---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/17555#article
headline: "17555: Media duration exceeds maximum (8 hours)"
url: https://www.twilio.com/docs/api/errors/17555
inLanguage: en
dateModified: 2026-09-17T18:23:40.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 17555: Media duration exceeds maximum (8 hours)

Log Type: APPLICATION

Log Level: ERROR

## Description

Twilio could not transcribe the recording because its duration is longer than eight hours, which is the maximum length supported by batch transcription. The transcription is marked as `failed`.

### Possible causes

* The audio file is longer than eight hours.

### Possible solutions

* Split the source media into segments shorter than eight hours (for example, 7:59:59 or less) and transcribe each segment separately.
* Verify the duration of your media file before you start a transcription job to avoid this error.

### Additional resources

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