HomeYou can click 
to customize the video before converting videos, DVD and Blu-ray movie. Six tabs are available: Trim, Crop, Text Watermark, Image/Video Watermark, Effect, and Audio Replacement.
Trim: Cut selected video to remain desired duration only.
Crop: Cut off the black edges of the image and set the aspect ratio.
Text Watermark: Add text watermark to selected video clip.
Image/Video Watermark: Add image or video watermark to selected video file.
Effect: Adjust the brightness, contrast of the video, and the volume of the audio.
Audio Replacement: Replace the original audio track with your specified music.
Besides, there are some user-friendly control buttons for you to preview and edit selected video file conveniently. Please refer to the tool bar below.
Play/Pause: Click to start playing the current video or pause the playing.
Stop: Click to quit playing video.
Left square bracket: Click to set the starting time for trimming.
Right square bracket: Click to set the ending time for trimming.
Reset: Click to reset to default values.
Vertical Flip: Click to flip the image vertically.
Horizontal Flip: Click to flip the image horizontally.
Volume slider: Drag to adjust the volume ranges from 0% to 400% of the original volume.
Trim Video
Pavtube iMedia Converter for Mac can record and convert exactly your favorite section of the video by trimming function.
To trim a video, please follow any of the following methods:
- Drag the control strip (slider) to cover the segment you want to remain.
- When previewing the video, click the left square bracket
to set start point, and click the right square bracket 
to set end point. - Input specific value in Set start time and Set end time.
Crop Video
Pavtube iMedia Converter for Mac helps you to get rid of the black edges and unwanted part by the cropping function.
Follow either of the below methods to crop selected video:
a. Crop by dragging and dropping the crop frame
The cropping frame is a dashed line around the video. You can move your mouse cursor onto an adjusting box and drag the dashed frame.
b. Crop by setting values
There are four crop values on the bottom of the crop window: Left, Top, Width and Height. You can input values to crop your video to be constricted in different area and size.
Keep Original Aspect Ratio
By checking this box, the output file will derive its aspect ratio from the parameter of cropped area. And this feature takes effect only when the aspect ratio of cropped part is inconsistent with the target profile settings. So, if you want to keep the cropped aspect ratio, you should not select “Original” size when you set the parameter of output profile in “Settings”.
