When I embed an M4A audio file directly into HTML and load the page into Chrome, everything works perfectly. I can select the position in the progress bar and the selected position will be played.
However, I want to perform some preliminary checks when I call the file, so I load the file via PHP. If I then embed this file in the HTML, the playback also works perfectly, but I can no longer jump to the desired position in the progress. Whenever I click in the progress bar, it jumps back to the previous position.
I therefore assume that I have an error in my PHP header:
$file = 'test.m4a';
if(file_exists($file)) {
header('Content-Type: audio/mp4');
header('Content-Disposition: inline;filename="'.$file.'"');
header('Content-length: '.filesize($file));
header('Cache-Control: no-cache');
header("Content-Transfer-Encoding: chunked");
readfile($file);
}
This is my HTML integration (I don't think that the problem is here):
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<audio controls preload="auto" style="width:480px;">
<source src="audio.php" type="audio/mp4"/>
<p>Your browser does not support HTML5 audio.</p>
</audio>
</body>
</html>
In Firefox also the PHP version works perfectly and I can freely choose the playback position, only in Chrome I have the problem.
Can anyone help me? Thank you
