Actually these videos (https://instantview.telegram.org/contest/espn.com.ar/template18/issue1/) can be supported. When you scroll down the page, it generate ajax-request to fetch next article from server, and responce contains full next article with all media embeds.

If we make same request for article where we expect to see video, we got the result we need to display such pages in IV.
see:

https://instantview.telegram.org/contest/espn.com.ar/template28/?url=http%3A%2F%2Fwww.espn.com.ar%2Ftenis%2Fnota%2F_%2Fid%2F5268773%2Fimpacto-londero-vencio-a-pella-y-gano-su-primer-titulo-en-cordoba

https://instantview.telegram.org/contest/espn.com.ar/template28/?url=http%3A%2F%2Fwww.espn.com.ar%2Ffutbol%2Fmundial%2Fnota%2F_%2Fid%2F5251472%2Fel-amistoso-de-argentina-con-marruecos-cambio-de-sede