TwoCC

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The TwoCC is the audio counterpart to the video FourCC. It is the audio format identifier used in the RIFF based multimedia formats by Microsoft (WAV and AVI). The TwoCC is 2 bytes long and stored in little endian format on disk. You can register your TwoCC with Microsoft but it seems that only some companies perform this process.

  • 0x0000 Microsoft Unknown Wave Format
  • 0x0001 Microsoft PCM Format
  • 0x0002 Microsoft ADPCM CODEC for MSACM msacm.msadpcm msadp32.acm
  • 0x0003 IEEE FLOAT Microsoft IEEE754
  • 0x0004 Compaq Computer VSELP (codec for Windows CE 2.0 devices)
  • 0x0005 IBM CVSD IBM Corporation
  • 0x0006 Microsoft CCITT G.711 (A-Law and u-Law) CODEC for MSACM msacm.msg711 msg711.acm
  • 0x0007 Microsoft CCITT G.711 (A-Law and u-Law) CODEC for MSACM msacm.msg711 msg711.acm
  • 0x0008 Microsoft DTS
  • 0x0009 Microsoft DRM
  • 0x000A WMSpeech Microsoft
  • 0x000B Windows Media RT Voice Microsoft
  • 0x0010 OKI ADPCM
  • 0x0011 IMA ADPCM CODEC for MSACM msacm.imaadpcm imaadp32.acm
  • 0x0012 Videologic MediaSpace ADPCM
  • 0x0013 Sierra ADPCM Sierra Semiconductor Corp
  • 0x0014 G723 ADPCM Antex Electronics Corporation
  • 0x0015 DIGISTD DSP Solutions, Inc.
  • 0x0016 DIGIFIX DSP Solutions, Inc.
  • 0x0017 Dialogic OKI ADPCM
  • 0x0018 MediaVision ADPCM
  • 0x0019 CU CODEC Mobile Voice Hewlett-Packard Company
  • 0x001A Hewlett-Packard HP DYNAMIC VOICE
  • 0x0020 Yamaha ADPCM
  • 0x0021 Sonarc Speech Compression
  • 0x0022 DSP Group TrueSpeech(TM) Audio Codec for MSACM V3.50 msacm.trspch tssoft32.acm
  • 0x0023 ECHOSC1 Echo Speech Corporation
  • 0x0024 Audiofile AF36 Virtual Music, Inc.
  • 0x0025 APTX Audio Processing Technology
  • 0x0026 Audiofile AF10 Virtual Music, Inc.
  • 0x0027 Prosody 1612 codec for CTI Speech Card Aculab plc
  • 0x0028 LRC Merging Technologies S.A.
  • 0x0030 Dolby Labs AC2
  • 0x0031 Microsoft GSM 6.10 Audio CODEC for MSACM msacm.msgsm610 msgsm32.acm
  • 0x0032 MSNAudio Microsoft
  • 0x0033 Antex ADPCME Antex Electronics Corporation
  • 0x0034 Control Res. VQLPC Control Resources Limited
  • 0x0035 DigiReal DSP Solutions, Inc.
  • 0x0036 DigiADPCM DSP Solutions, Inc.
  • 0x0037 Control Res. CR10 Control Resources Limited
  • 0x0038 NMS VBXADPCM Natural MicroSystems
  • 0x0039 CS IMAADPCM Roland RDAC Crystal Semiconductor IMA ADPCM
  • 0x003A ECHOSC3 Echo Speech Corporation
  • 0x003B Rockwell ADPCM Rockwell International
  • 0x003C Rockwell DIGITALK Rockwell International
  • 0x003D XEBEC Xebec Multimedia Solutions Limited
  • 0x0040 G721 ADPCM Antex Electronics Corporation
  • 0x0041 G728 CELP Antex Electronics Corporation
  • 0x0042 Microsoft G.723.1 CODEC MSACM msacm.msg723 msg723.acm
  • 0x0043 IBM AVC ADPCM
  • 0x0044 MSG729 Microsoft
  • 0x0045 ITU-T G.726 ADPCM
  • 0x0050 MPEG (MP1/MP2) ISO/IEC
  • 0x0050 QDesign MPEG QDesign Corporation qmpeg.acm
  • 0x0052 InSoft RT24 (ACM codec is an alternative codec)
  • 0x0053 PAC InSoft, Inc.
  • 0x0055 MPEG Layer-3 Audio Codec for MSACM msacm.l3ACM l3codeca.acm
  • 0x0057 AMR-NB
  • 0x0058 AMR-WB
  • 0x0059 Lucent G.723
  • 0x0060 Cirrus Cirrus Logic
  • 0x0061 ESS Technology ESPCM / Duck DK4 ADPCM
  • 0x0062 msacm.voxacm160 vct3216.acm Voxware v1.1.6/1.1.8 File-Mode Codecs Voxware, Inc. vct3216.acm
  • 0x0062 Voxware file-mode codec / Duck DK3 ADPCM
  • 0x0063 Canopus ATRAC Canopus, co., Ltd.
