PHP实时视频流传输方案探索

use RatchetMessageComponentInterface;
use RatchetConnectionInterface;

class VideoStream implements MessageComponentInterface {
    protected $clients;

    public function __construct() {
        $this->clients = new SplObjectStorage;
    }

    public function onOpen(ConnectionInterface $conn) {
        // Add new client
        $this->clients->attach($conn);
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        // Get video stream data using FFmpeg
        $videoData = exec('ffmpeg -i video.mp4 -c:v libx264 -presets ultrafast -tune zerolatency -an -f mpegts -');

        // Broadcast video stream to all clients
        foreach ($this->clients as $client) {
            if ($from !== $client) {
                $client->send($videoData);
            }
        }
    }

    public function onClose(ConnectionInterface $conn) {
        // Remove client
        $this->clients->detach($conn);
    }

    public function onError(ConnectionInterface $conn, Exception $e) {
        echo "Error: " . $e->getMessage();
        $conn->close();
    }
}

// Start WebSocket server
use RatchetServerIoServer;
use RatchetHttpHttpServer;
use RatchetWebSocketWsServer;

$server = IoServer::factory(
    new HttpServer(
        new WsServer(
            new VideoStream()
        )
    ),
    8080
);

$server->run();

// Set headers for chunked encoding
header("Transfer-Encoding: chunked");
header("Content-Type: video/mp4");

// Get video stream data using FFmpeg
$videoData = exec('ffmpeg -i video.mp4 -c:v libx264 -presets ultrafast -tune zerolatency -an -f mpegts -');

// Send video stream data using chunked encoding
$chunkSize = 1024 * 10; // 10 KB
for ($i = 0; $i < strlen($videoData); $i += $chunkSize) {
    echo sprintf("%x
%s
", $chunkSize, substr($videoData, $i, $chunkSize));
    flush();
}

// Send last chunk and finish chunked encoding
echo "0

";