Hi using this php code any one can convert any video file to flv.

Requirements : ffmpeg software

You can download this software from

http://www.videohelp.com/tools/ffmpeg

Code :

$curdir = define (‘FULL_PATH’, dirname(__FILE__).’/');

if(strstr($_SERVER['SERVER_SOFTWARE'],”Win32″))
$ffmpeg_format = $curdir.”ffmpeg.exe -y -i %s %s”;
else
$ffmpeg_format = “LD_LIBRARY_PATH=. “.$curdir.”ffmpeg -y -i %s %s > /dev/null 2>&1″;

$ret_value = 0;
// prepare ffmpeg command

$ffmpeg_command = sprintf($ffmpeg_format, $video_file_name, $flv_name);

//echo $ffmpeg_command;

if (system($ffmpeg_command, $ret_value) === FALSE || $ret_value != 0) {
// ffmpeg was failed
return false;
}
return true;

Where this php page directory should ffmpeg.exe directory

By the help of flvtool2 mencoder software file conversion you can follow

http://reazulk.wordpress.com/2008/01/24/easy-way-to-convert-a-no-flash-movie-to-flash/