Step 1: Free download Emicsoft DVD Ripper (with this DVD Ripper you can easily rip DVD to FLV. Emicsoft DVD Ripper is all-in-one, super fast DVD ripper software that can rip DVD movies to all key video and audio formats such as rip DVD to FLV, AVI, WMV, MOV, RM, RMVB, MPG, MPEG, 3GP, 3GPP, MPG, ASF, MP4, VOB, WMA, M4A, MP3, AC3, WAV, etc. )
Step 2: Launch it and get ready to Rip DVD to FLV
The process of Rip DVD to FLV is very easy, just follow as the picture indicated.
If you want to Rip FLV to DVD, you can look at this guide on How to Burn FLV to DVD