The 'sphinxcontrib.youtube' extension is severely broken (last PyPI release only works on Python 2, current github master works on 3 but forgets to include https: at the beginning of the URL so doesn't show the video, and also causes any non-html build to error out so we wouldn't be able to have pdf export any more) so this does not use it. Instead, the youtube embed iframe is directly added as a .. raw:: html directive, which just gets ignored by make latexpdf.
The 'sphinxcontrib.youtube' extension is severely broken (last PyPI release only works on Python 2, current github master works on 3 but forgets to include
https:at the beginning of the URL so doesn't show the video, and also causes any non-html build to error out so we wouldn't be able to have pdf export any more) so this does not use it. Instead, the youtube embed iframe is directly added as a.. raw:: htmldirective, which just gets ignored bymake latexpdf.