʯΤϯλϝಈըΞϓϦ ʮ4PEBʯಈըฤूΞϓϦ .BTBZVLJ4VEB EBBTVV
ࠓͷΰʔϧ "OESPJEΞϓϦΛ࡞ΕΔਓ͕ɺ .FEJB$PEFDͰϑΟϧλʔ͕͔͔ͬͨΓɺ ΥʔλʔϚʔΫΛ͚ͭͨಈըΛ࡞ΕΔͷʹ ඞཁͳٕज़Λཧղ͢Δɻ
.Q$PNQPTFSBOESPJE ɾ؆୯ʹ.QʹϑΟϧλʔΥʔλʔϚʔΫ ɹ͕͚ͭΒΕΔ ɾຊͨ͠༰ͷಈ͘αϯϓϧʹ IUUQTHJUIVCDPN.BTBZVLJ4VEB.Q$PNQPTFSBOESPJE
// ΥʔλʔϚʔΫ new Mp4Composer(srcMp4Path, destMp4Path) .filter( new GlWatermarkFilter(watermarkBitmap, Position.RIGHT_BOTTOM) )
.start(); // ηϐΞϑΟϧλʔ new Mp4Composer(srcMp4Path, destMp4Path) .filter(new GlSepiaFilter()) .start(); .Q$PNQPTFSBOESPJE IUUQTHJUIVCDPN.BTBZVLJ4VEB.Q$PNQPTFSBOESPJE
࣍ ᶃಈըͱ ᶄಈըฤूͷجૅࣝ ᶅ.FEJB$PEFDͷϙΠϯτ ᶆ0QFO(-&4ͷϙΠϯτ ᶇಈըʹϑΟϧλʔΛ͔͚Δ ᶈಈըʹΥʔλʔϚʔΫΛ͚ͭΔ ᶉ࠷ޙʹ
ಈըͱԻʴө૾ ᶃಈըͱ ը૾ग़యɹ"WJ6UJMͷқ͍͍͠ํ ɹIUUQBWJVUMJOGPEPVHBLFJTJLJLPOOUFOB
ө૾ͱը૾ͷू߹ମ ը૾ग़యɹ"WJ6UJMͷқ͍͍͠ํ ɹIUUQBWJVUMJOGPEPVHBLFJTJLJLPOOUFOB ᶃಈըͱ
࣍ ᶃಈըͱ ᶄಈըฤूͷجૅࣝ ᶅ.FEJB$PEFDͷϙΠϯτ ᶆ0QFO(-&4ͷϙΠϯτ ᶇಈըʹϑΟϧλʔΛ͔͚Δ ᶈಈըʹΥʔλʔϚʔΫΛ͚ͭΔ ᶉ࠷ޙʹ
ᶄಈըฤूͷجૅࣝ ಈըฤूͰ͓͍͑ͨ͞༻ޠͭ ᶃ&ODPEF ᶄ$PEFD ɹ ᶅ%FDPEF ᶆ.VYFS
ɾѹॖΛͯ͠ɺಈըϑΝΠϧΛখ͘͢͞Δߦҝɻ ɾө૾ը૾ͷू߹ମɻGQTͰͷಈըͩͱ ຕͷը૾ʹͳΔɻ୯७ʹͦͷ··ॲཧΛ ͯ͠͠·͏ͱɺେͳ༰ྔʹͳͬͯ͠·͏ɻ ͦΕΛ͙ ಈըฤूͰͷ༻ޠͭ ᶃ&ODPEF ᶄಈըฤूͷجૅࣝ
ᶄ$PEFD ɾ&ODPEF ѹॖ ͢ΔࡍͷΞϧΰϦζϜ ɾ).1&("7$ͷ͜ͱΛࢦ͢ ɾ"OESPJEҎ߱ɺ.FEJB$PEFD) ɹʹ΄΅શରԠ ಈըฤूͰͷ༻ޠͭ ᶄಈըฤूͷجૅࣝ
ಈըฤूͰͷ༻ޠ ᶅ%FDPEF ɾ&ODPEF ѹॖ ͞ΕͨಈըΛ෮ݩ͢Δߦҝ ɾಈը࠶ੜಈըϑΝΠϧΛ%FDPEFΛ ɹ͞Εͯ࠶ੜ͞Ε͍ͯΔ ᶄಈըฤूͷجૅࣝ
ಈըฤूͰͷ༻ޠ ᶆ.VYFS ɾΤϯίʔυͨ͠ʮө૾ʯͱʮԻʯΛͭͷ ɹಈըϑΝΠϧͱͯ͠·ͱΊΔ ᶄಈըฤूͷجૅࣝ
ɾಈըΛ%FDPEF͢Δɺը૾ʹల։͢Δɻ ɹˣ ɾల։ͨ͠ը૾ʹϑΟϧλʔΛ͔͚Δ ɹˣ ɾฤूͨ͠ը૾Λ&ODPEF ѹॖ ͯ͠ө૾ʹ͢Δ ɹˣ ɾ&ODPEFͨ͠ө૾ͱԻΛಈըϑΝΠϧʹ͢Δ ɹ
.VYFS ಈըʹϑΟϧλʔΛ͔͚ΔTUFQ ᶄಈըฤूͷجૅࣝ
