How to disable output buffering in PHP

I wrote a simple relay script that connects to a web camera and reads from the socket, and outputs this data using the print function. The data is MJPG data with boundaries already setup. I just output the data that is read.

The problem is PHP seems to be buffering this data. When I set the camera to 1 FPS, the feed will freeze for 7-8 seconds, then quickly display 8 frames. If I set the resolution to a huge size, the camera move at more or less 1 frame per second. I assume then some buffering is happening (since huge sizes fill the buffer quickly, and low sizes don't), and I can't figure out how to disable this buffering. Does anyone know how to?

Code:

ignore_user_abort(false);



$boundary = "myboundary";



//Set this so PHP doesn't timeout during a long stream

set_time_limit(0);



$socketConn = @fsockopen ("192.168.1.6", 1989, $errno, $errstr, 2);

if (!$socketConn)

exit();

stream_set_timeout($socketConn, 10);

fputs ($socketConn, "GET /mjpeg HTTP/1.0\r\n\r\n");



//Setup Header Information

header("Cache-Control: no-cache");

header("Cache-Control: private");

header("Pragma: no-cache");

header("Content-type: multipart/x-mixed-replace; boundary=$boundary");



@ini_set('implicit_flush', 1);

for ($i = 0; $i < ob_get_level(); $i++)

ob_end_flush();

ob_implicit_flush(1);



stream_set_blocking($f2, false);



//Send data to client

while (connection_status() == CONNECTION_NORMAL)

{

    $chunk = fread($socketConn, 128);

    print $chunk;   

}



fclose($socketConn);