capture.php

<?php

/*

Refer to gstream-pipe.txt to more capture devices

bmdcapture -m 10 -V 3 -A 2 -F nut -f pipe:1 | avconv -re -i - -c:v libx264 -profile:v baseline -preset medium -level 30 -aspect 16:9 -s 1280x720 -vb 3500K -r 25 -g 48 -crf 10 -keyint_min 48 -sc_threshold 0 -c:a libvo_aacenc -ab 48k -ar 48000 -ac 2 -tune zerolatency -f flv "rtmp://localhost:1935/myapp/stream"

*/
$hostname = gethostbyaddr($_SERVER['SERVER_ADDR']);
#echo $hostname;


 if($_GET == null){
 //  echo "No GET variables";
    $encoder = "pid";
    }
 else {
 // print_r($_GET);

# Video Preview Start - Decklink Minirecorder parameters

$encoder = $_GET["encoder"];
// $mode = $_GET["mode"];
// $vmode = $_GET["vmode"];
// $amode = $_GET["amode"];
// $pid = $_GET["pid"];
 }

# Video Broadcast Parameters

// $streamapp = $_GET["app"];
// $streamurl =$_GET["url"];
// $streamname = $_GET["name"];

switch($encoder) {
    case "avstart":
    # Debug Vars
        $pidArr = null;
        $mode = 10;
        $vmode = 13 ;
        $amode = 0;
        $cmd = "bmdcapture -m ". $mode ." -V " . $vmode . " -A ". $amode ." -F nut -f pipe:1 | avconv -re -i - -c:v libx264 -profile:v baseline -preset medium -level 30 -aspect 16:9 -s 1280x720 -b:v 200k -r 25 -g 48 -keyint_min 48 -sc_threshold 0 -c:a libvo_aacenc -ab 32k -ar 48000 -ac 2 -tune zerolatency -f flv rtmp://" . $hostname . ":1935/myapp/stream >/dev/null 2>/dev/null & echo $!";

        exec($cmd,$pidArr);

        $pid = $pidArr[0];
        echo $pid;
        break;
    case "pid":
        $pid = null;
        $result = shell_exec(sprintf("ps -C bmdcapture | grep bmdcapture", $pid));
    //    print_r($result);
        $pid = strstr($result," ?",true);
        if ($pid == ""){echo "stopped";}
        else {
        echo "runned";
        };
        break;
    case "start":
        echo "starting streaming";
        break;
    case "stop":
    //    $pid = null;

// print_r ($pidArr);
 //       $result = shell_exec(sprintf("ps ax |grep bmdcapture", $pid));
  //      $pid = strstr($result," ",true) ;
//        echo $pid;

}

?>