I use AutoGK. Its a free software (Sony Vegas is not). Also, for all my other converting (audio and video) needs, I use SUPER, from eRightSoft. It can literally do any format to another, with other options like cropping the input video, changing the aspect ratio, video/audio bitrate, which encoder you wish to use for the selected output container. AutoGK and SUPER are both freeware. http://www.autogk.me.uk/index.php http://www.erightsoft.com/SUPER.html