hls-stream-from-file.php

<?php
/*
composer.json
{
    "require": {
        "chrisyue/php-m3u8": "^1.2"
    }
}
*/
require __DIR__ . '/vendor/autoload.php';

$ts = isset($_REQUEST['ts']) ? intval($_REQUEST['ts']) : 0;
$offset = time() - $ts;

if ($ts == 0) {
	die();
}

define('PLAYLIST_PATH', __DIR__ . '/index.m3u8');
define('MAX_SIZE', 10000);
header("Content-type: application/x-mpegURL");

$content = file_get_contents(PLAYLIST_PATH);
$parser = new \Chrisyue\PhpM3u8\Parser();
$data = $parser->parse($content);
$pl = $data->getPlaylist();

$resultSegments = [];
$resultSize = 5;
$timeLeft = 0.0;
$i = 0;

while ($pl->valid()) {
	if ($i > MAX_SIZE) {
		break;
	}

	$timeLeft += $pl->current()->getDuration();

	if ($timeLeft >= $offset) {
		$resultSegments[] = $pl->current(); 
	}

	if (count($resultSegments) >= $resultSize) {
		break;
	}

	$i++;
	$pl->next();
}

echo '#EXTM3U' . PHP_EOL;
echo '#EXT-X-PLAYLIST-TYPE:LIVE' . PHP_EOL;
echo '#EXT-X-VERSION:3' . PHP_EOL;
echo '#EXT-X-TARGETDURATION:' . $data->getTargetDuration() . PHP_EOL;
echo '#EXT-X-MEDIA-SEQUENCE:' . ($i - count($resultSegments)) . PHP_EOL;

foreach ($resultSegments as $segment) {
	echo '#EXTINF:' . $segment->getDuration() . ',' . PHP_EOL;
	echo $segment->getUri() . PHP_EOL;
}