Create EPUB3 file with audio embedded

[andrew-manger]

I love how many options for export this program has! Storyteller is a program that combines audiobooks with ebooks so you can transition seamlessly between reading and listening. It syncs the audio with the ebook and highlights the text as it is read. For example, you can listen in while in the car, but when you are sitting down, you can pick up in the ebook where you left off in the audio. This is done by layering the audio into the epub file. Rather than generate the audiobook with this tool and then run it through Storyteller, would it be possible to just sync the audio with the ebook when processing and export both the EPUB3 audio-embedded ebook as well as a m4b file?

[ROBERT-MCDOWELL]

not sure it's possible to embed a so big audio file in an epub3. I had already big waste of time and hassle to sync our little textfield since html5 and audio track are completely buggy on all web browser engine when the audio is more than 100MB so I had to code the whole process from scratch with a timestamp and ontimeupdate event with a fetch() text download before to start in javascript.
and epub1/2/3 is not more than html/xhtml language....