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- FFmpeg maintainers
- ==================
-
- Below is a list of the people maintaining different parts of the
- FFmpeg code.
-
- Please try to keep entries where you are the maintainer up to date!
-
- Names in () mean that the maintainer currently has no time to maintain the code.
- A (CC <address>) after the name means that the maintainer prefers to be CC-ed on
- patches and related discussions.
-
-
- Project Leader
- ==============
-
- Michael Niedermayer
- final design decisions
-
-
- Applications
- ============
-
- ffmpeg:
- ffmpeg.c Michael Niedermayer
-
- ffplay:
- ffplay.c Marton Balint
-
- ffprobe:
- ffprobe.c Stefano Sabatini
-
- ffserver:
- ffserver.c Reynaldo H. Verdejo Pinochet
-
- Commandline utility code:
- cmdutils.c, cmdutils.h Michael Niedermayer
-
- QuickTime faststart:
- tools/qt-faststart.c Baptiste Coudurier
-
-
- Miscellaneous Areas
- ===================
-
- documentation Stefano Sabatini, Mike Melanson, Timothy Gu
- build system (configure, makefiles) Diego Biurrun, Mans Rullgard
- project server Árpád Gereöffy, Michael Niedermayer, Reimar Doeffinger, Alexander Strasser, Lou Logan
- presets Robert Swain
- metadata subsystem Aurelien Jacobs
- release management Michael Niedermayer
-
-
- Communication
- =============
-
- website Deby Barbara Lepage
- fate.ffmpeg.org Timothy Gu
- Trac bug tracker Alexander Strasser, Michael Niedermayer, Carl Eugen Hoyos, Lou Logan
- mailing lists Michael Niedermayer, Baptiste Coudurier, Lou Logan
- Google+ Paul B Mahol, Michael Niedermayer, Alexander Strasser
- Twitter Lou Logan, Reynaldo H. Verdejo Pinochet
- Launchpad Timothy Gu
-
-
- libavutil
- =========
-
- External Interfaces:
- libavutil/avutil.h Michael Niedermayer
- Internal Interfaces:
- libavutil/common.h Michael Niedermayer
-
- Other:
- bprint Nicolas George
- bswap.h
- des Reimar Doeffinger
- dynarray.h Nicolas George
- eval.c, eval.h Michael Niedermayer
- float_dsp Loren Merritt
- hash Reimar Doeffinger
- intfloat* Michael Niedermayer
- integer.c, integer.h Michael Niedermayer
- lzo Reimar Doeffinger
- mathematics.c, mathematics.h Michael Niedermayer
- mem.c, mem.h Michael Niedermayer
- opencl.c, opencl.h Wei Gao
- opt.c, opt.h Michael Niedermayer
- rational.c, rational.h Michael Niedermayer
- rc4 Reimar Doeffinger
- ripemd.c, ripemd.h James Almer
- timecode Clément Bœsch
-
-
- libavcodec
- ==========
-
- Generic Parts:
- External Interfaces:
- avcodec.h Michael Niedermayer
- utility code:
- utils.c Michael Niedermayer
- audio and video frame extraction:
- parser.c Michael Niedermayer
- bitstream reading:
- bitstream.c, bitstream.h Michael Niedermayer
- CABAC:
- cabac.h, cabac.c Michael Niedermayer
- codec names:
- codec_names.sh Nicolas George
- DSP utilities:
- dsputils.c, dsputils.h Michael Niedermayer
- entropy coding:
- rangecoder.c, rangecoder.h Michael Niedermayer
