BD is the short name of Blu ray disc, is an optical disc storage medium made to supersede the standard DVD format. It provides us with high definition video, PS3 games, and other data, with up to 25GB per single layered, and 50GB per dual layered disc. However, if you want to enjoy BD movies, we have to obtain a BD player, which makes the BD source restricted. So ripping BD to AVI is quite a good idea to make you enjoy BD on pc or other media players.
Guide: How to rip BD to AVI

Step1. Download and install the BD to AVI Converter on your computer, and launch it. Then click “Add” to import the BD source to the program.

Step2. Do some selections
In Subtitle, choose the subtitle language.
In Audio, choose the audio language.
In Angle, choose the angle.

Step3. Set AVI as the output format
Click the drop down box of “Profile” to enter output selection panel. Choose AVI in “Common video” as the output format.

Step4. Settings
You can also click “Settings” button to do some settings for the Blu-ray, such as adjusting its audio and video codec, quality, video size, bit rate, frame rate, aspect ratio, etc.

Step5. Ripping BD to AVI
After all have been finished, you can revisit the main interface and click the big button “Convert” to commence the BD to AVI conversion. After the conversion, you can click “Open” to obtain the converted files and transfer it to your mobile device for enjoyment.