index.js
function sync(os) {
  var stdio = os.stdio===undefined? STDIO:os.stdio;
  return cp.execSync(command(os), {stdio});
}
function sync(os) {
  var stdio = os.stdio===undefined? STDIO:os.stdio;
  return cp.execSync(command(os), {stdio});
}
function sync ( os ) { var stdio = os . stdio === undefined ? STDIO : os . stdio ; return cp . execSync ( command ( os ) , { stdio } ) ; }
Invoke "ffmpeg" synchronously.
@param {object} os ffmpeg options.
Invoke ffmpeg synchronously .