I'm using flowplay (flash) for embedded audio/video.
Initially I was using html5 w/ flowplay as fall back, but I stopped
because flowplay is better than html5 on browsers that support html5.
Anyway - I also am making direct links to the media available as mp4/ogm
and mp3/ogg.
The problem is browsers would often try to handle the media themselves
instead of letting it download - so I made a wrapper php script that
sends the right headers -
header("Content-type: " . $mime);
header("Content-Disposition: attachment; filename=" . $thispage);
header("Content-Transfer-Encoding: binary");
Browsers now do the right thing and let the media download, but there is
no estimate on when the download the will complete.
I'm guessing I need to send a header with the content length for them to
do that?
This is the function I use (stolen from web) to send the media:
define('CHUNK_SIZE', 1024*1024);
function readfile_chunked($filename, $retbytes = TRUE) {
$buffer = '';
$cnt =0;
// $handle = fopen($filename, 'rb');
$handle = fopen($filename, 'rb');
if ($handle === false) {
return false;
}
while (!feof($handle)) {
$buffer = fread($handle, CHUNK_SIZE);
echo $buffer;
ob_flush();
flush();
if ($retbytes) {
$cnt += strlen($buffer);
}
}
$status = fclose($handle);
if ($retbytes && $status) {
return $cnt; // return num. bytes delivered like readfile() does.
}
return $status;
}
Can someone suggest an improvement that will send the content length?
Looking around I see this used with images:
$length = strlen($imagedata);
header('Content-Length: '.$length);
Is that good enough?
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