Ripping

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Ripping is the extraction of digital content from a container, such as a CD, onto a new digital form and location. Later, the term was applied to ripping WAV or MP3 files from digital audio CDs, and after that to the extraction of contents from any storage media, including DVD and Blu-ray discs, as well as the extraction of video game sprites. Ripping is often used to shift formats, and to edit, duplicate or back up media content. A rip is the extracted content, in its destination format, along with accompanying files, such as a cue sheet or log file from the ripping software. To rip the contents out of a container is different from simply copying the whole container or a file. When creating a copy, nothing looks into the transferred file, nor checks if there is any encryption or not, and a raw copy is also not aware of any file format. One can copy a DVD byte by byte via programs like the Linux dd command onto a hard disk, and play the resulting ISO file just as one would play the original DVD. To rip contents is also different from grabbing an analog signal and re-encoding it, as it was done with early-day CD-ROM drives not capable of digital audio extraction (DAE). Sometimes even encoding, i.e., digitizing audio and video originally stored on analog formats, such as vinyl records, is incorrectly referred to as ripping.