Updating the ffmpeg-php-class

[arduino-uno]

Hi, I add new functions, there are subtitles filter function & drawtext filter function
So we can can burn text subtitles or create a Text on a video easily 😄

and i also made some changes to the input function & the output funtion for multiple inputs.
Example: ffmpeg -i input1.mp3 -i input2.mp3 -i input3.mp3 -filter_complex "concat=n=3:v=0:a=1" -vn -y input.m4a

Changes in input function at line 241 & 242:

// set $append parameter into true for multiple inputs
$this->set('i', '"'.$file.'"', true);

Changes in output function at line 149 & 155:
$val = join( ' ' , $val );

And add double quotes for each option

$items[] = $this->addquotes( $item . "=" . $val );

You can ignore, edits or use 'em if necessary 😄

Thanx