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.