Add YouTube and Vimeo thumbnails in PDF

_static/latex/preamble.tex

@@ -23,3 +23,6 @@
 
 \let\oldtabular\tabular
 \renewcommand{\tabular}{\footnotesize\oldtabular}
+
+\newcommand{\sphinxcontribyoutube}[3]{\begin{figure}\sphinxincludegraphics{{#2}.jpg}\caption{\url{#1#2#3}}\end{figure}}
+\newcommand{\sphinxcontribvimeo}[3]{\begin{figure}\sphinxincludegraphics{{#2}.jpg}\caption{\url{#1#2#3}}\end{figure}}