tikzvid.sty

\ProvidesPackage{tikzvid}

\newwrite\tikzvidfile
\begingroup\lccode`!=`\\\lowercase{\endgroup\def\@backslashchar{!}}

% \tikzvidtarget{myid}
\newcommand{\tikzvidtarget}[1] {run:\jobname-#1.tikzvid-sh}

\newcommand{\tikzvidtargetboth}[3] {
   \openout\tikzvidfile=\jobname-#1.tikzvid-sh
   \write\tikzvidfile{pwd}
   \write\tikzvidfile{sh `dirname $0`/\jobname-#2.tikzvid-sh &}
   \write\tikzvidfile{sh `dirname $0`/\jobname-#3.tikzvid-sh &}
   \closeout\tikzvidfile
}

% \tikzvidplayat{myid}{mynode}{relative/path/to/movie.mp4}{args}
\newcommand{\tikzvidplayat}[4] {
   \openout\tikzvidfile=\jobname-#1.tikzvid-sh
   \write\tikzvidfile{python `dirname $0`/play.py \@backslashchar}
   \node[inner sep=0pt] at (#2.north east) {\pdfsavepos\write\tikzvidfile{ --ne-x=\the\pdflastxpos \space --ne-y=\the\pdflastypos \space \@backslashchar}};
   \node[inner sep=0pt] at (#2.south west) {\pdfsavepos\write\tikzvidfile{ --sw-x=\the\pdflastxpos \space --sw-y=\the\pdflastypos \space \@backslashchar}};
   \write\tikzvidfile{ --video=#3 #4}
   \closeout\tikzvidfile
}