ePub SMIL Validation

odedta · 01-04-2014, 01:38 PM

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!

AlPe · 01-04-2014, 04:12 PM

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.

odedta · 01-05-2014, 04:16 AM

I see, thank you!

AlPe · 01-05-2014, 08:17 AM

You are welcome. You can find stuff related to reflowable, EPUB3 Audio-eBooks with Media Overlays here: http://www.readbeyond.it/

01-05-2014, 08:17 AM	#4
AlPe Digital Amanuensis Posts: 727 Karma: 1446357 Join Date: Dec 2011 Location: Turin, Italy Device: Several eReaders and tablets	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 05:16 AM.

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01-05-2014, 04:16 AM	#3
odedta Addict Posts: 398 Karma: 96448 Join Date: Dec 2013 Device: iPad	I see, thank you!

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