DV - VHS - WVHS - Materi Video MM 2011

“DV”

Singkatan dari Digital Video

Diluncurkan tahun 1996

Varian: DVCAM dan DVCPRO yang digunakan oleh Sony dan Panasonic

Versi high-definition: HDV

 (     (Digital Video) A generic term for capturing and/or editing video in the digital domain.

       (Digital Video) A digital videotape format that was introduced in 1995 for camcorders. Because of its high quality, DV has been widely used in both consumer and professional applications with Sony and Panasonic introducing high-end variants (DVCAM, DVCPRO).

DV and MiniDV Cassettes

DV uses 1/4" (6.35mm) metal evaporated tape and comes in two cassette formats: standard full-size DV cassettes (125x78x14.6mm) that hold three hours of video and one-hour MiniDV cassettes (66x48x12mm). The small MiniDV cassettes greatly enabled camcorders to shrink to handheld proportions.

Compression and Specifications

Depending on the motion content of the scenes, DV provides about a 5:1 compression. It uses the same DCT algorithm as MPEG for compression, but it is easier to edit because each frame is compressed independently without relying on the frame before it.

Based on the IEC 61834 standard, DV tape moves at a constant rate of 18.8mm per second, providing a data rate of 25 Mbps. The newer SMPTE 314 standard supports 25 Mbps and provides 50 Mbps for studio use.

DV machines record a YCbCr 720x480 frame for NTSC and a 720x576 frame for PAL/SECAM. DV tapes can be played back on DV, DVCAM and DVCPRO tape decks; however, MiniDV cassettes require an adapter for DVCPRO machines. Note: DV is not related to DVD, although both use YCbCr digital recording. See HDV, DVCAM, DVCPRO and D9.

“VHS”

Singkatan dari Video Home System/ Vertical Helical Scan

Rilis September 1976

Device penyimpan dan pemutar menggunakan video cassette recorder (VCR) yang dikembangkan JVC

Menjadi standard untuk rekaman pada tahun 1980-an dan 1990-an.

Pesaing Sony’s Betamax, Philip Video 2000

Mendukung beberapa sinyal televisi:

o PAL/625/25 (most of Western Europe, many parts of Asia and Africa)

o SECAM/625/25 (SECAM, French variety)

o MESECAM/625/25 (most other SECAM countries, notably Eastern Europe and Middle East)

o NTSC/525/30 (Most parts of North and South America, Japan, South Korea)

o PAL/525/30 (i.e. PAL-M, Brazil)

“W-VHS”

High definition analogue video tape

Format diciptakan oleh JVC

Media penyimpanan berupa 12.7mm magnetic metallic tape  yang disimpn dalam cartridge yang berukuran sama dengan VHS

  Salam Kekuatan Berawal Dari Hati bayoete.blogspot.com