Originally posted by afterdawn guide:

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Compress video with high quality adaptive error compensation: Adaptive Error Compensation exists to reduce the number of noticeable artifacts on the output video. During video compression small errors and artifacts occur, this is not just with DVD Shrink either, it is just one of those bad things about video compression. Adaptive Error Correction was added to DVD Shrink to help reduce the number of video artifacts on the output. With this setting switched on, DVD Shrink will compare the original and the compressed frames to check if any noticeable artifacts have been produced. If they have, it will compensate for them accordingly, hence the name "Adaptive Error Compensation".

There are four option here to choose from, Maximum Smoothness, Smooth, Sharp and Maximum Sharpness. Sharp is the default setting. Basically, with sharp selected, DVD Shrink will try to preserve the sharpness of the original video stream. This is vice versa with Smooth. The Maximum Options will be more aggressive. The problem with choosing is choosing one may be at the expense of the other (choosing Sharp may be at the expense of smoothness or vice versa). The choice between both, is up to you. Think about it because in my experience, using Adaptive Error Compensation greatly improves the output quality on most if not all backups. However, as mentioned, the process will take longer with this selected. It is really up to you.

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