Audio and video formats supported

53+ Languages — Languages for transcription
30+ Export Options — Text, PDF, DOCX, SRT, VTT
99% Accuracy Rate — Industry-leading AI accuracy

Supported Audio File Formats

  • 3GP 3GPP Multimedia File
  • AAC Advanced Audio Coding File
  • AIF Audio Interchange File Format
  • AIFC Compressed Audio Interchange File
  • AIFF Audio Interchange File Format
  • AMR Adaptive Multi-Rate Codec File
  • AU Audacity Audio File
  • AVI Audio Video Interleave File
  • CAF Core Audio File
  • FLAC Free Lossless Audio Codec File
  • FLV Animate Video File
  • GSM Global System for Mobile Audio File
  • M2V MPEG-2 Video
  • M4A MPEG-4 Audio File
  • M4V iTunes Video File
  • MK3D Matroska 3D Video File
  • MOOV Apple QuickTime Movie
  • MOV Apple QuickTime Movie
  • MP2 MPEG Layer II Compressed Audio File
  • MP3 MP3 Audio File
  • MP4 MPEG-4 Video File
  • MPA MPEG-2 Audio File
  • MPE MPEG Movie File
  • MPEG MPEG Movie
  • MPG MPEG Video File
  • MPGA MPEG-1 Layer 3 Audio File
  • MTS MadTracker 2 Sample File
  • MUS Finale Notation File
  • MXF Material Exchange Format File
  • OGA Ogg Vorbis Audio File
  • OGG Ogg Vorbis Audio File
  • OGV Ogg Video File
  • OGX Ogg Vorbis Multiplexed Media File
  • OPUS Opus Audio File
  • QT Apple QuickTime Movie
  • RM RealMedia File
  • TS Video Transport Stream File
  • VOB DVD Video Object File
  • WAV WAVE Audio File
  • WEBA Weba
  • WEBM WebM Video File
  • WMA Windows Media Audio File
  • WMV Windows Media Video File
  • XSPF XSPF Playlist File

Supported Video Formats

Sonix supports all popular video formats including MP4, MOV, AVI, MKV, WEBM, WMV, and more. We extract the audio track and transcribe it with high accuracy.

Accuracy of Transcription

Sonix achieves up to 99% accuracy using advanced AI speech recognition. Accuracy depends on audio quality, speaker clarity, and background noise levels.

Export Formats

Export your transcripts in multiple formats: plain text (.txt), Microsoft Word (.docx), PDF, SRT subtitles, VTT captions, and more specialized formats like FCPXML for video editors.

Transcribing in Different Languages

Yes! Sonix supports transcription in over 53 languages including English, Spanish, French, German, Chinese, Japanese, and many more. You can also translate transcripts between languages.

File Size Limit

Sonix supports files up to 4GB in size. For larger files, you can split them into smaller segments or contact our support team for enterprise solutions.

Universal Compatibility

Support for 44+ audio and video file formats means you can upload virtually any file without conversion.

Lightning Fast Processing

Our AI processes files 10x faster than real-time. Get a transcript of a 30-minute recording in just 3 minutes.

Multiple Export Options

Export to text, Word, PDF, SRT, VTT, and more. Integrate seamlessly into your workflow.

User Testimonials

  • "Sonix is so easy to use, and the quality is impressive in almost all languages we have tested so far." — Lucia G.
  • "I’m convinced that Sonix at the moment is the best transcription service existing anywhere in the world." — Helmut F.
  • "Sonix transcription service has dramatically reduced the time I need to spend on clients' interviews." — Curt W.
  • "It’s SO fast! I couldn't believe it. It's saved me hours of time." — Anne F.
  • "I was simply awed by speed and accuracy of your transcription service." — Myung K.
  • "In one word? FAN-TAS-TIC!!" — Paul K.
  • "I've used other platforms that don't do a good job at all. Sonix was close to perfect!" — Tamara P.
  • "The results from Sonix are the best I've seen. And fast." — Dan K.

Overall Quality

99% accuracy. Every word matters.
AI transcription and translation in 54+ languages. Start free trial, 30 minutes free, No credit card, Cancel anytime.