- lzw.* Michael Niedermayer
- floating point AAN DCT:
- faandct.c, faandct.h Michael Niedermayer
- Golomb coding:
- golomb.c, golomb.h Michael Niedermayer
- LPC:
- lpc.c, lpc.h Justin Ruggles
- motion estimation:
- motion* Michael Niedermayer
- rate control:
- ratecontrol.c Michael Niedermayer
- libxvid_rc.c Michael Niedermayer
- simple IDCT:
- simple_idct.c, simple_idct.h Michael Niedermayer
- postprocessing:
- libpostproc/* Michael Niedermayer
- table generation:
- tableprint.c, tableprint.h Reimar Doeffinger
- fixed point FFT:
- fft* Zeljko Lukac
- Text Subtitles Clément Bœsch
-
- Codecs:
- 4xm.c Michael Niedermayer
- 8bps.c Roberto Togni
- 8svx.c Jaikrishnan Menon
- aasc.c Kostya Shishkov
- ac3* Justin Ruggles
- alacenc.c Jaikrishnan Menon
- alsdec.c Thilo Borgmann
- apedec.c Kostya Shishkov
- ass* Aurelien Jacobs
- asv* Michael Niedermayer
- atrac3* Benjamin Larsson
- atrac3plus* Maxim Poliakovski
- bgmc.c, bgmc.h Thilo Borgmann
- bink.c Kostya Shishkov
- binkaudio.c Peter Ross
- bmp.c Mans Rullgard, Kostya Shishkov
- cavs* Stefan Gehrer
- cdxl.c Paul B Mahol
- celp_filters.* Vitor Sessak
- cinepak.c Roberto Togni
- cinepakenc.c Rl / Aetey G.T. AB
- ccaption_dec.c Anshul Maheshwari
- cljr Alex Beregszaszi
- cllc.c Derek Buitenhuis
- cook.c, cookdata.h Benjamin Larsson
- cpia.c Stephan Hilb
- crystalhd.c Philip Langdale
- cscd.c Reimar Doeffinger
- dca.c Kostya Shishkov, Benjamin Larsson
- dnxhd* Baptiste Coudurier
- dpcm.c Mike Melanson
- dss_sp.c Oleksij Rempel, Michael Niedermayer
- dv.c Roman Shaposhnik
- dvbsubdec.c Anshul Maheshwari
- dxa.c Kostya Shishkov
- eacmv*, eaidct*, eat* Peter Ross
- exif.c, exif.h Thilo Borgmann
- ffv1* Michael Niedermayer
- ffwavesynth.c Nicolas George
- fic.c Derek Buitenhuis
- flac* Justin Ruggles
- flashsv* Benjamin Larsson
- flicvideo.c Mike Melanson
- g722.c Martin Storsjo
- g726.c Roman Shaposhnik
- gifdec.c Baptiste Coudurier
- h261* Michael Niedermayer
- h263* Michael Niedermayer
- h264* Loren Merritt, Michael Niedermayer
- huffyuv* Michael Niedermayer, Christophe Gisquet
- idcinvideo.c Mike Melanson
- imc* Benjamin Larsson
- indeo2* Kostya Shishkov
- indeo5* Kostya Shishkov
- interplayvideo.c Mike Melanson
- ivi* Kostya Shishkov
- jacosub* Clément Bœsch
- jpeg2000* Nicolas Bertrand
- jpeg_ls.c Kostya Shishkov
- jvdec.c Peter Ross
- kmvc.c Kostya Shishkov
- lcl*.c Roberto Togni, Reimar Doeffinger
- libcelt_dec.c Nicolas George
- libdirac* David Conrad
- libgsm.c Michel Bardiaux
- libopenjpeg.c Jaikrishnan Menon
- libopenjpegenc.c Michael Bradshaw
- libschroedinger* David Conrad
- libspeexdec.c Justin Ruggles
- libtheoraenc.c David Conrad
- libutvideo* Derek Buitenhuis
- libvorbis.c David Conrad
- libvpx* James Zern
- libx264.c Mans Rullgard, Jason Garrett-Glaser
- libx265.c Derek Buitenhuis
- libxavs.c Stefan Gehrer
- libzvbi-teletextdec.c Marton Balint
- loco.c Kostya Shishkov
