TwoCC

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.

If you need help finding any codec mail me compn@ffmpeg.org

TwoCC	Description	Vendor	Filename(s)	Comment
0x0000	Microsoft Unknown Wave Format
0x0001	Microsoft PCM Format	Microsoft
0x0002	Microsoft ADPCM	Microsoft	msacm.msadpcm=msadp32.acm
0x0003	IEEE754 FLOAT	Microsoft
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)	Microsoft	msacm.msg711=msg711.acm
0x0007	Microsoft CCITT G.711 (A-Law and u-Law)	Microsoft	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	Microsoft	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	Dictaphone Corporation	okiadp32.acm
0x0018	MediaVision ADPCM
0x0019	CU CODEC Mobile Voice	Hewlett-Packard Company	mobileV.acm
0x001A	Hewlett-Packard HP DYNAMIC VOICE
0x0020	Yamaha ADPCM
0x0021	Sonarc Speech Compression
0x0022	DSP Group TrueSpeech(TM)	DSP GROUP, INC.	msacm.trspch=tssoft32.acm
0x0023	ECHOSC1	Echo Speech Corporation
0x0024	Audiofile AF36	Virtual Music, Inc.
0x0024	Delrina DCC36 CODEC	Delrina (Canada) Corporation	DCC3632.ACM
0x0025	APTX	Audio Processing Technology
0x0026	Audiofile AF10	Virtual Music, Inc.	MSACM.AF10=AF10.ACM
0x0027	Prosody 1612			CTI Speech Card Aculab plc
0x0028	LRC	Merging Technologies S.A.
0x0030	Dolby Labs AC2
0x0031	Microsoft GSM 6.10	Microsoft	msacm.msgsm610=msgsm32.acm
0x0032	MSNAudio	Microsoft	MSACM.MSNAUDIO=msnaudio.acm
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	DCCRKL32.ACM
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	Microsoft	msacm.msg723=msg723.acm
0x0043	IBM AVC ADPCM
0x0044	MSG729	Microsoft
0x0045	ITU-T G.726 ADPCM		ITIG726.acm Scg726.acm
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		msacm.l3ACM=l3codeca.acm
0x0057	AMR-NB
0x0058	AMR-WB
0x0059	Lucent G.723
0x0060	Delrina Cirrus ALAW	Cirrus Logic	DCCCRS32.ACM
0x0061	ESS Technology ESPCM
0x0061	Duck DK4 ADPCM	The Duck Corporation	dk4bit32.acm
0x0062	Voxware File-Mode Codecs	Voxware, Inc.	msacm.voxacm160=vct3216.acm VDK32116.ACM VDK32118.ACM
0x0062	Duck DK3 ADPCM	The Duck Corporation	dk3b32.acm
0x0063	Canopus ATRAC	Canopus, co., Ltd.
0x0064	G726 ADPCM	APICOM
0x0065	G722 ADPCM	APICOM
0x0066	DSAT	Microsoft
0x0067	DSAT DISPLAY	Microsoft
0x0069	Voxware v1.1.8 Bitstream-Mode Codecs	Voxware, Inc.	msacm.voxacm160=vct3216.acm VDK32118.ACM
0x0069	Xbox ADPCM	Microsoft	XBADPCM.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	Voxware, Inc.	msacm.voxacm160=vct3216.acm VCT32150.acm
0x0075	Voxware RT29 Metasound	Voxware, Inc.	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	Microsoft		(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
0x0093	Symantec ZyXEL ADPCM	Symantec/Delrina (Canada) Corporation	DCCZYL32.ACM
0x0094	Prosody 8KBPS	Aculab plc
0x0097	Zyxel ADPCM	ZyXEL Communications, Inc.
