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What are the disadvantages of DVD?

* Vagueness of the DVD specification and inadequate testing of players and discs has resulted in incompatibilities. Some movie discs don’t function fully (or don’t play at all) on some players.
* DVD recorders are more expensive than VCRs.
* DVD has built-in copy protection and regional lockout.
* DVD uses digital compression. Poorly compressed audio or video may be blocky, fuzzy, harsh, or vague.
* The audio downmix process for stereo/Dolby Surround may reduce dynamic range.
* DVD doesn’t fully support HDTV.
* Some DVD players and drives can’t read CD-Rs.
* Some DVD players and drives can’t read recordable DVDs.
* Most DVD players and drives can’t read DVD-RAM discs.
* Very few players can play in reverse at normal speed.
* Variations and options such as DVD-Audio, DVD-VR, and DTS audio tracks are not supported by all players.

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