ffmpeg/mencoder help

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 etc. I just want that script for watermark..

Please tell me how can i do this.

Thanks in advance

try

Try this one. This might help. Goodluck

links:

https://transloadit.com/demos/video-encode/watermarking
http://www.idude.net/index.php/how-to-watermark-a-video-using-ffmpeg/