For the full-paper option, make the presentation up to 20 minutes, for posters 5minutes.
The embeddable HTML fragment for the video and the URL link for the slides that you provide is to be used as you post it.
Make sure it works till October 20th and that it is public. Also, make sure your audio is working.
e.g.
example video HTML fragment (we ask for the entire fragment starting with <iframe ...)
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<iframe width="560" height="315" src="
https://www.youtube.com/embed/PqEjkM8Hkqw" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
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example URL link to PDF
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https://www.tug.org/twg/mactex/tutorials/ltxprimer-1.0.pdf-------------------------------------------------------------------------------------------------------------------------------------------