  • 0x0064 G726 ADPCM APICOM
  • 0x0065 G722 ADPCM APICOM
  • 0x0066 DSAT Microsoft
  • 0x0067 DSAT DISPLAY Microsoft
  • 0x0069 msacm.voxacm160 Voxware v1.1.8 Bitstream-Mode Codecs Voxware, Inc. vct3216.acm
  • 0x0070 Voxware AC8 (Lernout & Hauspie CELP 4.8 kbps) lhacm.acm
  • 0x0071 Voxware AC10 (Lernout & Hauspie CBS 8kbps) lhacm.acm
  • 0x0072 Voxware AC16 (Lernout & Hauspie CBS 12kbps) lhacm.acm
  • 0x0073 Voxware AC20 (Lernout & Hauspie CBS 16kbps) lhacm.acm
  • 0x0074 Voxware MetaVoice Audio Compression Manager Driver msacm.voxacm160 vct3216.acm
  • 0x0075 Voxware RT29 Metasound Audio Compression Manager Driver msacm.voxacm160 vct3216.acm
  • 0x0076 Voxware RT29HW
  • 0x0077 Voxware VR12
  • 0x0078 Voxware VR18
  • 0x0079 Voxware TQ40
  • 0x007A Voxware SC3
  • 0x007B Voxware SC3
  • 0x0080 Softsound Softsound, Ltd.
  • 0x0081 Voxware TQ60
  • 0x0082 Microsoft MSRT24 (ACM codec is an alternative codec)
  • 0x0083 G729A AT&T Labs, Inc.
  • 0x0084 MVI MVI2 Motion Pixels
  • 0x0085 DataFusion Systems G.726
  • 0x0086 DataFusion Systems GSM610
  • 0x0088 ISIAUDIO Iterated Systems, Inc.
  • 0x0089 ONLIVE OnLive! Technologies, Inc.
  • 0x008A MULTITUDE FT SX20 Multitude, Inc.
  • 0x008B G.721 ADPCM Infocom ITS A/S
  • 0x008C CONVEDIA G729 Convedia Corporation
  • 0x008D Not specified congruency, Inc.
  • 0x0091 SBC24 Siemens Business Communications Sys
  • 0x0092 Dolby AC3 SPDIF Sonic Foundry
  • 0x0093 MediaSonic G.723
  • 0x0094 Prosody 8KBPS Aculab plc
  • 0x0097 Zyxel ADPCM ZyXEL Communications, Inc.
  • 0x0098 Philips LPCBB
  • 0x0099 PACKED Studer Professional Audio AG
  • 0x00A0 Malden PhonyTalk Malden Electronics Ltd.
  • 0x00A1 Racal Recorder GSM Racal Recorders
  • 0x00A2 Racal Recorder G720.a Racal Recorders
  • 0x00A3 Racal G723.1 Racal Recorders
  • 0x00A4 Racal Tetra ACELP Racal Recorders
  • 0x00B0 NEC AAC NEC Corporation
  • 0x00E1 Microsoft ADPCM
  • 0x00f4 WRPR codec
  • 0x00FF AAC
  • 0x0100 Rhetorex ADPCM
  • 0x0101 IBM mu-law / BeCubed Software IRAT
  • 0x0102 ALAW IBM a-law format
  • 0x0103 ADPCM IBM AVC Adaptive Differential Pulse Code Modulation
  • 0x0111 Vivo G.723
  • 0x0112 Vivo Siren
  • 0x0120 PHILIPS CELP Philips Speech Processing
  • 0x0121 PHILIPS GRUNDIG Philips Speech Processing
  • 0x0123 DEC G723 Digital Equipment Corporation Digital G.723
  • 0x0125 Sanyo LD ADPCM
  • 0x0130 Sipro Lab Telecom ACELP.net audio codec Sipro Lab TelecomInc. sl_anet.acm
  • 0x0131 Sipro Lab Telecom ACELP.4800
  • 0x0132 Sipro Lab Telecom ACELP.8V3
  • 0x0133 Sipro Lab Telecom ACELP.G.729
  • 0x0134 Sipro Lab Telecom ACELP.G.729A
  • 0x0135 Sipro Lab Telecom ACELP.KELVIN
  • 0x0136 VOICEAGE AMR VoiceAge Corporation
  • 0x0140 G726ADPCM Dictaphone Corporation
  • 0x0141 CELP68 Dictaphone Corporation
  • 0x0142 CELP54 Dictaphone Corporation
  • 0x0150 Qualcomm PureVoice
  • 0x0151 Qualcomm HalfRate
  • 0x0155 TUBGSM Ring Zero Systems, Inc.
