How to edit, crop, trim DVD clips on Mac OS X?
If you want to edit your movie before converting it, Aiseesoft DVD Ripper for Mac provides you with various powerful functions including:
1. Trim DVD Title or Chapter
If you want to capture a clip from the current title/chapter, you can click the Trim button to open the Trim window and trim the current title or chapter by dragging the Start Time slider to set the start time, and dragging the End Time slider to set the finish time. Then you can only rip segments from DVD on mac.
2. Crop DVD Video
If you want to remove the black edges or just convert an area from your movie video, you can click the Crop button to crop the video of the current title or chapter. You can specify an area either by dragging the frame around the video or setting the crop values: Top, Button, Left and Right. Above the crop pane, you can select an output aspect ratio and the available options are: Keep Original, full screen, 16:9 and 4:3. You can preview the video in the select aspect ratio on the main interface and during the conversion process.