Streaming video content from RAR archives

Question

I'm trying to stream video content from a RAR archive.

and it goes fine for the first seconds, but the problem is that the stream does not support fseek, so the client can't ask for more data, or seek in the video.

(http://www.php.net/manual/en/rarentry.getstream.php)

is it possible to get this idea working?

<?php
// Report all PHP errors
error_reporting(E_ALL);
ini_set('display_errors', '1');

// Open rar archive
$rar_file = rar_open('test.rar');
if ($rar_file === false)
    die("Failed to open Rar archive");

// Get video file in archive
$entry = rar_entry_get($rar_file, 'video.mkv');
if ($entry === false)
    die("Failed to find such entry");


header('Content-Type: application/octet-stream');
header('Content-Disposition: inline; filename="video.mkv"');

// Seek
$seek_start = 0;
$seek_end = -1;
$fs = $entry->getPackedSize();

if (isset($_SERVER['HTTP_RANGE']) || isset($HTTP_SERVER_VARS['HTTP_RANGE'])) {

    $seek_range = isset($HTTP_SERVER_VARS['HTTP_RANGE']) ? substr($HTTP_SERVER_VARS['HTTP_RANGE'], strlen('bytes=')) : substr($_SERVER['HTTP_RANGE'], strlen('bytes='));
    $range = explode('-', $seek_range);

    if ($range[0] > 0) {
        $seek_start = intval($range[0]);
    }

    $seek_end = ($range[1] > 0) ? intval($range[1]) : -1;


    header('HTTP/1.0 206 Partial Content');
    header('Status: 206 Partial Content');
    header('Accept-Ranges: bytes');
    header("Content-Range: bytes $seek_start-$seek_end/" . $fs);
}

if ($seek_end < $seek_start) {
    $seek_end = $fs - 1;
}
$cl = $seek_end - $seek_start + 1;

header('Content-Length: ' . $cl);
ob_flush();


// Get file stream
$stream = $entry->getStream();
rar_close($rar_file); //stream is independent from file

if ($stream === false)
    die("Failed to obtain stream.");

fseek($stream, $seek_start);
// Start stream
while (!feof($stream)) {
    set_time_limit(0);
    print(fread($stream, 8192));
    flush();
    ob_flush();
}

fclose($stream);
?>

Answer 1

I later found out that fseek is not supported in rar archives in PHP, as in not implemented. You could easily do this in python, thats why i wanted to try in PHP.