sample: "sample.mp4"
output: "processed.mp4"
videostream: "1"
fontsize: "24"
logosize: "0.25"
markbackground: "black@0.0"
showinfos: "1"
showlogo: "1"
mark: "sample.gif"
date: "1"
dateformat: "%x"
time: "1"
timezone: "1"
timeformat: "%X"
location: "Preference text"
infosposition: "2"
logoposition: "3"