The term “region free” can be referred either to a DVD can be played anywhere on any DVD player, or a DVD player can play any DVD from anywhere on the earth. It also used to describe games consoles. DVD players come with region encoding to define in what region it can be used or to play what kind of disc, although many customers figure out how to bypass it. Read More
4:1:1
A ratio used to describe the sampling frequency of a digitized signal. The ratio describes luminance is sampled at 3.37 MHz 4 times, while the color is sampled 1 time at 3.37 MHz in each of the separate parts. DV, DVCAM and DVCPRO25 use 4:1:1 color sampling. Formulated as: Y (luminance) is sampled at 13.5 MHz (or 3.37 x 4), R-Y (color) is at 3.37 MHz (or 3.37 x 1) sampled, B-Y (color) is set to 3.37 MHz (or 3.37 x 1) equals 4:1:1. Read More
Pan and scan is a method of adjusting widescreen film images so that they can be shown within the proportions of a standard definition 4:3 aspect ratio television screen, often cropping off the sides of the original widescreen image to focus on the composition’s most important aspects. Read More
What is the difference between DVD+R and DVD+RW? There are three key points:
DVD+R is a non-rewritable format and it is compatible with about 89% of all DVD Players and most DVD-ROMs.
DVD+RW is a rewritable format and is compatible with about 79% of all DVD Players and most DVD-ROMs. Read More
1080i and 1080p are the shorthand name for two category of video modes. The number 1080 stands for 1080 lines of vertical resolution, while the letter i stands for interlaced or non-progressive scan, the letter p stands for progressive scan or non-interlaced. Read More
VIDEO_TS
The UDF file name used for DVD-Video directory on a DVD disc volume. Files under this directory name contain pointers to the sectors on the disc which hold the program streams.
. BUP = Backup files of the IFO files.
. IFO = The IFO files includes information such as chapters, subtitle tracks and audio tracks.
. VOB = The VOB files contains the actual video,audio,subtitles and menus. Read More
Here is some acronym words we often see:
NTSC – National Television Systems Committee. A group that established black-and-white television standards in the United States in 1941 and later added color in 1953. NTSC is used to refer to the systems and signals compatible with this specific color-modulation technique. Read More
History. Approximately a decade old, yet newer than AVI, the MPEG format was an attempt to provide high quality video using smaller file sizes, as invented by the Moving Pictures Expert Group. The MPEG format has seen several variations over the years, having been one of the first streaming formats using SGI WebForce MediaBase (which failed), becoming the MPEG-1 VCD specification, moving to the digital satellite DBS/DVB/DVB-II MPEG-2 formats, becoming the de facto DVD MPEG-2 format, using the popular MPEG-Layer III (MP3) audio format, and most recently as the MPEG-4 DivX video format for video swapping online. Read More
SACD and DVD-Audio are high-resolution audio formats that were intended to replace the standard music CD, but have not made a large market impact with consumers. A Universal DVD player refers to a DVD player that plays SACDs (Super Audio CD) and DVD-Audio Discs as well as standard DVDs. Universal DVD players have a set of 6-channel analog audio outputs that allow the consumer to access SACD and DVD-Audio on an AV receiver that also a set 6-channel analog audio inputs. Read More
Dolby AC-3 surround sound system provid five full-range channels and a subwoofer channel component, known as 5.1 channel. Five channels, including left anterior, central, right front, left rear, right rear. Bass channel bass mainly to provide some additional information, so that some scenes, such as explosion, impact, to be heard better. Six channels of information and reduction in the production process of all digital, very little information loss, the whole band is very rich in detail. Read More
