<?php
function PutMovie($file) {
    header("Content-type: video/mp4");
    header("Accept-Ranges: bytes");
     
    $size = filesize($file);
    if(isset($_SERVER['HTTP_RANGE'])){
        header("HTTP/1.1 206 Partial Content");
        list($name, $range) = explode("=", $_SERVER['HTTP_RANGE']);
        list($begin, $end) =explode("-", $range);
        if($end == 0) $end = $size - 1;
    }
    else {
        $begin = 0; $end = $size - 1;
    }
    header("Content-Length: " . ($end - $begin + 1));
    header("Content-Disposition: filename=".basename($file));
    header("Content-Range: bytes ".$begin."-".$end."/".$size);
 
    $fp = fopen($file, 'rb');
    fseek($fp, $begin);
    while(!feof($fp)) {
        $p = min(1024, $end - $begin + 1);
        $begin += $p;
        echo fread($fp, $p);
    }
    fclose($fp);
}
PutMovie("1.mp4");
?>

http.ServeFile(w, r, "/webserver/1.mp4")