How to convert video in .flv format and grab the screenshots

Please tell me how to grab screen shot and convert the video in flv
format

Please explain you requirement a little more.

Please tell me how to grab screen shot and convert the video in flv
format

If you meant to say "how do I extract a screen shot from an FLV video" then take a look at this: http://pjkh.com/articles/extracting-thumbnail-from-flv.html

Otherwise I dunno.

-philip