DVD Shrink
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| Developer(s) | DVD Shrink |
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| Stable release |
3.2.0.15 / July 25, 2004
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| Development status | Discontinued |
| Operating system | Microsoft Windows |
| Type | Optical disc authoring |
| License | Freeware |
DVD Shrink is a freeware DVD transcoder program for Microsoft Windows that uses a DVD ripper to back up DVD video. The final versions are 3.2.0.15 (English) and 3.2.0.16 (German); all other versions, such as DVD Shrink 2010, are scams. DVD Shrink's purpose is, as its name implies, to reduce the amount of data stored on a DVD with minimal loss of quality, although some loss of quality is inevitable. It creates a copy of a DVD, during which the coding only allowing the DVD to be played in certain geographical areas is removed, and copy protection may also be circumvented. A stamped DVD may require more space than is available on a writeable DVD, unless shrunk. Many commercially released video DVDs are dual layer (8.5 GB); DVD Shrink can make a shrunk copy which will fit on a single-layer (4.7 GB) writeable DVD, processing the video with some loss of quality and allowing the user to discard unwanted content such as foreign-language soundtracks.
DVD Shrink is designed to be easy to use. It is contained within a single executable file that is one megabyte in size. The program features a DeCSS decryption algorithm, enabling it to open and decrypt many currently available DVDs, although it is defeated by some newer copy protection techniques. As well as this, it can open DVD files contained in a VIDEO_TS folder or a disk image (ISO, IMG, NRG or MDS/Ixx).
The DVD video may then be re-encoded by the application's VBR encoder. The user is able to choose how the compression is to be distributed across the DVD. DVD Shrink can automatically re-compress video, to as little as 39% of its original size, depending on the aspect ratio of the original DVD (with a corresponding loss in quality) to allow it to fit on a standard DVD±R(W), a Dual-Layer DVD+R, or any user-defined custom size. When "Deep Analysis" and "Adaptive Error Compensation" options are selected, the quality of the resulting DVD is improved. These options are more time-consuming because DVD Shrink runs through the DVD once doing the analysis, and then again doing the transcoding. The transcoder in DVD Shrink was unusual at the time of its release in that it employs compressed domain video processing technology to avoid a full decode and re-encode of the video stream. This boosts performance significantly as only part of the video stream is decoded and scraped.
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