  • 0x0160 Windows Media Audio msacm.msaudio1 msaud32.acm
  • 0x0161 Windows Media Audio V2 V7 V8 V9 / DivX audio (WMA) / Alex AC3 Audio msaud32.acm
  • 0x0162 Windows Media Audio 9 Professional Microsoft, Inc.
  • 0x0163 Windows Media Audio 9 Lossless Microsoft, Inc.
  • 0x0164 WMA Pro over S/PDIF
  • 0x0170 UNISYS NAP ADPCM Unisys Corporation
  • 0x0171 UNISYS NAP ULAW Unisys Corporation
  • 0x0172 UNISYS NAP ALAW Unisys Corporation
  • 0x0173 UNISYS NAP 16K Unisys Corporation
  • 0x0174 MM SYCOM ACM SYC008 SyCom Technologies
  • 0x0175 MM SYCOM ACM SYC701 G726L SyCom Technologies
  • 0x0176 MM SYCOM ACM SYC701 CELP54 SyCom Technologies
  • 0x0177 MM SYCOM ACM SYC701 CELP68 SyCom Technologies
  • 0x0178 Knowledge Adventure ADPCM
  • 0x0180 MPEG2AAC Fraunhofer IIS
  • 0x0190 DTS DS Digital Theater Systems, Inc.
  • 0x0200 Creative Labs ADPCM
  • 0x0202 Creative Labs FastSpeech8
  • 0x0203 Creative Labs FastSpeech10
  • 0x0210 UHER ADPCM UHER informatic GmbH
  • 0x0215 Ulead DV AudioACM Driver msacm.dvACM dvacm.acm
  • 0x0216 Ulead DV Audio Codec Ulead Systems, Inc. Dvacm.acm
  • 0x0217 Ulead MP3 codec engine msacm.ulmp3acm Warning: Codec is disabled
  • 0x0220 Quarterdeck Quarterdeck Corporation
  • 0x0230 I-Link VC I-link Worldwide
  • 0x0240 RAW SPORT Aureal Semiconductor
  • 0x0241 ESST AC3 ESS Technology
  • 0x0250 IPI HSX Interactive Products, Inc.
  • 0x0251 IPI RPELP Interactive Products, Inc.
  • 0x0260 CS2 Consistent Software
  • 0x0270 Sony ATRAC3 (SCX, same as MiniDisk LP2)
  • 0x0271 Sony SCY
  • 0x0272 Sony ATRAC3
  • 0x0273 Sony SPC
  • 0x0280 TELUM Telum Inc.
  • 0x0281 TELUMIA Telum Inc.
  • 0x0285 Norcom Voice Systems ADPCM Norcom Electronics Corporation
  • 0x028e MSN Messenger Audio Codec msacm.siren sirenacm.dll
  • 0x0300 Fujitsu FM TOWNS SND
  • 0x0301 Not specified Fujitsu Corporation
  • 0x0302 Not specified Fujitsu Corporation
  • 0x0303 Not specified Fujitsu Corporation
  • 0x0304 Not specified Fujitsu Corporation
  • 0x0305 Not specified Fujitsu Corporation
  • 0x0306 Not specified Fujitsu Corporation
  • 0x0307 Not specified Fujitsu Corporation
  • 0x0308 Not specified Fujitsu Corporation
  • 0x0350 DEVELOPMENT Micronas Semiconductors, Inc.
  • 0x0351 CELP833 Micronas Semiconductors, Inc.
  • 0x03eb DVMPEG Audio Darim Vision Co., Ltd. dvacmau.dll
  • 0x0400 BTV Digital (Brooktree digital audio format)
  • 0x0401 Intel Music Coder for MSACM msacm.imc imc32.acm
  • 0x0402 Indeo® audio software msacm.iac2 iac25_32.ax
  • 0x0450 QDesign Music
  • 0x0500 On2 VP7 On2 Technologies AVC Audio
  • 0x0501 On2 VP6 On2 Technologies
  • 0x0680 AT&T Labs VME VMPCM
  • 0x0681 AT&T Labs TPC
  • 0x0700 YMPEG Alpha (dummy for MPEG-2 compressor)
  • 0x08AE ClearJump Lightwave Lossless http://www.clearjump.com
  • 0x0AAC HDX4 AAC Jomigo GmbH
  • 0x1000 Olivetti GSM
  • 0x1001 Olivetti ADPCM
  • 0x1002 Olivetti CELP
  • 0x1003 Olivetti SBC
  • 0x1004 Olivetti OPR
  • 0x1100 Lernout & Hauspie codec
  • 0x1101 Lernout & Hauspie CELP codec
  • 0x1102 Lernout & Hauspie SBC codec
  • 0x1103 Lernout & Hauspie SBC codec
  • 0x1104 Lernout & Hauspie SBC codec
  • 0x1400 Norris Communication
  • 0x1401 AT&T Labs ISIAudio
  • 0x1500 Soundspace Musicompress Soundspace Music Compression Netspeak GSM - nsgsm32.acm
  • 0x1501 Netspeak Truespeech - nstsp32.acm
  • 0x181C VoxWare RT24 speech codec Voxware Inc.