0x0098	Philips LPCBB	Philips Speech Processing	SMLPCBB.ACM
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	Microsoft
0x00f4	WRPR codec
0x00FF	AAC
0x0100	Rhetorex ADPCM	Rhetorex Inc.	rhetorex.acm
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	Vivo Software	msacm.vivog723=vivog723.acm
0x0112	Vivo Siren	Vivo Software	msacm.vivog723=vivog723.acm
0x0120	PHILIPS CELP	Philips Speech Processing	smcelp32.acm
0x0121	PHILIPS GRUNDIG	Philips Speech Processing
0x0123	DEC G723	Digital Equipment Corporation Digital G.723
0x0125	Sanyo LD ADPCM	SANYO Electric Co., Ltd.	msacm.ldadpcm=LDADP32.acm
0x0130	Sipro Lab Telecom ACELP.net	Sipro Lab Telecom Inc.	msacm.sl_anet=sl_anet.acm
0x0131	Sipro Lab Telecom ACELP.4800	Sipro Lab Telecom Inc.
0x0132	Sipro Lab Telecom ACELP.8V3	Sipro Lab Telecom Inc.
0x0133	Sipro Lab Telecom ACELP.G.729	Sipro Lab Telecom Inc.
0x0134	Sipro Lab Telecom ACELP.G.729A	Sipro Lab Telecom Inc.
0x0135	Sipro Lab Telecom ACELP.KELVIN	Sipro Lab Telecom Inc.
0x0136	VOICEAGE AMR	VoiceAge Corporation
0x0140	G726ADPCM	Dictaphone Corporation
0x0141	CELP68	Dictaphone Corporation
0x0142	CELP54	Dictaphone Corporation
0x0150	Qualcomm PureVoice
0x0151	Qualcomm HalfRate
0x0155	TUB GSM 06.10	Ring Zero Systems, Inc.	MSACM.RZSGSM=RZSGSM32.ACM
0x0156	TUB GSM 06.10 (USR)	Ring Zero Systems, Inc.	MSACM.RZSGSM=RZSGSM32.ACM
0x0160	Windows Media Audio	Microsoft	msacm.msaudio1=msaud32.acm
0x0161	Windows Media Audio V2 V7 V8 V9 / DivX audio (WMA) / Alex AC3 Audio	Microsoft	msacm.msaudio1=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	Creative Technology Ltd	ctadp32.acm MSACM.WFM0200=WFM0200.ACM
0x0202	Creative Labs FastSpeech8	Creative Technology Ltd	CTFS32.ACM MSACM.WFM0202=WFM0202.ACM	CTFS32.ACM has no implementation
0x0203	Creative Labs FastSpeech10	Creative Technology Ltd	CTFS32.ACM MSACM.WFM0203=WFM0203.ACM	CTFS32.ACM has no implementation
0x0210	UHER ADPCM	UHER informatic GmbH	nvsadpcm.acm
0x0215	Ulead DV		msacm.dvACM=dvacm.acm
0x0216	Ulead DV	Ulead Systems, Inc.	msacm.dvACM=Dvacm.acm
0x0217	Ulead MP3		msacm.ulmp3acm=ulmp3acm.acm	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	Sony Corporation	msacm.at3=atrac3.acm	(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	nvsadpcm.acm
0x028e	MSN Messenger Audio Codec	Microsoft	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	Micronas Intermetall MI-SC4	Micronas Semiconductors, Inc.	MSACM.MI-SC4=MI-SC4.acm
0x0351	CELP833	Micronas Semiconductors, Inc.
