Previewing your clip

It is not necessary to use the preview function but it will help you decide the best blending mode and whether additional alignment is needed.

To preview, click on the Start preview button. The SimulCam clip will be displayed in the main screen as the calculation progresses. At any moment, you can decide to stop the calculation by pressing the Stop preview button. You can now experiment with different blend modes to compare which gives the best result.

If the SimulCam can be improved, go Back to the previous steps and redo cue in, alignment, blend mode etc.

This done, it may be that there is still a progressive misalignment of the backgrounds. If this happens, stop the preview and try one of the following.

1.	Add an alignment flag to the frame where the background misalignment begins (see Adding new alignment frames).

2.	Select a different first frame - as described in Step 1.

It is much quicker to preview using Constant Blending mode. When satisfied that alignment is correct switch blending mode to Motion-based or color-based for a better quality result.