Guide of Aimersoft DVD Ripper for Mac
What you need is Aimersoft DVD Ripper for Mac; you can free download it from here:
http://www.aimersoft-mac.com/dvd-ripper-mac.html
Part2. How to edit (trim, crop, join) DVD movie on Mac OS X
1> Trim DVD movie
If you want to capture certain part of the DVD movie, you can click “Trim” to customize the conversion time, there will be a timeline below the preview window, you can drag the little triangle icon to set the conversion start time and end time.

2> Crop DVD movie
If you want to cut the black edges of the DVD movie, you can click the “Crop” button, and then you will see a pop up windows (See the figure below). There is a frame in dashed line around the movie video; you can drag it to cut the black edges. More over, you can specify an area by setting the crop values. You can select an output aspect ratio and the available options are: Keep Original, full screen, 16:9 and 4:3.

3> Adjust video effects - Emboss, Megative, Old film...
You can click the “Effect” button and customize the brightness, saturation, contrast, volume, etc (See the figure below). You can even apply special effects such as “Emboss”, “Negative”, “Old film” and “Gray” by selecting an effect from drop-down list.

4> Merge DVD Titles, Chapters into one File
If you want to join several DVD chapters into one file, on the main interface, there is a check box “Merge into one file”, select it, then you will only get one output file instead of several files by chapters.
Free Download DVD Ripper for Mac Now
Previous Part :How to rip DVD to MP4, MOV, AVI, MPEG, 3GP, FLV, M4V, MP3, AAC, APE on Mac OS X?
