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EPUBCheck · Images, audio and media overlays

MED-009

Updated:

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.

The official message

The time specified in the clipBegin attribute must not be the same as clipEnd.

Default severity
Error. The EPUB breaks a rule of the specification and is invalid. Stores and Send to Kindle may reject it, and EPUBCheck exits with status 1.
EPUBCheck version
5.4.0

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.

Terms used here

Other MED messages

  • MED-004 Image file header may be corrupted.
  • MED-003 Picture "img" elements must reference core media type resources, but found resource "…" of type "…".

Message text and severity from EPUBCheck 5.4.0 (W3C, BSD-3-Clause). Explanation by EPUBLab.

FAQ

What does EPUBCheck MED-009 mean?

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.

Is MED-009 an error?

MED-009 is reported as error by default. The EPUB breaks a rule of the specification and is invalid. Stores and Send to Kindle may reject it, and EPUBCheck exits with status 1.