Many of us will be having an android phone or tablet, iPhone or ipad, HD LED tv. If you just copy the raw video format like high resolution mkv or any other formats directly into your mobile or tablet devices you may find that the playing of the video is not smooth as you have viewed the same video on the desktop, some time there will be picture distortion or audio may be lagging. For HD LED TV resolution is not a problem but the format of the video is problem as some TV take only specific formats. To solve