Digital video camera recorder, Digital video recorder.

A digital video recorder (DVR) is a device that records video without videotape to a hard drive-based digital storage medium. The term includes stand-alone set-top boxes and software for personal computers which enables video capture and playback to and from disk. Some consumer electronic manufactures have started to offer televisions with DVR hardware and software built in to the television itself.

In 2003 many Satellite and Cable providers introduced dual-tuner DVRs. These machines have two tuners within the same receiver to operate independently of one another. The main use for this feature is the capability to record a live program while watching another live program simultaneously or to record two programs at the same time while watching a previously recorded one.

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PCs
Software and hardware is available which can turn personal computers running Microsoft Windows, Linux and Macintosh into PVRs, and is a popular option for home-theater PC (HTPC) enthusiasts.

Linux
There are many open source and GPL-licensed DVR applications available for Linux:

MythTV
Freevo
DVR
VDR
KnoppMyth - provides an out of the box MythTV based PVR solution
Commercial Linux version available from SageTV for most popular Linux distributions. Brightbox, a consumer electronics device, uses SageTV.

DVD
Many DVD-based DVRs are equipped with two DVD drives or an additional internal hard drive. This arrangement can be used to copy content from a source DVD, which is disallowed in the U.S. under the Digital Millennium Copyright Act if the disc is encrypted. Most such DVRs will hence not allow recording of video streams from encrypted movie discs.

Digital camcorders
Some DVD-based DVRs incorporate a Firewire connector which can be used to capture digital video from a MiniDV or Digital 8 camcorder, possibly recording a simple DVD as the camcorder is played back. Some editing of the resulting DVD is usually possible, such as adding chapter points.

Internet Resources

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