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Old 01-04-2014, 02:38 PM   #1
odedta
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ePub SMIL Validation
Hello,

I have created a sample ePub with a media overlay. I would like to get it validated using EpubCheck as well but I seem to get an error that I don't know how to fix.
Error:
Quote:
ERROR: ePubMediaOverlaysExample.epub/OEBPS/content.opf(20,13): assertion failed: global media:duration meta element not set
I have attached the sample.

Thanks!
Attached Files
File Type: epub ePubMediaOverlaysExample.epub (598.2 KB, 140 views)
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Old 01-04-2014, 05:12 PM   #2
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You need to add:

Code:
<meta property="media:duration">0:04:12.000</meta>
to your content.opf.

See "3.5.2 Media Overlays Metadata Vocabulary": http://www.idpf.org/epub/30/spec/epu...ckage-metadata where it says:

Quote:
Description: The duration of the entire presentation or of a specific Media Overlay. The specified durations account for the audio clips known at authoring time, and so exclude live streaming from external resources and speech synthesis.
...
Cardinality: Exactly one for the Publication and for each Media Overlay.
Last edited by AlPe; 01-04-2014 at 05:16 PM.
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Old 01-05-2014, 05:16 AM   #3
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I see, thank you!
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Old 01-05-2014, 09:17 AM   #4
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You are welcome. You can find stuff related to reflowable, EPUB3 Audio-eBooks with Media Overlays here: http://www.readbeyond.it/
Last edited by AlPe; 06-12-2015 at 06:16 AM.
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