D-VHS is a digital video format developed by JVC , together with Hitachi , Matsushita and Philips . The principle of recording and cassettes are similar to the S-VHS format (but with a better and more expensive tape). It is possible to record the signal in both standard and high definition. Data is recorded in MPEG-2 format.
| D-VHS | |
|---|---|
| Media type | Tape Videocassette |
| Content format | MPEG-2 |
| Counting mechanism | Tilt footage |
| Recording mechanism | Tilt footage |
| Designed by | Hitachi , JVC , Panasonic |
| Application | Video production, home video |
| Year of issue | 1998 |
The format was introduced in 1998. Due to the massive introduction of recordings on optical media DVDs and hard drives did not receive distribution.
Advantages and disadvantages
There were compatibility issues between the JVC and Mitsubishi VCRs. PAL and NTSC recordings were also incompatible. Only a few VCR models were released to the market, the prices for both them and cassettes were excessively high, which led to low sales. In addition, consumers were poorly informed about the new format due to a weak advertising campaign. Recording on D-VHS tape recorders was possible only through the Firewire interface, which practically did not equip television sets and satellite receivers. Video tapes were bulky and cost more than hard drives.
The main advantage of D-VHS was the ability to record a coded high-definition signal from a satellite or cable broadcast, since the recording was made in the [by] bitstream format ([BitStream] / a pure bit-for-bit ).
The JVC deck, which was produced in the UK , made it possible to record the signal from analog sources to S-VHS tapes. On the E-240 cassette, in the LS-3 recording mode, more than 17 hours of video was placed in a quality that was indistinguishable from standard television broadcasting, which made this device attractive for home use.
The disadvantages of this deck were the lack of DV output and RGB input ( RGB- input via SCART-connector 'a). The NTSC version had a component output.
D-Theater
In 2002, D-VHS movie tapes were sold in the United States, compatible only with decks bearing the D-Theater logo. The tapes were recorded in 720p and 1080i and at least one Dolby Digital audio track. Some cassettes also had a DTS soundtrack . The cassettes had regional coding — 1 for the USA and 2 for Japan. There were no cassettes for Region 2, and to watch the cassettes of Region 1 in Japan, we had to break into the regional protection of the VCRs.
Most of the released cassettes had copy protection ( DTCP , also known as “5c”), which did not allow copying of contents via the Firewire interface.
Links
- HDnet Store and info
- Audio Video Science Forum D-VHS list
- LaserDisc Database D-VHS Catalog
- D-VHS // Stereo & Video: magazine. - 2001. - № 2 .