---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/17557#article
headline: "17557: Media sample rate below minimum (8 kHz)"
url: https://www.twilio.com/docs/api/errors/17557
inLanguage: en
dateModified: 2026-09-17T18:23:40.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 17557: Media sample rate below minimum (8 kHz)

Log Type: APPLICATION

Log Level: ERROR

## Description

Twilio failed to transcribe audio because the media sample rate is below the minimum required 8 kHz. The transcription has been marked as `failed`.

### Possible causes

* The audio was recorded at a sample rate below 8 kHz.

### Possible solutions

* Record or re-encode the audio at a sample rate of 8 kHz or higher (telephone quality or better).

### Additional resources

* [Transcribe an external recording](/docs/voice/api/batch-transcription-resource#transcribe-an-external-recording)