How to rip bluray movie?

What does DVD "ripping" and BluRay "ripping" mean?

• I mean what is ripping? How are these digital versions of the video created? Are they actually created from the devices like DVD discs and Blu-ray discs? Because that would mean that a BluRay rip of a movie won't be out online unless the Blu-ray discs of the movie is released. How does this technology work?

• Answer:

  All the digital data is comprised of information that is represented in the binary format(0's and 1's). Now you need a medium to store this binary data. DVD and BluRay are optical storage mediums in which the digital data is stored in an optical disc which is etched with pits in between lands. Now the pattern of pits and lands represents the data encoded on the disc. When you pop the DVD/BluRay into a player, the player decodes the information in suitable format for it's consumption and then processes it. For example, when you insert the disc into your computer and say, play a movie from it; your video player decodes the data into a video stream and displays the output accordingly. Ripping?, Ripping is basically copying the information stored in the disc over to your computer. Usually media discs  containing copyrighted material uses some sort of DRM/copyright protection so that people cannot copy the data easily. So some rippers also bypass/break these protections and copy the data. The data for movies is usually stored in some format which will make sense for the player, the way to store the data is called encoding. Now there are various ways to store data, and DVD/BD use one of them. While ripping the ripping software provides you the choice of various formats like H.264 How can rips be available before BD/DVD release? Often discs are shipped to the stores before their release to consumers in order to ensure prompt availability. Now some shady guy, who works at the store can pick up the disc and rip the movie from it and then can release it to file sharing websites. Also a guy involved in the team for the movie and who has access to the internal copies can also release the material before it's disc availability.