Hello All,
I am using this script for watermark on video
<?php
exec('mencoder vid.mp4 -o b.mp4 -ovc -oac xvid -xvidencopts fixed_quant=7 pcm -sub "mark.srt" -font "verdana.ttf" -subpos 98');
?>
But it change quality of video, I dont want change anything in video like quality, audio bit rate...