In order to get a good grip on real spots, Dirt Remover has to take a good look at the video. It is very easy for Dirt Remover to see where a spot appears if there is no motion in the video. But if the video has a very fast motion, it is quite complicated to figure out if a specific object is a spot or just a fast moving freckle. This is why there is the Motion Tolerance control. The higher you set this value, the less Dirt Remover will take care of the motion of the objects in the video and it is possible that some objects will be removed. Make sure not to set this value too high. Values between 1 and 40 are good in most cases.
Dirt Brightness Range
Dirt does not always look the same. In addition each video might have a different black and white level. Use these two controls Low and High to tell Dirt Remover the brightness range of the video. Don't narrow the brightness range too much. Dirt Remover needs to have a chance to look at the whole video. A too narrow range is contra productive and should be avoided.
- Dirt Remover will not be able to find the spots anymore, if the speed of the video has been changed. Please make sure to remove the spots first, before you change the speed.
This additional control might help in some cases when you get borders around the repaired spots. With this control you can feather the mask in order to eliminate those borders.
- It is important that spots are visible for one frame only. Spots that are visible for longer than one frame, will not be considered as a spot and wont be removed.
- If you experience very big spots or damages in your video, you might want to use either Dead Pixel or Dropout Eliminator to repair them.