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POWhere is the bottleneck in mjpeg broadcasting?
 

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  1. POWhere is the bottleneck in mjpeg broadcasting?
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    <p>I'm streaming mjpeg with PHP just like this</p> <pre><code>&lt;?php //example /cli/watch.php?i=0&amp;j=200 function get_one_jpeg($i) { $path = "img"; //$f = fopen("$path/$i.jpg", "rb"); return file_get_contents("$path/$i.jpg"); } ini_set('display_errors', 1); # Used to separate multipart $boundary = "my_mjpeg"; # We start with the standard headers. PHP allows us this much //header("Connection: close"); header("Cache-Control: no-store, no-cache, must-revalidate, pre-check=0, post-check=0, max-age=0"); header("Cache-Control: private"); header("Pragma: no-cache"); header("Expires: -1"); header("Content-type: multipart/x-mixed-replace; boundary=$boundary"); # From here out, we no longer expect to be able to use the header() function print "--$boundary\n"; # Set this so PHP doesn't timeout during a long stream set_time_limit(0); # Disable Apache and PHP's compression of output to the client @apache_setenv('no-gzip', 1); @ini_set('zlib.output_compression', 0); # Set implicit flush, and flush all current buffers @ini_set('implicit_flush', 1); for ($i = 0; $i &lt; ob_get_level(); $i++) ob_end_flush(); ob_implicit_flush(1); # The loop, producing one jpeg frame per iteration $i = $_GET['i']; $j = $_GET['j']; while ($i &lt;= $j) { # Per-image header, note the two new-lines print "Content-type: image/jpeg\n\n"; # Your function to get one jpeg image print get_one_jpeg($i); # The separator print "--$boundary\n"; # Sleeping for 0.1 seconds for 10 frames in second usleep(100000); $i++; } ?&gt; </code></pre> <p>But if I set a big range of images, for example, from 0 to 300, in indefinite time browser just stop showing.</p> <p>It's not a specific frame or moment of time, and shows in different browsers, so I think that the causer of it is Apache.</p> <p>I tried it under Apache 2.2.9 and 2.2.21 and get the same result. Under IIS Express it works even worse.</p> <p>What problem it can be?</p>
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    1. USSaito
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    1. COPlease do not use `$_GET` vars directly when including files, it could lead to some serious security issues!
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    2. COThanks for your remark, I use this way just for test
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