I got my problem solved. If anyone is having the same issue i recommend commenting the following line in core.php file line 1406
function ffmpegcommandExists() {
$options = get_option(‘cvg_settings’);
$command = escapeshellarg($options[‘cvg_ffmpegpath’]);
—–> // exec($command, $output, $return);
if ($return <= 1) {
return true;
}
if you do this than ffmpeg wont be checked thus not giving any error