Supported Audio Formats

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Heavy audio compression may result in fidelty loss and may have strong impact on transcript accuracy. For best accuracy results, Norcom Solutions Group recommends the following codecs:

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• G711

• Un-compressed PCM WAV

 

 

Norcom Solutions Group is also capable of extracting audio from these media file formats. Accuracy loss is expected if the audio formats contains heavy compression.

 

Supported video/audio codec:

- (S)VCD (Super Video CD)
- CDRwin's .bin image file
- MPEG-1/2 (ES/PS/PES/VOB)
- AVI file format
- ASF/WMV/WMA format
- QT/MOV/MP4 format
- RealAudio/RealVideo format
- Ogg/OGM files
- Matroska
- NUT
- VIVO format
- FLI format
- NuppelVideo format
- yuv4mpeg format
- FILM (.cpk) format
- RoQ format
- PVA format

Supported audio codec:

- MPEG layer 1, 2, and 3 (MP3) audio
- AC3/A52, E-AC3, DTS (Dolby Digital) audio (software or SP/DIF)
- AAC (MPEG-4 audio)
- WMA (DivX Audio) v1, v2
- WMA 9 (WMAv3), Voxware audio, ACELP.net etc (using x86 DLLs)
- RealAudio: COOK, SIPRO, ATRAC3 (using Real libraries)
- RealAudio: DNET and older codecs
- QuickTime: Qclp, Q-Design QDMC/QDM2, MACE 3/6 (using QT libraries), ALAC
- Ogg Vorbis audio
- VIVO audio (g723, Vivo Siren) (using x86 DLL)
- alaw/ulaw, (ms)gsm, pcm, *adpcm and other simple old audio formats
- 3gp, amr
 

Audio Length

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Voicemail-to-text: for effective processing and responsive service, unless otherwise agreed, Norcom Solutions Group processes only first two minutes of any voicemail audio received.