To: michael@lodman.com
Hello,
I wonder if everything else except the 'jerky' picture is alright with the output video? I mean, the picture quality, picture size and so on. If they are and the only trouble is the picture jitter issue, then it is most likely the frame rate change in the output video as compared to the original one (the input has, for instance, 25 frames per second and the output is 30 frames per second). In this case the resulting video can actually become jerky as additional frames are added to change the frame rate.
You can try and avoid this leaving the Archos profile 'Frame Rate' value as 'Original'. Select the format clicking the appropriate button ('To AVI', for example) and then click the 'Edit Profile' button.
In the opened window make sure that the 'Frame Rate' is set to 'Original' - the attached screenshot will show where you can find that.
The same can be done for the other profiles.
If this does not help, we will need an example of your files to solve the issue.
Best regards.