I think it would help if you were to tell us to what format you are exporting your footage. If your output is to DVD then there will be a noticeable loss of quality when compared with your original footage; it is a "feature" of the DVD standard!
It might also be helpful if you could explain a liitle more about what you mean by "video jitter". In my mind this suggests a certain type of "visual inconsistency", for want of a better term, but may not be what you are referring to!
When you say you get video jitter, do you mean you used Movie Editor Pro Plus to edit, and then create an mp4 of your video, or a dvd containing your finished item, or are you experiencing jitter as you preview your video in the programs preview window, or perhaps you are using another player to play your video and it is here you are experiencing jitter, more details would help.
Also did you come across this screen whilst burning your dvd, and which settings did you use.
Also, if you created a dvd of your video, have you used either of these settings, one of shich relates to flickering.
It is also important to use either pal or ntsc, as the hz involved are different and can certainly cause flickering, not sure about jittering though, click the image to enlarge it.
Here are more advanced settings for rendering your finished project to dvd, look at all three images I posted and you will see there are a lot of settings that can influence your finished product, whether it be for better or for worse.
If you are new to this software, you should import a video of the quality you consider to be good, do not edit it at all, just go on and render it to dvd noting the settings you use, and compare it to the origonal video, this way you will be able to find the best possible settings, and record your results for future rendering. It is also a very good idea to import and finish your video in the same format and size, as any alterations made will always affect your finished product, this is always the case no matter what software you use, unless you have a programmer and a mathamatician to write algorithyms for you.