- lzo.h, lzo.c Reimar Doeffinger
- mdec.c Michael Niedermayer
- mimic.c Ramiro Polla
- mjpeg*.c Michael Niedermayer
- mlp* Ramiro Polla
- mmvideo.c Peter Ross
- mpc* Kostya Shishkov
- mpeg12.c, mpeg12data.h Michael Niedermayer
- mpegvideo.c, mpegvideo.h Michael Niedermayer
- mqc* Nicolas Bertrand
- msmpeg4.c, msmpeg4data.h Michael Niedermayer
- msrle.c Mike Melanson
- msvideo1.c Mike Melanson
- nellymoserdec.c Benjamin Larsson
- nuv.c Reimar Doeffinger
- nvenc.c Timo Rothenpieler
- paf.* Paul B Mahol
- pcx.c Ivo van Poorten
- pgssubdec.c Reimar Doeffinger
- ptx.c Ivo van Poorten
- qcelp* Reynaldo H. Verdejo Pinochet
- qdm2.c, qdm2data.h Roberto Togni, Benjamin Larsson
- qdrw.c Kostya Shishkov
- qpeg.c Kostya Shishkov
- qtrle.c Mike Melanson
- ra144.c, ra144.h, ra288.c, ra288.h Roberto Togni
- resample2.c Michael Niedermayer
- rl2.c Sascha Sommer
- rpza.c Roberto Togni
- rtjpeg.c, rtjpeg.h Reimar Doeffinger
- rv10.c Michael Niedermayer
- rv3* Kostya Shishkov
- rv4* Kostya Shishkov, Christophe Gisquet
- s3tc* Ivo van Poorten
- smacker.c Kostya Shishkov
- smc.c Mike Melanson
- smvjpegdec.c Ash Hughes
- snow* Michael Niedermayer, Loren Merritt
- sonic.c Alex Beregszaszi
- srt* Aurelien Jacobs
- sunrast.c Ivo van Poorten
- svq3.c Michael Niedermayer
- tak* Paul B Mahol
- targa.c Kostya Shishkov
- tiff.c Kostya Shishkov
- truemotion1* Mike Melanson
- truemotion2* Kostya Shishkov
- truespeech.c Kostya Shishkov
- tscc.c Kostya Shishkov
- tta.c Alex Beregszaszi, Jaikrishnan Menon
- ttaenc.c Paul B Mahol
- txd.c Ivo van Poorten
- ulti* Kostya Shishkov
- v410*.c Derek Buitenhuis
- vb.c Kostya Shishkov
- vble.c Derek Buitenhuis
- vc1* Kostya Shishkov, Christophe Gisquet
- vcr1.c Michael Niedermayer
- vda_h264_dec.c Xidorn Quan
- vima.c Paul B Mahol
- vmnc.c Kostya Shishkov
- vorbisdec.c Denes Balatoni, David Conrad
- vorbisenc.c Oded Shimon
- vp3* Mike Melanson
- vp5 Aurelien Jacobs
- vp6 Aurelien Jacobs
- vp8 David Conrad, Jason Garrett-Glaser, Ronald Bultje
- vp9 Ronald Bultje, Clément Bœsch
- vqavideo.c Mike Melanson
- wavpack.c Kostya Shishkov
- wmaprodec.c Sascha Sommer
- wmavoice.c Ronald S. Bultje
- wmv2.c Michael Niedermayer
- wnv1.c Kostya Shishkov
- xan.c Mike Melanson
- xbm* Paul B Mahol
- xface Stefano Sabatini
- xl.c Kostya Shishkov
- xvmc.c Ivan Kalvachev
- xwd* Paul B Mahol
- zerocodec.c Derek Buitenhuis
- zmbv* Kostya Shishkov
-
- Hardware acceleration:
- crystalhd.c Philip Langdale
- dxva2* Laurent Aimar
- libstagefright.cpp Mohamed Naufal
- vaapi* Gwenole Beauchesne
- vda* Sebastien Zwickert
- vdpau* Carl Eugen Hoyos
-
-
- libavdevice
- ===========
- External Interface:
- libavdevice/avdevice.h
-
-
- avfoundation.m Thilo Borgmann
- decklink* Deti Fliegl
- dshow.c Roger Pack (CC rogerdpack@gmail.com)
- fbdev_enc.c Lukasz Marek
- gdigrab.c Roger Pack (CC rogerdpack@gmail.com)
- iec61883.c Georg Lippitsch
- lavfi Stefano Sabatini
