Minggu, 25 Mei 2014

What is DVD Quality?




Mr. Boss





Answer
DVD-Video discs require a DVD-drive and an MPEG-2 decoder (e.g. a DVD-player, or a DVD computer drive with a software DVD player). Commercial DVD movies are encoded using a combination of MPEG-2 compressed video and audio of varying formats (often multi-channel formats as described below). Typical data rates for DVD movies range from 3â10 Mbit/s, and the bit rate is usually adaptive. The typical video resolution for an NTSC disc is 720 Ã 480, while a PAL disc is 720 Ã 576. The specifications for video files on a DVD can be any of the following:

Up to 9.8 Mbit/s (9800 kbit/s) MPEG-2 video
Up to 1.856 Mbit/s (1856 kbit/s) MPEG-1 video
PAL:
720 Ã 576 pixels MPEG-2 (Called full D1)
704 Ã 576 pixels MPEG-2
352 Ã 576 pixels MPEG-2 (Called Half-D1, same as the China Video Disc standard)
352 Ã 288 pixels MPEG-2
352 Ã 288 pixels MPEG-1 (Same as the VCD Standard)
NTSC:
720 Ã 480 pixels MPEG-2 (Called full D1)
704 Ã 480 pixels MPEG-2
352 Ã 480 pixels MPEG-2 (Called Half-D1, same as the China Video Disc standard)
352 Ã 240 pixels MPEG-2
352 Ã 240 pixels MPEG-1 (Same as the VCD Standard)
All MPEG video must be 25 frames per second on PAL DVDs. On NTSC DVDs MPEG-2 video can be either 29.97 frames per second or 23.976 frames per second, (with the player repeating frames via 3:2 pulldown to achieve NTSC's standard 29.97 frames per second) while MPEG-1 video can only be 29.97 frames per second. Interlacing is only supported for MPEG-2 video on both PAL and NTSC DVDs. 16:9 aspect ratio anamorphic video is only supported at 720x576/480, and all resolutions support 4:3 aspect ratio video.

Some DVD-hardware or software players may play discs whose MPEG files do not conform to the above standards; commonly this is used to support DVD discs authored with formats such as VCD and SVCD. While VCD and CVD video is supported by the DVD standard, neither SVCD video nor VCD, CVD, or SVCD audio is compatible with the DVD standard. Some hardware players will also play DVD-ROMs or CD-ROMs containing MPEG video files; these are "unauthored" and lack the file and header structure that defines a DVD-video. (These files contain extra information, such as the number of video tracks, chapters and links to extra features, which DVD players use to navigate a DVD-video).

A high number of audio tracks or a large amount of extra material on the disc will often result in a lower bit rate (and image quality) for the main feature. The total bitrate including video, audio and subtitles can be a maximum of 10.08 Mbit/s (10080 kbit/s).

The audio data on a DVD movie can be PCM, DTS, MPEG-1 Audio Layer II (MP2), or Dolby Digital (AC-3) format. In countries using the PAL system standard DVD-Video releases must contain at least one audio track using the PCM, MP2, or AC-3 format, and all standard PAL players must support all three of these formats. A similar standard exists in countries using the NTSC system, though with no requirement mandating the use or support for the MP2 format. The vast majority of commercial DVD-Video releases today employ AC-3 audio. The official allowed formats for the audio tracks on a DVD Video are:

PCM: 48 kHz or 96 kHz sampling rate, 16 bit or 24 bit L-PCM, 2 to 6 channels, up to 6144 kbit/s
AC-3: 48 kHz sampling rate, 1 to 5.1 (6) channels, up to 448 kbit/s
DTS: 48 kHz or 96 kHz sampling rate, 2 to 6.1 channels, Half Rate (768 kbit/s) or Full Rate (1536 kbit/s)
MP2: 48 kHz sampling rate, 1 to 7.1 channels, up to 912 kbit/s
DVDs can contain more than one channel of audio to go together with the video content, supporting a maximum of 8 simultaneous audio tracks per video. This is most commonly used for different audio formats -- 5.1 DTS, 2.0 AC3, etc. -- as well as for commentary and audio tracks in different languages.

