How can one troubleshoot and debug issues with the video display when using mencoder in PHP?

To troubleshoot and debug issues with the video display when using mencoder in PHP, you can start by checking the input video file format, ensuring that the correct codec is being used, and verifying that the output file path is correct. Additionally, you can enable error reporting to see any specific error messages that may help pinpoint the issue.

<?php

// Enable error reporting
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Your mencoder code here

?>