By default, the Stabilizer works in Progressive (frame mode). Select Interlaced from the Source Option box mode when working with interlaced images, or with images that display a lot of field jitter. In Interlaced (field) mode, the Stabilizer sets two keyframes for every frame: one for the even field and one for the odd field, and an asterisk appears in the image viewer's current frame display to indicate the second field for each frame.
Normally, you use the Stabilizer with the Fixed Reference button enabled. Throughout the analysis, the tracker box follows the movement of the reference point that you specified in the reference frame.
You may want to track a pattern that changes considerably from the first frame to the last frame in the clip. For example, the pattern may be rotating or may change size or shape. In this case, disable the Fixed Reference button. The reference point is then updated in each frame. In each frame of the analysis, the Stabilizer looks for the reference point from the previous frame.
Use these options in the Stabilizer menu to determine whether to scale or shift a stabilized image, to track in frame or field mode, and to fix the reference box.
When a clip is stabilized, the image is shifted. You can choose any of the following from the Scale and Shift Option box to fill or remove the area where the image has been shifted.
| Select: | To: |
|---|---|
| Roll | Wrap the image around to fill the area. |
| Fill | Rescale both dimensions of the image independently to make it fit into the frame. Note that this can change the aspect ratio. |
| Crop Edges | Rescale the shortest edge of the image to fit into the frame and crop the longest edge. There will not be a black border. |
| Letterbox | Rescale the longest edge of the image to fit into the frame and fill the rest of the image with a black border. |
| Shift | Use a colour to fill the area. Use the adjacent colour pot to pick the colour. You will lose texture and will fill the rest of the image with the color you picked. |
Before analysing, you can use the Pretracking option to preview the motion path for a specified number of frames. You can then adjust the tracker position, if necessary, to find the best reference point. The Pretracking option applies only to the selected tracker, regardless of whether you selected Solo, Selected, or Gang in the Tracker Selection box. If you move or resize a tracker with Pretracking enabled, the next frames are analysed.
Use Oversampling to toggle high-quality subpixel image adjustment on and off:
After you stabilize a clip with Oversampling on, rotoscope it in Paint to remove the border that appears at the edges. Avoid using Action (or any other component that uses texture memory) to do this because you will lose the benefits of Oversampling.
The reference image (the image where you placed the reference box) appears in transparency when you select a keyframe. Adjust the opacity of the image to make it more or less transparent. When the opacity is set to 0, the reference image does not appear. When the opacity is set to 100, the reference image is completely opaque.
By default, the reference box turns into a magnifying glass when you select it. Increase or reduce the magnification factor in the Zoom box.
| Zoom: | Result: |
|---|---|
| 0 | No zooming. The crosshair appears in the tracker box after you analyse the clip. |
| 1 | No zooming and no crosshair. |
| 2, 3, 4, 5 | A magnification factor of 2, 3, 4, and 5, and a crosshair in the tracker box. |