Where can I get the best deal for Sony DVP-NS710H B 1080p Upscaling DVD Player?




unwonted


Where can I find a really good deal online for Sony DVP-NS710H B 1080p Upscaling DVD Player


Answer
DVP-NS710H/B Sony DVD Player with 1080p Upscaling and HDMI
Regular price: $79.00
Sale price: $64.00
You Save: $15.00

Make movie night more enjoyable and watch your DVDs in striking 1080p HD resolution with this upscaling DVD player.

Breathe new life into your DVD collection. The DVP-NS710H/B DVD player upscales your existing DVD collection to gorgeous 1080p HD resolution via an HDMI⢠connection. This DVD player is also equipped with BRAVIA® Sync⢠which gives you one-remote access and control of your DVD player and other BRAVIA Sync-compatible devices. In addition to exceeding ENERGY STAR® compliance levels, you'll also enjoy uncompromised audio quality with Dolby® and dts® digital outputs, as well as an analog audio two-channel output. You can even view photos and listen to music in a wide variety of formats. Includes A/V cable and remote control with batteries.

# Features DVD upscale to 1080p near HD resolution via HDMI⢠- 1080p upscaling DVD player via HDMI⢠connection: DVD upscaling via HDMI⢠makes your existing standard DVDs look better on your HDTV by upscaling them to 1080p near HD Resolution.

# BRAVIA® Sync - BRAVIA Sync capability combines the one-touch access and control functionality of BRAVIA Sync⢠with the ability to control BRAVIA Sync-compatible devices, such as Sony HDTVs and receivers.

# Exceeds ENERGY STAR® standards - Many home audio and video devices can use significant power, even when turned off and in standby mode. The DVP-NS710H, however, was built for energy efficiency. It uses under 0.1W of power in standby mode, far exceeding ENERGY STAR® compliance levels and using less power than most other DVD players.

# Multi-brand TV remote control - Switching back and forth between remote controls while watching television or a movie is a hassle. The DVP-NS710H comes with a compact remote control that allows you to operate most major brands of television and your DVD player.

# Multiple format disc playback - The DVP-NS710H isn't just for movies. You can enjoy movies, as well as photos and music, in a wide variety of formats. The player supports DVD/DVD-RW/DVD-R/DVD+RW/DVD+R DL and CD-R/CD-RW discs runs WMA, AAC, LPCM, MPEG1 (Cyber-shot® movie), and JPEG files.

# Precision Cinema Progressive⢠technology - Many other DVD players detect image changes at the scan line level; the Sony® Precision Cinema Progressive system, however, detects image changes at the pixel level. The picture is more faithful to the source -- whether film or video -- because special algorithms handle the different pixel behavior. The technology also employs separate algorithms to process the moving and still parts of an image, resulting in sharp backgrounds with moving objects that are virtually free from artifacts.

# Precision Drive⢠3 system - Past generations of Precision Drive were only able to compensate for warped discs by moving the entire optical block, which took more time and limited the amount of correction possible. Sony® Precision Drive 3 simplifies the process by moving the lens -- instead of the entire optical block -- for faster and more accurate error correction.

# Photo TV HD - Bring your photos to life and enjoy highly detailed, Full HD 1920 x 1080p images with the PhotoTV HD mode. PhotoTV HD works with your DVD player and HDMI⢠output to fine tune sharpness, gradation, and color, displaying images that more closely match the look of printed photos.

# Fast/slow playback with sound - Fast and slow playback with sound lets you advance through scenes quickly and ensures you never miss a word.

# Multiple-disc resume - With multiple-disc resume, you can power up and return to the last scene you were watching on up to six discs without having to search. Start and stop a movie or switch DVDs -- the player will know exactly where you last left off.

# Dolby® digital output; dts® coaxial digital output - The DVP-NS710H includes support for enhanced audio formats from Dolby and dts and provides connectivity to older receivers and televisions, making the player compatible with many existing audio systems. Also included is an analog audio two-channel output.

# Child lock (tray lock): - A child lock feature prevents children from opening the DVD player's tray and either removing a DVD or playing a different DVD while the parent is away.

Inputs/Outputs
# Coaxial Audio Digital Output(s) : 1 (Rear)
# Component Video (Y/Pb/Pr) Output(s) : 1 (Rear)
# Composite Video Output(s) : 1 (Rear)
# HDMI⢠Connection Output(s) : 1 (Rear)
# RCA Audio Output(s) : 1 (Rear)
# S-Video Output(s) : 1 (Rear)




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Title Post: What is DVD Quality?
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