- libdc1394.c Roman Shaposhnik
- opengl_enc.c Lukasz Marek
- pulse_audio_enc.c Lukasz Marek
- qtkit.m Thilo Borgmann
- sdl Stefano Sabatini
- v4l2.c Giorgio Vazzana
- vfwcap.c Ramiro Polla
- xv.c Lukasz Marek
-
- libavfilter
- ===========
-
- Generic parts:
- graphdump.c Nicolas George
-
- Filters:
- af_adelay.c Paul B Mahol
- af_aecho.c Paul B Mahol
- af_afade.c Paul B Mahol
- af_amerge.c Nicolas George
- af_aphaser.c Paul B Mahol
- af_aresample.c Michael Niedermayer
- af_astats.c Paul B Mahol
- af_astreamsync.c Nicolas George
- af_atempo.c Pavel Koshevoy
- af_biquads.c Paul B Mahol
- af_compand.c Paul B Mahol
- af_ladspa.c Paul B Mahol
- af_pan.c Nicolas George
- af_silenceremove.c Paul B Mahol
- avf_avectorscope.c Paul B Mahol
- avf_showcqt.c Muhammad Faiz
- vf_blend.c Paul B Mahol
- vf_colorbalance.c Paul B Mahol
- vf_colorkey.c Timo Rothenpieler
- vf_dejudder.c Nicholas Robbins
- vf_delogo.c Jean Delvare (CC <khali@linux-fr.org>)
- vf_drawbox.c/drawgrid Andrey Utkin
- vf_extractplanes.c Paul B Mahol
- vf_histogram.c Paul B Mahol
- vf_hqx.c Clément Bœsch
- vf_idet.c Pascal Massimino
- vf_il.c Paul B Mahol
- vf_lenscorrection.c Daniel Oberhoff
- vf_mergeplanes.c Paul B Mahol
- vf_psnr.c Paul B Mahol
- vf_scale.c Michael Niedermayer
- vf_separatefields.c Paul B Mahol
- vf_stereo3d.c Paul B Mahol
- vf_telecine.c Paul B Mahol
- vf_yadif.c Michael Niedermayer
-
- Sources:
- vsrc_mandelbrot.c Michael Niedermayer
-
- libavformat
- ===========
-
- Generic parts:
- External Interface:
- libavformat/avformat.h Michael Niedermayer
- Utility Code:
- libavformat/utils.c Michael Niedermayer
-
-
- Muxers/Demuxers:
- 4xm.c Mike Melanson
- adtsenc.c Robert Swain
- afc.c Paul B Mahol
- aiffdec.c Baptiste Coudurier, Matthieu Bouron
- aiffenc.c Baptiste Coudurier, Matthieu Bouron
- ape.c Kostya Shishkov
- apngdec.c Benoit Fouet
- ass* Aurelien Jacobs
- astdec.c Paul B Mahol
- astenc.c James Almer
- avi* Michael Niedermayer
- avisynth.c AvxSynth Team (avxsynth.testing at gmail dot com)
- avr.c Paul B Mahol
- bink.c Peter Ross
- brstm.c Paul B Mahol
- caf* Peter Ross
- cdxl.c Paul B Mahol
- crc.c Michael Niedermayer
- daud.c Reimar Doeffinger
- dss.c Oleksij Rempel, Michael Niedermayer
- dtshddec.c Paul B Mahol
- dv.c Roman Shaposhnik
- dxa.c Kostya Shishkov
- electronicarts.c Peter Ross
- epafdec.c Paul B Mahol
- ffm* Baptiste Coudurier
- flac* Justin Ruggles
- flic.c Mike Melanson
- flvdec.c, flvenc.c Michael Niedermayer
- gxf.c Reimar Doeffinger
- gxfenc.c Baptiste Coudurier
- hls.c Anssi Hannula
- hls encryption (hlsenc.c) Christian Suloway
- idcin.c Mike Melanson
- idroqdec.c Mike Melanson
- iff.c Jaikrishnan Menon
- img2*.c Michael Niedermayer
- ipmovie.c Mike Melanson
- ircam* Paul B Mahol
- iss.c Stefan Gehrer
- jacosub* Clément Bœsch
- jvdec.c Peter Ross
- libmodplug.c Clément Bœsch
- libnut.c Oded Shimon
- lmlm4.c Ivo van Poorten
