php MJPEG串流轉出


function get_one_jpeg(){
$camurl="串流"; // Mjpeg URL

$f = fopen($camurl, "r");
$r = "";

if($f) {
    // unless 1 frame raw read.
    while (substr_count($r, "\xFF\xD8")<2) $r.=fread($f, 8192);

// clip frame out raw
$start = strpos($r, "\xFF\xD8");
$end = strpos($r, "\xFF\xD9", $start)+2;
$frame = substr($r, $start, $end-$start);

return  $frame;

# Used to separate multipart
$boundary = "my_mjpeg";

# We start with the standard headers. PHP allows us this much
header("Cache-Control: no-cache");
header("Cache-Control: private");
header("Pragma: no-cache");
header("Content-type: multipart/x-mixed-replace; boundary=$boundary");

# From here out, we no longer expect to be able to use the header() function
print "--$boundary\n";

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

# Disable Apache and PHP's compression of output to the client
@apache_setenv('no-gzip', 1);
@ini_set('zlib.output_compression', 0);

# Set implicit flush, and flush all current buffers
@ini_set('implicit_flush', 1);
for ($i = 0; $i < ob_get_level(); $i++)

# The loop, producing one jpeg frame per iteration
while (true) {
    # Per-image header, note the two new-lines
    print "Content-type: image/jpeg\n\n";

    # Your function to get one jpeg image
    print get_one_jpeg();

    # The separator
    print "--$boundary\n";
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