Transcription – Supported File Types

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AWS File Types

Reveal transcribes audio and video files into linked searchable text through AWS, which supports the below file types:

.amr*

.flac

.m4a

.mp3

.mp4

.ogg**

.wav

.webm**

*Amazon Transcribe supports both Adaptive Multi-Rate Wideband (AMR-WB) and Adaptive Multi-Rate Narrowband (AMR-NB) codecs.
**Amazon Transcribe supports the Opus codec.

Note

Although Reveal Review can transcribe FLAC and AMR file types, they are not currently supported by our in-browser media player.

Transcription Tips

The following link provides a list of supported languages for Reveal's transcription service:  Comprehensive List of Languages Supported. There is no limitation to Transcribe service calls.

For best results:

  • Use a lossless format. You can choose either FLAC, or WAV with PCM 16-bit encoding.

  • Use a sample rate of 8,000 Hz for telephone audio.