- lvfdec.c Paul B Mahol
- lxfdec.c Tomas Härdin
- matroska.c Aurelien Jacobs
- matroskadec.c Aurelien Jacobs
- matroskaenc.c David Conrad
- matroska subtitles (matroskaenc.c) John Peebles
- metadata* Aurelien Jacobs
- mgsts.c Paul B Mahol
- microdvd* Aurelien Jacobs
- mm.c Peter Ross
- mov.c Michael Niedermayer, Baptiste Coudurier
- movenc.c Baptiste Coudurier, Matthieu Bouron
- mpc.c Kostya Shishkov
- mpeg.c Michael Niedermayer
- mpegenc.c Michael Niedermayer
- mpegts.c Marton Balint
- mpegtsenc.c Baptiste Coudurier
- msnwc_tcp.c Ramiro Polla
- mtv.c Reynaldo H. Verdejo Pinochet
- mxf* Baptiste Coudurier
- mxfdec.c Tomas Härdin
- nistspheredec.c Paul B Mahol
- nsvdec.c Francois Revol
- nut* Michael Niedermayer
- nuv.c Reimar Doeffinger
- oggdec.c, oggdec.h David Conrad
- oggenc.c Baptiste Coudurier
- oggparse*.c David Conrad
- oma.c Maxim Poliakovski
- paf.c Paul B Mahol
- psxstr.c Mike Melanson
- pva.c Ivo van Poorten
- pvfdec.c Paul B Mahol
- r3d.c Baptiste Coudurier
- raw.c Michael Niedermayer
- rdt.c Ronald S. Bultje
- rl2.c Sascha Sommer
- rmdec.c, rmenc.c Ronald S. Bultje, Kostya Shishkov
- rtmp* Kostya Shishkov
- rtp.c, rtpenc.c Martin Storsjo
- rtpdec_ac3.* Gilles Chanteperdrix
- rtpdec_dv.* Thomas Volkert
- rtpdec_h261.*, rtpenc_h261.* Thomas Volkert
- rtpdec_hevc.*, rtpenc_hevc.* Thomas Volkert
- rtpdec_mpa_robust.* Gilles Chanteperdrix
- rtpdec_asf.* Ronald S. Bultje
- rtpdec_vp9.c Thomas Volkert
- rtpenc_mpv.*, rtpenc_aac.* Martin Storsjo
- rtsp.c Luca Barbato
- sbgdec.c Nicolas George
- sdp.c Martin Storsjo
- segafilm.c Mike Melanson
- segment.c Stefano Sabatini
- siff.c Kostya Shishkov
- smacker.c Kostya Shishkov
- smjpeg* Paul B Mahol
- spdif* Anssi Hannula
- srtdec.c Aurelien Jacobs
- swf.c Baptiste Coudurier
- takdec.c Paul B Mahol
- tta.c Alex Beregszaszi
- txd.c Ivo van Poorten
- voc.c Aurelien Jacobs
- wav.c Michael Niedermayer
- wc3movie.c Mike Melanson
- webm dash (matroskaenc.c) Vignesh Venkatasubramanian
- webvtt* Matthew J Heaney
- westwood.c Mike Melanson
- wtv.c Peter Ross
- wv.c Kostya Shishkov
- wvenc.c Paul B Mahol
-
- Protocols:
- bluray.c Petri Hintukainen
- ftp.c Lukasz Marek
- http.c Ronald S. Bultje
- libssh.c Lukasz Marek
- mms*.c Ronald S. Bultje
- udp.c Luca Abeni
- icecast.c Marvin Scholz
-
-
- libswresample
- =============
-
- Generic parts:
- audioconvert.c Michael Niedermayer
- dither.c Michael Niedermayer
- rematrix*.c Michael Niedermayer
- swresample*.c Michael Niedermayer
-
- Resamplers:
- resample*.c Michael Niedermayer
- soxr_resample.c Rob Sykes
-
-
- Operating systems / CPU architectures
- =====================================
-
- Alpha Mans Rullgard, Falk Hueffner
- ARM Mans Rullgard
- AVR32 Mans Rullgard
- MIPS Mans Rullgard, Nedeljko Babic
- Mac OS X / PowerPC Romain Dolbeau, Guillaume Poirier
- Amiga / PowerPC Colin Ward
- Linux / PowerPC Luca Barbato
- Windows MinGW Alex Beregszaszi, Ramiro Polla
