var precut=""
var nextcut=""
function something_handler() {

mp.utils.write_file('file://'+mp.utils.split_path(mp.get_property('path'))[0]+'cut.py', "import subprocess \nsubprocess.Popen('ffmpeg -hide_banner -ss "+precut +" -y -i "+'"'+"'+(r'"+mp.get_property('path')+"')+'"+'"'+" -t "+nextcut +"  -c:a copy -c:v copy "+'"'+"'+(r'"+mp.get_property('path')+"')+'"+'02.mp4"'+"'"+")")
}

function endthing_handler(){
nextcut= mp.get_property("playback-time")

}
function delthing_handler(){

precut=    mp.get_property("playback-time")
}

mp.add_key_binding("c", "something", something_handler)
mp.add_key_binding("x", "endthing", endthing_handler)
mp.add_key_binding("z", "delthing", delthing_handler)