How to compress a DVD9 movie to a 4.7 GB blank DVD?

If your DVD movie is DVD9 which is larger than 4.7 GB (which is actually 4.38 GB in windows) and you want to copy it to a 4.7 GB blank DVD, you can only compress it. It will lose some quality. But usually the quality is acceptable when you enjoy the compressed DVD. (Please note: it may lose more quality of the DVD menu in order to keep the quality of the main movie.)
If you want to copy entire DVD movie including menus, trailers and special features, you can compress full disk. Please refer to Option A. If you want to keep the quality as good as possible, you can compress main movie only. Please refer to Option B.

Option A: Compress full disc

(1) Insert your DVD movie into your DVD-ROM drive.
(2) Insert a 4.7 GB blank DVD into your DVD burner. If you have only a DVD drive, you can insert it after finish reading.
(3) Choose the "Full Disc" option.
(4) Click the "Go!" button to start copying.
(5) A prompt window as shown below will popup. If you have only a DVD drive, the window will popup after you insert your blank DVD.

(6) Click the "Yes" button.

Option B: Compress main movie only

(1) Insert your DVD movie into your DVD-ROM drive.
(2) Insert a 4.7 GB blank DVD into your DVD burner. If you have only a DVD drive, you can insert it after finish reading.
(3) Choose the "Main Movie" option and wait just a second. A new window as shown below will popup.

Choose main movie's audios and subtitles

(4) Select the audios and subtitles that you want to keep and choose a default audio and subtitle. And then click the OK button to return the main window.
(5) Click the "Go!" button to start copying.
(6) If the total size of the main movie is larger than 4.38 GB, a prompt window as shown below will popup. If you have only a DVD drive, the window will popup after you insert your blank DVD.

(6) Click the "Yes" button.