- Windows Cygwin Victor Paesa
- Windows MSVC Matthew Oliver
- Windows ICL Matthew Oliver
- ADI/Blackfin DSP Marc Hoffman
- Sparc Roman Shaposhnik
- x86 Michael Niedermayer
-
-
- Releases
- ========
-
- 2.7 Michael Niedermayer
- 2.6 Michael Niedermayer
- 2.5 Michael Niedermayer
- 2.4 Michael Niedermayer
- 2.2 Michael Niedermayer
-
- If you want to maintain an older release, please contact us
-
-
- GnuPG Fingerprints of maintainers and contributors
- ==================================================
-
- Alexander Strasser 1C96 78B7 83CB 8AA7 9AF5 D1EB A7D8 A57B A876 E58F
- Anssi Hannula 1A92 FF42 2DD9 8D2E 8AF7 65A9 4278 C520 513D F3CB
- Anton Khirnov 6D0C 6625 56F8 65D1 E5F5 814B B50A 1241 C067 07AB
- Ash Hughes 694D 43D2 D180 C7C7 6421 ABD3 A641 D0B7 623D 6029
- Attila Kinali 11F0 F9A6 A1D2 11F6 C745 D10C 6520 BCDD F2DF E765
- Baptiste Coudurier 8D77 134D 20CC 9220 201F C5DB 0AC9 325C 5C1A BAAA
- Ben Littler 3EE3 3723 E560 3214 A8CD 4DEB 2CDB FCE7 768C 8D2C
- Benoit Fouet B22A 4F4F 43EF 636B BB66 FCDC 0023 AE1E 2985 49C8
- Clément Bœsch 52D0 3A82 D445 F194 DB8B 2B16 87EE 2CB8 F4B8 FCF9
- Daniel Verkamp 78A6 07ED 782C 653E C628 B8B9 F0EB 8DD8 2F0E 21C7
- Diego Biurrun 8227 1E31 B6D9 4994 7427 E220 9CAE D6CC 4757 FCC5
- FFmpeg release signing key FCF9 86EA 15E6 E293 A564 4F10 B432 2F04 D676 58D8
- Gwenole Beauchesne 2E63 B3A6 3E44 37E2 017D 2704 53C7 6266 B153 99C4
- Jaikrishnan Menon 61A1 F09F 01C9 2D45 78E1 C862 25DC 8831 AF70 D368
- Jean Delvare 7CA6 9F44 60F1 BDC4 1FD2 C858 A552 6B9B B3CD 4E6A
- Justin Ruggles 3136 ECC0 C10D 6C04 5F43 CA29 FCBE CD2A 3787 1EBF
- Loren Merritt ABD9 08F4 C920 3F65 D8BE 35D7 1540 DAA7 060F 56DE
- Lou Logan 7D68 DC73 CBEF EABB 671A B6CF 621C 2E28 82F8 DC3A
- Luca Barbato 6677 4209 213C 8843 5B67 29E7 E84C 78C2 84E9 0E34
- Michael Niedermayer 9FF2 128B 147E F673 0BAD F133 611E C787 040B 0FAB
- Nicolas George 24CE 01CE 9ACC 5CEB 74D8 8D9D B063 D997 36E5 4C93
- Panagiotis Issaris 6571 13A3 33D9 3726 F728 AA98 F643 B12E ECF3 E029
- Peter Ross A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B
- Reimar Doeffinger C61D 16E5 9E2C D10C 8958 38A4 0899 A2B9 06D4 D9C7
- Reinhard Tartler 9300 5DC2 7E87 6C37 ED7B CA9A 9808 3544 9453 48A4
- Reynaldo H. Verdejo Pinochet 6E27 CD34 170C C78E 4D4F 5F40 C18E 077F 3114 452A
- Robert Swain EE7A 56EA 4A81 A7B5 2001 A521 67FA 362D A2FC 3E71
- Sascha Sommer 38A0 F88B 868E 9D3A 97D4 D6A0 E823 706F 1E07 0D3C
- Stefano Sabatini 0D0B AD6B 5330 BBAD D3D6 6A0C 719C 2839 FC43 2D5F
- Stephan Hilb 4F38 0B3A 5F39 B99B F505 E562 8D5C 5554 4E17 8863
- Tiancheng "Timothy" Gu 9456 AFC0 814A 8139 E994 8351 7FE6 B095 B582 B0D4
- Tim Nicholson 38CF DB09 3ED0 F607 8B67 6CED 0C0B FC44 8B0B FC83
- Tomas Härdin A79D 4E3D F38F 763F 91F5 8B33 A01E 8AE0 41BB 2551
- Wei Gao 4269 7741 857A 0E60 9EC5 08D2 4744 4EFA 62C1 87B9
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