  • 0x181E Lucent elemedia AX24000P Music codec
  • 0x1971 Sonic Foundry LOSSLESS
  • 0x1979 Innings Telecom Inc. ADPCM
  • 0x1C07 Lucent SX8300P speech codec
  • 0x1C0C Lucent SX5363S G.723 compliant codec
  • 0x1F03 CUseeMe DigiTalk (ex-Rocwell)
  • 0x1FC4 NCT ALF2CD codec http://www.nctsoft.com
  • 0x2000 AC-3ACM Codec msacm.ac3acm ac3acm.acm
  • 0x2001 Dolby DTS Dolby Labs
  • 0x2002 RealAudio 1 / 2 14.4
  • 0x2003 RealAudio 1 / 2 28.8
  • 0x2004 RealAudio G2 / 8 Cook (low bitrate)
  • 0x2005 RealAudio 3 / 4 / 5 Music (DNET)
  • 0x2006 RealAudio 10 AAC (RAAC)
  • 0x2007 RealAudio 10 AAC+ (RACP)
  • 0x2500 Reserved range to * 0x2600 Microsoft
  • 0x3313 makeAVIS (ffvfw fake AVI sound from AviSynth scripts) ff_acm.acm
  • 0x4143 Divio MPEG-4 AAC audio
  • 0x4201 Nokia adaptive multirate Nokia Mobile Phones
  • 0x4243 Divio's G726 Divio, Inc.
  • 0x434C LEAD Speech
  • 0x564C LEAD Vorbis
  • 0x5756 WavPack Audio xiph.org [open source]
  • 0x6665 Litewave audio compressor (lw.zip from http://www.clearjump.com)
  • 0x674f Ogg Vorbis mode 1 CODEC for MSACM msacm.vorbis vorbis.acm
  • 0x6750 Ogg Vorbis mode 2 CODEC for MSACM msacm.vorbis vorbis.acm
  • 0x6751 Ogg Vorbis mode 3 CODEC for MSACM msacm.vorbis vorbis.acm
  • 0x676f Ogg Vorbis mode 1+ CODEC for MSACM msacm.vorbis vorbis.acm
  • 0x6770 Ogg Vorbis mode 2+ CODEC for MSACM msacm.vorbis vorbis.acm
  • 0x6771 Ogg Vorbis mode 3+ CODEC for MSACM msacm.vorbis vorbis.acm
  • 0x7000 3COM NBX 3Com Corporation
  • 0x706D FAAD AAC (open source)
  • 0x77A1 The True Audio
  • 0x7A21 GSM-AMR (CBR, no SID) EmzAMRNBDec.dll (doesnt actually decode properly)
  • 0x7A22 GSM-AMR (VBR, including SID) GSMA/3GPP EmzAMRNBDec.dll (doesnt actually decode properly)
  • 0x8180 (unverified) For the Record - http://www.fortherecord.com
  • 0xA100 COMVERSEINFOSYS G723 1 Comverse Infosys Ltd.
  • 0xA101 COMVERSEINFOSYS AVQSBC Comverse Infosys Ltd.
  • 0xA102 COMVERSEINFOSYS OLDSBC Comverse Infosys Ltd.
  • 0xA103 Symbol Technology's G729A Symbol Technologies Canada
  • 0xA104 VoiceAge AMR WB VoiceAge Corporation
  • 0xA105 Ingenient Technologies Inc. G726
  • 0xA106 ISO/MPEG-4 advanced audio Coding AAC.
  • 0xA107 Encore Software Ltd's G726 Encore Software Ltd.
  • 0xA109 Speex ACM Codec xiph.org (Open Source)
  • 0xC0CC GigaLink Audio Codec
  • 0xDFAC DebugMode SonicFoundry Vegas FrameServer ACM Codec
  • 0xe708 Unknown -
  • 0xF1AC Free Lossless Audio Codec FLAC
  • 0xFFFC VDOwave Audio
  • 0xFFFE Extensible wave format
  • 0xFFFF In Development / Unregistered