࣍ ᶃಈըͱ ᶄಈըฤूͷجૅࣝ ᶅ.FEJB$PEFDͷϙΠϯτ ᶆ0QFO(-&4ͷϙΠϯτ ᶇಈըʹϑΟϧλʔΛ͔͚Δ ᶈಈըʹΥʔλʔϚʔΫΛ͚ͭΔ ᶉ࠷ޙʹ
ᶃ.FEJB&YUSBDUPSͰը૾Λ̍ຕ̍ຕऔΓग़͢ ᶄ.FEJB&YUSBDUPS͔Βड͚औͬͨσʔλΛ%FDPEFSͰ4VSGBDF5FYUVSF ʹ͠ɺͦ͜ʹϑΟϧλʔΛ͔͚Δɻ&ODPEFSͰ༻ҙͨ͠(-$POUFYUʹඳըɻ ᶅ.FEJB.VYFSͰ.1ϑΝΠϧʹ͢Δɻ ᶅ.FEJB$PEFDͷϙΠϯτ ը૾࡞ࢀߟݩɹ "OESPJEͰ.FEJB$PEFDΛ͍''NQFHͳ͠ͰಈըΛѹॖ͢Δํ๏ʢϥΠϒϥϦ͋Γʣɹ IUUQTRJJUBDPNZVZB@QSFTUPJUFNTEFDCE .1 .FEJB
&YUSBDUPS .FEJB$PEFD %FDPEFS 0QFO(-&4$POUFYU 'JMUFS %FDPEFS4VSGBDF &ODPEFS4VSGBDF .FEJB$PEFD &ODPEFS .FEJB .VYFS .1 4VSGBDF5FYUVSF 4XBQ#V⒎FS ESBX #ZUF#V⒎FS #ZUF#V⒎FS .Q$PNQPTFSͷΞʔΩςΫνϟ
ᶅ.FEJB$PEFDͷϙΠϯτ ͭͷओཁ$MBTTΛΈ߹ΘͤͯಈըฤूΛߦ͏ ɾ.FEJB&YUSBDUPS ɾ.FEJB$PEFD ɾ.FEJB.VYFS
ᶅ.FEJB$PEFDͷϙΠϯτ ɾ.FEJB&YUSBDUPS ɹׂͱͯ͠%FDPEFͷҰ෦Λ୲͏ɻ ɹ ɹฤूݩͷಈը͔ΒԻσʔλͱө૾ຕຕΛ#ZUF#V⒎FS Ͱ.FEJB$PEFDʹ͢ɻ ɹ.FEJB$PEFDͰѻ͑ΔҰ୯Ґ TBNQMF ͣͭ͠·͢ɻ
ᶅ.FEJB$PEFDͷϙΠϯτ ɾ.FEJB$PEFD ɹׂͱͯ͠%FDPEFͷҰ෦ͱ&ODPEFΛ୲͏ ɹ%FDPEFͱ&ODPEFͦΕͧΕผͷΠϯελϯεͰ୲͏ɻ ɹ ɹ.FEJB&YUSBDUPS͔Βड͚औͬͨ#ZUF#V⒎FSΛ ɹ%FDPEF͢ΔΠϯελϯεͰडऔɺ0QFO(-&4 5FYUVSF 4VSGBDF5FYUVSF ͱͯ͠ల։͢Δɻ
ɹ&ODPEF͢ΔΠϯελϯεͰ༻ҙͨ͠(-$POUFYUͰ ɹ5FYUVSFΛඳը͢Δɻ
ᶅ.FEJB$PEFDͷϙΠϯτ ɾ.FEJB.VYFS .FEJB$PEFD͔Βฤू͞ΕͨԻɺө૾Λ#ZUF#V⒎FSͰ ɹडऔɺҰͭͷϑΝΠϧίϯςφΛੜ͢Δɻ ɹ
.FEJB&YUSBDUPSͷ େࡶͳίʔυͷྲྀΕ // Πϯελϯεੜ mediaExtractor = new MediaExtractor(); // ಈըฤूݩͷϑΝΠϧΛFileDescriptorܗࣜͰηοτ͢Δɻ
mediaExtractor.setDataSource(inputFileDescriptor); // Decoder(MediaCodec)ͷ࡞ MediaFormat inputFormat = mediaExtractor.getTrackFormat(trackIndex); decoder = MediaCodec.createDecoderByType(inputFormat.getString(MediaFormat.KEY_MIME)); // Decoderʹ͢ByteBufferΛ࡞ decoderInputBuffers = decoder.getInputBuffers(); // sample (MediaCodecͰѻ͑Δ1୯Ґ)ͷαΠζΛऔಘ int result = decoder.dequeueInputBuffer(0); int sampleSize = mediaExtractor.readSampleData(decoderInputBuffers[result], 0); // DecoderʹDataΛ͢ boolean isKeyFrame = (mediaExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0; decoder.queueInputBuffer(result, 0, sampleSize, mediaExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0); // ࣍ͷsampleσʔλʹਐΉ mediaExtractor.advance(); ᶅ.FEJB$PEFDͷϙΠϯτ
// MediaExtractor͔ΒडऔɺॲཧࡁΈͷOutput BufferΛऔಘ int result = decoder.dequeueOutputBuffer(bufferInfo, 0); // 2ͭΊͷҾSurfaceʹtextureΛඳը͢Δ͔Ͳ͏͔
decoder.releaseOutputBuffer(result, true); // ඳը͞Εͨtextureͷ౸ணͪ decoderSurface.awaitNewImage(); // textureΛOpenGLͰඳը decoderSurface.drawImage(); // ඳը͞ΕΔ࣌ؒΛࢦఆ encoderSurface.setPresentationTime(bufferInfo.presentationTimeUs * 1000); // ݱࡏඳը͞Ε͍ͯΔ༰ΛEncoderʹૹ৴ encoderSurface.swapBuffers(); // encoderͰඳըใΛडऔΔ encoder.dequeueOutputBuffer(bufferInfo, 0); encoderOutputBuffers = encoder.getOutputBuffers(); // encoderͷoutputBufferΛMediaMuxerʹͯ͠ɺmp4ϑΝΠϧʹ͢Δ muxRender.writeSampleData(MuxRender.SampleType.VIDEO, encoderOutputBuffers[result], bufferInfo); ᶅ.FEJB$PEFDͷϙΠϯτ .FEJB$PEFDɹ.FEJB.VYFSͷ େࡶͳίʔυͷྲྀΕ
࣍ ᶃಈըͱ ᶄಈըฤूͷجૅࣝ ᶅ.FEJB$PEFDͷϙΠϯτ ᶆ0QFO(-&4ͷϙΠϯτ ᶇಈըʹϑΟϧλʔΛ͔͚Δ ᶈಈըʹΥʔλʔϚʔΫΛ͚ͭΔ ᶉ࠷ޙʹ
.1 .FEJB &YUSBDUPS .FEJB$PEFD %FDPEFS 0QFO(-&4$POUFYU 'JMUFS %FDPEFS4VSGBDF &ODPEFS4VSGBDF .FEJB$PEFD
