# EPUBCheck MED-009: The time specified in the clipBegin…

Source: https://epublab.com/epubcheck/med-009/ (updated 2026-11-03)

EPUBCheck MED-009 is an error message: “The time specified in the clipBegin attribute must not be the same as clipEnd.” In a media overlay, a clip's clipBegin and clipEnd are the same, so the clip has no duration.

- Official message (EPUBCheck 5.4.0): The time specified in the clipBegin attribute must not be the same as clipEnd.
- Default severity: Error

## Typical causes

- A clip that was cut to zero length when editing the narration.

## How to fix it

- Correct the times or remove the empty clip.

Message text and severity: EPUBCheck (W3C, BSD-3-Clause). Explanation: EPUBLab.