I created more lower thirds for you, my readers! These are .tif files with the background transparent. You can alpha them over video and get the smooth gradient edge! These are static lower thirds, royalty free so feel free to use them in your productions. In Movie Edit Pro just drop them on the time line under your video and they will show through. They are 720x480 for standard resolution but you can stretch them to 16:9 if you wish. Or just tuck them to one side. Plus use key frames to move them on or off screen!
Right-click on this link and "save target as" or "save link as". Then download the ltrtrds2.zip file. The lower thirds are in the zip file.
These lower thirds can be used with any video editor that has alpha channel capabilities.
Here is a video showing the lower thirds in action: