actually MY PROBLEM is not to download video but watch the video offline I have downloaded videos but is is to difficult to watch with flv palyer as videos fonts are too small to watch My question is how to see such videos wit good reasulation
If you would have said this in the beginning you wouldn't have wasted three other people's time guessing what you really wanted.
This is what you need: http://www.wimpyplayer.com/products/wimpy_standalone_flv_player.html
You can drag the player window out to whatever size you want.
It's a nice FLV player in a single executable file. No installation needed. Either drag-and-drop the FLV file on top of the player or associate the FLV extension with the player's executable.