0x03eb	DVMPEG Audio	Darim Vision Co., Ltd.	dvacmau.dll
0x0400	BTV Digital (Brooktree digital audio format)
0x0400	Citrix ADPCM	Citrix Systems, Inc.	ctxadpcm.acm
0x0400	Intel G.723.1	Intel Corporation	g723.acm
0x0401	Intel Music Coder		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		ympgacm.acm	(dummy for MPEG-2 compressor)
0x08AE	ClearJump Lightwave Lossless			http://www.clearjump.com
0x0917	Splash Studios Audio Codec	Splash Studios	MSACM.SPLASH=SPLASH.ACM	(seems to be no different from Microsoft IMA ADPCM)
0x0AAC	HDX4 AAC	Jomigo GmbH
0x0FFF	Voxware v1.1.6 Bitstream-Mode Codecs	Voxware, Inc.	msacm.voxacm160=vct3216.acm
0x1000	Olivetti GSM
0x1001	Olivetti ADPCM
0x1002	Olivetti CELP
0x1003	Olivetti SBC
0x1004	Olivetti OPR
0x1100	Lernout & Hauspie codec		MSACM.lh_codec=lh_codec.acm
0x1101	Lernout & Hauspie CELP codec		lhacm.acm
0x1102	Lernout & Hauspie SBC codec		lhacm.acm
0x1103	Lernout & Hauspie SBC codec		lhacm.acm
0x1104	Lernout & Hauspie SBC codec		lhacm.acm
0x1400	Norris Communication
0x1401	AT&T Labs ISIAudio
0x1500	Soundspace Musicompress	Soundspace Music Compression
0x1500	Netspeak GSM	NetSpeak Corporation	nsgsm32.acm
0x1501	Netspeak Truespeech	NetSpeak Corporation	nstsp32.acm
0x181C	VoxWare RT24 speech codec	Voxware Inc.	msacm.voxacm160=vct3216.acm NSRT2432.ACM VDK32116.ACM VDK32118.ACM
0x181E	Lucent elemedia AX24000P Music codec	Netscape Communications	nspac32.acm
0x1971	Sonic Foundry LOSSLESS
0x1979	Innings Telecom Inc. ADPCM
0x1C07	Lucent SX8300P speech codec	Lucent Technologies	nsx83p32.acm
0x1C0C	Lucent SX5363S G.723 compliant codec	Lucent Technologies	SX5363P.ACM Sx5363s.acm
0x1F03	CUseeMe DigiTalk (ex-Rockwell)	CUseeMe Networks, Inc.	WPDigitalk.acm
0x1FC4	NCT ALF2CD codec	NCT Company	alf2cd.acm	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		ff_acm.acm	(ffvfw fake AVI sound from AviSynth scripts)
0x4143	Divio MPEG-4 AAC audio
0x4180	fortherecord MPEG AAC celp?
0x4201	Nokia adaptive multirate	Nokia Mobile Phones
0x4243	Divio's G726	Divio, Inc.
0x434C	LEAD Speech
0x4f41	GeoVision ADPCM	GeoVision Inc.	msacm.geoadpcm=GeoADPCM.acm
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		msacm.vorbis=vorbis.acm
0x6750	Ogg Vorbis mode 2		msacm.vorbis=vorbis.acm
0x6751	Ogg Vorbis mode 3		msacm.vorbis=vorbis.acm
0x676f	Ogg Vorbis mode 1+		msacm.vorbis=vorbis.acm
0x6770	Ogg Vorbis mode 2+		msacm.vorbis=vorbis.acm
0x6771	Ogg Vorbis mode 3+		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		ITIG726.acm
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
0xCD02	Polycom PVX G.728	Polycom, Inc	plcmg728.acm
0xDFAC	DebugMode SonicFoundry Vegas FrameServer
0xe708	Unknown
0xF1AC	Free Lossless Audio Codec FLAC		CoreFLAC_ACM.acm
0xFFFB	Citrix Audio	Citrix Systems, Inc.	ctrxaud.acm
0xFFFC	VDOwave Audio	VDOnet Corp	MSACM.VDOACM=vdowave.acm
0xFFFC	Philips LONGPLAY CODEC	Philips Speech Processing	MSACM.PSPTRUSP=PSPTRUSP.acm
0xFFFD	Philips STANDARDPLAY CODEC	Philips Speech Processing	MSACM.PSPGRU=PSPGRU.acm
0xFFFE	Extensible wave format
0xFFFE	VDOnet VDOWave II	VDOnet Corp	VDOWAVE2.ACM
0xFFFF	In Development / Unregistered