Audio Codecs
Complete reference of supported audio codecs
Supported Audio Codecs
This reference lists all audio codecs supported by Probe.dev’s analysis tools. Use this to understand what audio formats your media files contain.
| Codec | Description |
|---|---|
| aac | Advanced Audio Coding |
| ac16 | Voxware AC16 (Lernout & Hauspie CBS 12kbps) |
| ac3 | ATSC A/52A / Dolby AC-3 / Dolby Digital |
| ac4 | Dolby AC-4 |
| acelp_kelvin | Sipro KELVIN |
| acelp_sipr | RealAudio SIPR / ACELP.NET |
| adpcm | Adaptive Differential Pulse-Code Modulation |
| alac | Apple Lossless Audio Codec |
| alf2cd | NCT ALF2 CD Audio Codec |
| amr_nb | Adaptive Multi-Rate NarrowBand |
| amr_wb | Adaptive Multi-Rate WideBand |
| ape | Monkey’s Audio |
| atrac3 | Adaptive TRansform Acoustic Coding 3 |
| atrac3plus | Adaptive TRansform Acoustic Coding 3+ |
| avc | On2 Audio for Video Codec |
| celp | Philips Speech Processing |
| cook | Cook / Cooker / Gecko (RealAudio G2) |
| dolby_e | Dolby E |
| dsd | Direct Stream Digital |
| dst | Direct Stream Transfer |
| dts | Digital Theater Systems |
| dvaudio | DV Audio |
| eac3 | ATSC A/52B / Dolby AC-3 / Dolby E-AC-3 / Dolby Digital Plus |
| evrc | Enhanced Variable Rate Codec |
| flac | Free Lossless Audio Codec |
| ftr | FTR Voice |
| g723_1 | G.723.1 |
| g729 | G.729 |
| gsm | GSM |
| gsm_ms | GSM / Microsoft variant |
| iac | Indeo Audio Coder |
| ilbc | Internet Low Bitrate Codec |
| imc | Intel Music Coder |
| litewave | ClearJump LiteWave |
| mace3 | MACE (Macintosh Audio Compression/Expansion) 3:1 |
| mace6 | MACE (Macintosh Audio Compression/Expansion) 6:1 |
| metasound | Voxware MetaSound |
| metavoice | Voxware MetaVoice |
| misc4 | Micronas SC-4 Audio |
| mlp | Meridian Lossless Packing |
| mp1 | MPEG audio layer 1 |
| mp2 | MPEG audio layer 2 |
| mp3 | MPEG audio layer 3 |
| mp3on4 | MPEG audio layer 3 encapsulated into MPEG-4 |
| mp4als | MPEG-4 Audio Lossless Coding |
| mpegh_3d_audio | MPEG-H 3D Audio |
| msnsiren | MSN Siren |
| musepack7 | Musepack SV7 |
| musepack8 | Musepack SV8 |
| nellymoser | Nellymoser Asao |
| opus | Opus Interactive Audio Codec |
| osq | Original Sound Quality |
| pcm | Pulse-Code Modulation |
| pcm_alaw | PCM A-law / G.711 A-law |
| pcm_mulaw | PCM mu-law / G.711 mu-law |
| qcelp | QCELP / PureVoice |
| qdm2 | QDesign Music Codec 2 |
| ralf | RealAudio Lossless |
| realaudio1 | RealAudio 1.0 |
| realaudio2 | RealAudio 2.0 |
| rk_audio | RK Audio |
| sbc | Lernout & Hauspie SBC |
| shorten | Shorten |
| speex | Speex |
| tak | Tom’s lossless Audio Kompressor |
| truehd | Dolby TrueHD |
| truespeech | DSP Group TrueSpeech |
| tta | True Audio |
| twinvq | VQF TwinVQ |
| vorbis | Vorbis |
| wavpack | WavPack |
| wma_lossless | Windows Media Audio Lossless |
| wma_pro | Windows Media Audio 9 Professional |
| wma_v1 | Windows Media Audio 1 |
| wma_v2 | Windows Media Audio 2 |
| wma_voice | Windows Media Audio Voice |
Common Audio Formats
Lossless
FLAC - Free Lossless Audio Codec
ALAC - Apple Lossless Audio Codec
WavPack - Hybrid lossless audio compression
APE - Monkey’s Audio
Lossy Compressed
AAC - Advanced Audio Coding
MP3 - MPEG audio layer 3
Opus - Modern, efficient codec
Vorbis - Open source alternative
Professional
DTS - Digital Theater Systems
Dolby Digital (AC-3) - Cinema standard
Dolby E - Professional distribution
PCM - Uncompressed audio
Legacy/Specialized
RealAudio - Streaming audio (legacy)
WMA - Windows Media Audio
ADPCM - Adaptive compression
GSM - Mobile telephony
This list includes both modern and legacy codecs. Probe.dev can analyze media containing any of these audio formats.