I suggest you use the following function instead of your current 'streaming script'. If you pass $filename_output, it will serve the file as download, and it will stream otherwise!
It should work in every browser.
serveFile('/where/my/vid.mp4');
public function serveFile($filename, $filename_output = false, $mime = 'application/octet-stream')
{
$buffer_size = 8192;
$expiry = 90; //days
if(!file_exists($filename))
{
throw new Exception('File not found: ' . $filename);
}
if(!is_readable($filename))
{
throw new Exception('File not readable: ' . $filename);
}
header_remove('Cache-Control');
header_remove('Pragma');
$byte_offset = 0;
$filesize_bytes = $filesize_original = filesize($filename);
header('Accept-Ranges: bytes', true);
header('Content-Type: ' . $mime, true);
if($filename_output)
{
header('Content-Disposition: attachment; filename="' . $filename_output . '"');
}
// Content-Range header for byte offsets
if (isset($_SERVER['HTTP_RANGE']) && preg_match('%bytes=(\d+)-(\d+)?%i', $_SERVER['HTTP_RANGE'], $match))
{
$byte_offset = (int) $match[1];//Offset signifies where we should begin to read the file
if (isset($match[2]))//Length is for how long we should read the file according to the browser, and can never go beyond the file size
{
$filesize_bytes = min((int) $match[2], $filesize_bytes - $byte_offset);
}
header("HTTP/1.1 206 Partial content");
header(sprintf('Content-Range: bytes %d-%d/%d', $byte_offset, $filesize_bytes - 1, $filesize_original)); ### Decrease by 1 on byte-length since this definition is zero-based index of bytes being sent
}
$byte_range = $filesize_bytes - $byte_offset;
header('Content-Length: ' . $byte_range);
header('Expires: ' . date('D, d M Y H:i:s', time() + 60 * 60 * 24 * $expiry) . ' GMT');
$buffer = '';
$bytes_remaining = $byte_range;
$handle = fopen($filename, 'r');
if(!$handle)
{
throw new Exception("Could not get handle for file: " . $filename);
}
if (fseek($handle, $byte_offset, SEEK_SET) == -1)
{
throw new Exception("Could not seek to byte offset %d", $byte_offset);
}
while ($bytes_remaining > 0)
{
$chunksize_requested = min($buffer_size, $bytes_remaining);
$buffer = fread($handle, $chunksize_requested);
$chunksize_real = strlen($buffer);
if ($chunksize_real == 0)
{
break;
}
$bytes_remaining -= $chunksize_real;
echo $buffer;
flush();
}
}
