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What file types are supported?

The AssemblyAI API can transcribe both audio and video files in a wide variety of file formats. See below for a full list of supported file types.

Supported audio file types

  • .3ga
  • .aac
  • .ac3
  • .aif
  • .aiff
  • .alac
  • .amr
  • .ape
  • .au
  • .dss
  • .flac
  • .m4a
  • .m4b
  • .m4p
  • .mp3
  • .mpga
  • .ogg, .oga, .mogg
  • .opus
  • .qcp
  • .tta
  • .voc
  • .wav
  • .wma
  • .wv

Supported video file types

  • .webm
  • .MTS, .M2TS, .TS
  • .mov
  • .mp4, .m4p (with DRM), .m4v
  • .mxf