&ODPEFS .FEJB .VYFS .1 4VSGBDF5FYUVSF 4XBQ#V⒎FS ESBX #ZUF#V⒎FS #ZUF#V⒎FS ᶆ0QFO(-&4ͷϙΠϯτ
ᶆ0QFO(-&4ͷϙΠϯτ ɾ0QFO(-&4ͱɺ0QFO(-ͷܞଳ͚ͷαϒηοτ൛ɻ ,ISPOPT(SPVQ͕༷ࡦఆ ɾ(16ͷ֤ԋࢉϢχοτશ͘ಉ͡ϓϩάϥϜΛҟͳΔσʔλ ʹରͯ͠ฒྻ࣮ߦ͠·͢ɻ ɾෳࡶͳӄӨॲཧඳըΤϑΣΫτͷࡍɺ(16ͷࢧԉʹΑͬͯ ɹ࣮ߦ͍ͯͨ͘͠ΊɺϚϧνίΞ$16ΑΓ༏Εͨ ɹύϑΥʔϚϯεΛൃش
ᶆ0QFO(-&4ͷϙΠϯτ ϑΟϧλʔΛ͔͚ΔશͯͷϐΫηϧʹॲཧΛՃ͑Δ
ᶆ0QFO(-&4ͷϙΠϯτ ը૾ग़యɹϚΠφϏχϡʔε %άϥϑΟοΫɾϚχΞοΫε ɹIUUQTOFXTNZOBWJKQBSUJDMFHSBQIJDT 0QFO(-&4Ͱͷඳը·ͰͷྲྀΕ ใΛ༻ҙ %σΟεϓϨΠͷͲ͜ʹඳը͢ΔҐஔͷܾఆ ֤ϐΫηϧຖͷ৭Λܾఆ
ᶆ0QFO(-&4ͷϙΠϯτ 0QFO(-&4Ͱͷඳը·ͰͷྲྀΕ ใΛ༻ҙ private final float[] triangleVerticesData = { //
X, Y, Z, U, V -1.0f, -1.0f, 0, 0.f, 0.f, 1.0f, -1.0f, 0, 1.f, 0.f, -1.0f, 1.0f, 0, 0.f, 1.f, 1.0f, 1.0f, 0, 1.f, 1.f, };
(-1,1,0) +y +x (1,1,0) (1,-1,0) (-1,-1,0) +z (0,0) (1,0) (0,1)
67࠲ඪ ࠲ඪ ᶆ0QFO(-&4ͷϙΠϯτ 0QFO(-&4Ͱͷඳը·ͰͷྲྀΕ ใΛ༻ҙ ը૾࡞ࢀߟݩɹ ͚Μ͝ͷ͓ෑɹςΫενϟϚοϐϯά IUUQULFOHPHJUIVCJPCMPHPQFOHMFTELOPXMFEHF
ᶆ0QFO(-&4ͷϙΠϯτ 7FSUFY4IBEFSͰߦ͏ 0QFO(-&4Ͱͷඳը·ͰͷྲྀΕ %σΟεϓϨΠͷͲ͜ʹඳը͢ΔҐஔͷܾఆ
7FSUFY4IBEFS VOJGPSNNBUV.71.BUSJY֦େճసͳͲͷม࠲ඪ VOJGPSNNBUV45.BUSJYσίʔυͨ͠ςΫενϟͷߦྻ BUUSJCVUFWFDB1PTJUJPOY Z [ͷ࠲ඪ BUUSJCVUFWFDB5FYUVSF$PPSEV W࠲ඪ WBSZJOHWFDW5FYUVSF$PPSE'SBHNFOU4IBEFSʹ͢࠲ඪ WPJENBJO
\ HM@1PTJUJPOV.71.BUSJY B1PTJUJPO W5FYUVSF$PPSE V45.BUSJY B5FYUVSF$PPSE YZ ^ ᶆ0QFO(-&4ͷϙΠϯτ ɾมߦྻͱ࠲ඪΛܭࢉ͠ɺҐஔΛܾఆ ɾςΫενϟͷ67࠲ඪͷܾఆΛ'SBHNFOU4IBEFS͢
ᶆ0QFO(-&4ͷϙΠϯτ มߦྻͱ ը૾ग़య͚Μ͝ͷ͓ෑɹ όʔςοΫεγΣʔμʹΑΔ࠲ඪܥมɹ IUUQULFOHPHJUIVCJPCMPHPQFOHMFTELOPXMFEHF
ᶆ0QFO(-&4ͷϙΠϯτ มߦྻͱ private float[] MVPMatrix = new float[16]; // ୯Ґߦྻͷੜ
