Hello
I have a question about a video that I embedded in the introduction of my EPUB3 ebook "Tape Mark 3":
https://edgedpub.com/sample_work_6.php
The EPUB-Checker shows me 2 errors (see attachment) that are related to the video on line 173 of the file introduction.xhtml.
<div>
<iframe width="560" height="315" src="https://www.youtube.com/embed/8i7uFCK7G0o" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen=""></iframe>
</div>
I looked for explanations about Error RSC-006 regarding the EPUB container.
On the web page
Anatomy of an EPU3 file I read that the file container.xml is in the folder META-INF.
I have 3 questions:
1) Is there a problem with the iframe?
2) What does it mean that I have to "locate the resource in the EPUB container"?
3) How do I insert the video in the manifest? How do I write this line of code for the video?
<item id="..." href="..." media-type="video/..."/>
Thank you for your help.
Daniele