Youtube embedded videos are removed

[anthony-foulfoin]

The youtube videos are embedded with an <iframe>, but the videos iframes are always removed from the resulting articles. For instance on: http://next.liberation.fr/culture-next/2017/11/24/screenshot-vape-wave-6-days-alphonse-president_1612047?xtor=rss-450

The following video has been wiped:

<p><iframe width="100%" src="https://www.youtube.com/embed/lGL7RgHn5f0" frameborder="0" allowfullscreen="" data-aspect-ratio="0.5625" data-responsive="1"></iframe></p>

I tried to remove iframe from tagsToSkip and to add it in tagsOfMedia with no success. I can't figure out where the iframe nodes are removed, even with the debug mode

[Tjatse]

Youtube is being blocked from China, and I can not test this issue.
I'll figure it out somehow...