Matrix.setIdentityM(MVPMatrix, 0); // ฒߦҠಈ Matrix.translateM(MVPMatrix, 0, x:0, y:0, z:0f); // ֦େɾॖখ Matrix.scaleM(MVPMatrix, 0, x:1, y:1, z:1); // ճస Matrix.rotateM(MVPMatrix, 0, rotation:0, x:0.f, y:0.f, z:1.f);
ᶆ0QFO(-&4ͷϙΠϯτ 'SBHNFOU4IBEFS ৭Λมߋ͢ΔϑΟϧλʔɺΥʔλʔϚʔΫ ͜͜Ͱͷॲཧ͢Δ͕伴ʹͳΔɻ ֤ϐΫηϧຖͷ৭Λܾఆ 0QFO(-&4Ͱͷඳը·ͰͷྲྀΕ
'SBHNFOU4IBEFS FYUFOTJPO(-@0&4@&(-@JNBHF@FYUFSOBMSFRVJSF QSFDJTJPONFEJVNQqPBU WBSZJOHWFDW5FYUVSF$PPSEWFSUFYTIBEFS VOJGPSNTBNQMFS&YUFSOBM0&4T5FYUVSFಈը͔Βσίʔυ͞Εͨը૾ WPJENBJO \ HM@'SBH$PMPSUFYUVSF% T5FYUVSF W5FYUVSF$PPSE
^ ᶆ0QFO(-&4ͷϙΠϯτ ɾ͖ͬͯͨ67࠲ඪʹ5FYUVSF͔Β5FYFMΛऔΓग़͠ɺ ɹϥελϥΠζิ͞Εͨ৭Λඳը͢Δ
ᶆ0QFO(-&4ͷϙΠϯτ ใΛ৭ใʹ͢ڮ͠ɻ ҙࣝ͠ͳͯ͘ϓϩάϥϛϯάͰ͖Δɻ ϥελϥΠζ ը૾ग़యɹϚΠφϏχϡʔε %άϥϑΟοΫɾϚχΞοΫε ɹIUUQTOFXTNZOBWJKQBSUJDMFHSBQIJDT 0QFO(-&4Ͱͷඳը·ͰͷྲྀΕ
.1 .FEJB &YUSBDUPS .FEJB$PEFD %FDPEFS 0QFO(-&4$POUFYU 'JMUFS %FDPEFS4VSGBDF &ODPEFS4VSGBDF .FEJB$PEFD
&ODPEFS .FEJB .VYFS .1 4VSGBDF5FYUVSF 4XBQ#V⒎FS ESBX #ZUF#V⒎FS #ZUF#V⒎FS ᶆ0QFO(-&4ͷϙΠϯτ ᶃ%FDPEFS4VSGBDFͰ4VSGBDF5FYUVSFͱͯ͠ը૾Λड͚औΔɻ 4DBMFճస༻ͷมߦྻΛཧɻ ᶄ'JMUFSͰ4VSGBDF5FYUVSFʹ৭Λ͚ͭͨΓɺΥʔλʔϚʔΫΛ͚ͭͨΓ͢Δ ᶅ&ODPEFS4VSGBDFͰ.FEJB$PEFDͷ&ODPEFʹॻ͖ࠐΈΛߦ͏
// ඳը͞Εͨtextureͷ౸ணͪ decoderSurface.awaitNewImage(); // textureΛOpenGLͰඳը ෦ͰFilter͕drawΛߦͬͯ·͢ɻ decoderSurface.drawImage(); // ඳը͞ΕΔ࣌ؒΛࢦఆ encoderSurface.setPresentationTime(bufferInfo.presentationTimeUs
