Video Audio does not play on EPUB file export

[zappavin1]

Hello

I am embeding a video clip into a document and then exporting as an epub fixed layout.  When I check the file after export the video plays but the audio does not.  When I preview the clip in Indesign everything works fine.  The video is an mp4 video exported out of premier pro.  I am using Indesign 16.4.2.

Thank you for any insight you could give me.

[Laubender]

What is your EPUB viewing application?

Does the audio of the video work when you Publish Online the document?

Regards,
Uwe Laubender

( ACP )

[zappavin1]

I am viewing the fil on Apple Books.  I also have other audio only files embedded and they work fine. 

[Frans v.d. Geest]

Mp4 but with which encoding?

[zappavin1]

Quicktime, Adobe Stock HD, 48000 Hz

[zappavin1]

Also tried H.264

[zappavin1]

When I Publish Online I get the same error.  No audio from the video.

[Laubender]

I would also try to test the FXL EPUB file with Thorium Reader and Calibre e-pub viewer.

Also test on a Windows machine with Thorium Reader and Calibre e-pub viewer.

Could well be, that a new bug was introduced with Apple Books.

I cannot test that, because I am on Windows 10.

Regards,
Uwe Laubender

( ACP )

[zappavin1]

Does the same in Cabre.  No audio.

[Laubender]

And as I already said: Also try InDesign's Publish Online feature.

Regards,
Uwe Laubender

( ACP )

[BobLevine]

Does it play properly in other applications? Try a quick export to Publish Online.

I would also try exporting from 17.2.1. You never know about these things.

[zappavin1 · Accepted solution]

Thank you all for the great insight!  I was finally able to get it to work by re-exporting the video and then re embedding it.  I did not change any of the export settings(H.264, 48000Hz).  This seemed to fix the problem.