BD rip
A BD-Rip is the transfer of video and audio data from a Blu-ray to another storage medium (usually initially on the hard drive of a PC), which can also involve circumventing copy protection mechanisms ( ripping ).
As with a DVD (see DVD-Rip ), either the complete Blu-ray, the main film or only certain elements are copied to the hard drive for further processing. Since Blu-Rays are copy-protected, a so-called on-the-fly decryption driver (copy protection cracker ) must be used, such as Slysoft's AnyDVD HD. However, the use of such copy protection crackers is punishable ( § 95a ), provided that a technical protection device is circumvented and this is not done exclusively for personal private use ( § 108b UrhG).
Corresponding encoder software, which converts the data, is usually used for further processing . The most popular container formats for creating BD rips are the MKV and MP4 formats, with the most popular codecs used for the process being H.264 and MPEG-4 .
Often a film file should be created that is much smaller than the original medium and yet loses as little quality as possible. The smaller the target file, the more savings must be made in terms of video and, if necessary, audio quality. In general, additional data from the original, such as menus, extras, alternative sound tracks, subtitles, etc., are omitted when ripping, so that only the actual film is processed further.
BD copy
A BD rip does not necessarily involve converting to another video format. To create a copy, it is usually necessary to "rip" the Blu-Ray files to the hard drive beforehand, as otherwise two Blu-ray capable drives are required.
Most original Blu-rays often have a total size of over 22.5 gigabytes (BDDL), so that the data size is reduced by recoding until they finally fit on a commercially available single-layer Blu-ray (BDSL). You could make almost exact copies of Blu-rays with double-layer Blu-ray blanks, but because of the high prices for such blanks, many users often choose to recode. A special video software program such as DVDFab or HandBrake is used for this. By omitting audio tracks, subtitles or additional material (menu, interviews), recompression for the main film may be saved, or only a slight compression may be necessary.
Software (selection)
- AnyDVD HD
- DVDFab
- HandBrake
See also
- Transcoding , the process of converting a media object into another format