* 1000); // ݱࡏඳը͞Ε͍ͯΔ༰ΛEncoderʹૹ৴ encoderSurface.swapBuffers(); // encoderͰඳըใΛडऔΔ encoder.dequeueOutputBuffer(bufferInfo, 0); encoderOutputBuffers = encoder.getOutputBuffers(); // encoderͷoutputBufferΛMediaMuxerʹͯ͠ɺmp4ϑΝΠϧʹ͢Δ muxRender.writeSampleData(MuxRender.SampleType.VIDEO, encoderOutputBuffers[result], bufferInfo); ᶆ0QFO(-&4ͷϙΠϯτ %FDPEFS4VSGBDFͱ&ODPEFS 4VSGBDFͷେࡶͳίʔυͷྲྀΕ
4VSGBDF5FYUVSFͱ ᶆ0QFO(-&4ͷϙΠϯτ ɾ%FDPEF͞Εͨը૾Λ0QFO(-&4ςΫενϟ ɹͱͯ͠ϑϨʔϜΛΩϟϓνϟ͠·͢ɻ ɾ"OESPJEͷ4VSGBDF5FYUVSF%ςΫενϟͰͳ͍ ɾΧϝϥϓϨϏϡʔͷετϦʔϜͰ༻͞Ε͍ͯΔ
࣍ ᶃಈըͱ ᶄಈըฤूͷجૅࣝ ᶅ.FEJB$PEFDͷϙΠϯτ ᶆ0QFO(-&4ͷϙΠϯτ ᶇಈըʹϑΟϧλʔΛ͔͚Δ ᶈಈըʹΥʔλʔϚʔΫΛ͚ͭΔ ᶉ࠷ޙʹ
ᶇಈըʹϑΟϧλʔΛ͔͚Δ ಈըʹϑΟϧλʔΛ͔͚Δ ˣ QJYFM͝ͱͷ৭Λ'SBHNFOU4IBEFSͰมߋ͢Δ
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WPJENBJO \ qPBUMVNJOBODFEPU UFYUVSF% T5FYUVSF W5FYUVSF$PPSE SHC XFJHIU HM@'SBH$PMPSWFD WFD MVNJOBODF ^ ᶇಈըʹϑΟϧλʔΛ͔͚Δ
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HM@'SBH$PMPSSEPU GSBH$PMPSSHC WFD HM@'SBH$PMPSHEPU GSBH$PMPSSHC WFD HM@'SBH$PMPSCEPU GSBH$PMPSSHC WFD ^ ᶇಈըʹϑΟϧλʔΛ͔͚Δ
࣍ ᶃಈըͱ ᶄಈըฤूͷجૅࣝ ᶅ.FEJB$PEFDͷϙΠϯτ ᶆ0QFO(-&4ͷϙΠϯτ ᶇಈըʹϑΟϧλʔΛ͔͚Δ ᶈಈըʹΥʔλʔϚʔΫΛ͚ͭΔ ᶉ࠷ޙʹ
ᶈಈըʹΥʔλʔϚʔΫΛ͚ͭΔ ɾΥʔλʔϚʔΫͷ#JUNBQΛ0QFO(-ʹૹΔ ɾ'SBHNFOU4IBEFSͰBMQIB߹Λߦ͏
ᶈಈըʹΥʔλʔϚʔΫΛ͚ͭΔ #JUNBQΛ0QFO(-ʹૹΔ ը૾ग़య͚Μ͝ͷ͓ෑɹ ςΫενϟϚοϐϯάɹ IUUQULFOHPHJUIVCJPCMPHPQFOHMFTELOPXMFEHF
ᶈಈըʹΥʔλʔϚʔΫΛ͚ͭΔ ը૾ग़య͚Μ͝ͷ͓ෑɹ ςΫενϟϚοϐϯάɹ IUUQULFOHPHJUIVCJPCMPHPQFOHMFTELOPXMFEHF
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ɹIUUQULFOHPHJUIVCJPCMPHPQFOHMFTELOPXMFEHF ɾϚΠφϏχϡʔεɹ%άϥϑΟοΫεͷ֓೦ͱϨϯμϦϯάύΠϓϥΠϯ ɹIUUQTOFXTNZOBWJKQBSUJDMFHSBQIJDT
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