Auto Smart Tone is a powerful tool for automatically bringing your dull, dim, or washed-out videos to life. This feature uses a smart algorithm to modify the brightness and contrast of your video. The Auto Smart tone feature applies a correction to the scenes in your video. In addition to this, you have a controller that you can move around on the frame to fine-tune the results.
Select Apply to apply the auto smart tone to the video clip automatically. It analyzes the clip and divided it into visually similar scenes and a default correction is applied automatically. After auto correcting, if you want to adjust the brightness and contrast controls to make it look like you prefer, select Custom to initiate the Auto Smart Tone UI.
While using the Auto Smart Tone feature, you can select the Learn from this Correction check box. When you select the checkbox, the feature keeps learning from your editing actions on your videos. Each time you use the feature on a video, it places the correction (the controller) on the basis of what corrections you have applied to previous videos. The more videos you correct tonally through this feature, the more intelligent it becomes. The feature uses this learning to provide you with similar corrections on videos of the same type.
To reset the learning that the Auto Smart Tone feature has learned from your usage and actions, in the Preferences dialog, click General > Clean Auto Smart Tone Learning.