using PHP - how to convert video (avi, mp4, mkv) or even extract audio/video/subtitle

[psrnet00]

{sorry for bad english knowledge}

i need to online convert video from url or direct downloadable site so i can download

files after conversion

i know some website provide online conversion of video and other files length is near 200

mb, but i need to convert more than 700MB

i am very new to PHP, my question is that

is there any way to create this php script or if you know how to do php script than help

me to create this script

or if this script is available than from where i can download this script for free with

tutorial

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