The following is a detailed guide about how to trim movie, crop video and adjust effect.
1. Trim video clip
Select a video and click Trim button to open the Trim window. Set Start Time and End Time by dragging the Start Time slider and End Time slider respectively.

2. Crop area size
Select a video and click Crop button to open the Crop window. Adjust the area size by dragging the frame around the video or input values in text boxes: Up, Down, Left, Right.
3. Adjust video effect
Select a video and click Effect button to open the effect window. Drag the sliders to set brightness, contrast, saturation and audio volume. You can also choose to flip the video and apply a special video effect to your video file by selecting a special effect from: Gray, Emboss, Old Film and Negative.