sS ffmpeg_cutVideo(File inVideo, File outVideo, double start, double end, O... _) {
  optPar bool noOverwrite;
  ret ffmpeg((noOverwrite ?  "-n " : "-y ") + "-i " + platformQuote(inVideo) + " -ss " + start + " -t " + (end-start) + " " + platformQuote(mkdirsForFile(outVideo)));
}