DVD Video

One of the most enjoyable activities at home is watching movies, especially if you spend it with your family and friends. This is basically the reason why a DVD Video is very important to anyone’s home theater system.

A DVD video is basically a video format that is used in storing videos on DVDs or in DVD-ROMs. Currently, the DVD Video is considered the most dominant form of video formats for consumers from the United States, Europe, and in Australia. The discs that use DVD Video specifications need a DVD drive plus an MPEG2 decoder like the DVD player or the DVD computer drive along with the DVD player software. The DVD movies commercially manufactured are basically encoded with the use of MPEG2 combinations with compressed video as well as different audio formats.

Before you buy DVD Video, you have to know first about frame rates and other requirements for a DVD video. On a PAL DVD, all the MPEG videos should have twenty-five frames per second while on a NTSC DVD; the MPEG-2 video can be 29.97 frames per second and 23.976 frames per second. Additionally, the MPEG-1 video of the NTSC DVD is only 29.97 frames per second. Interlacing, or the technique that is used to improve a video quality, is supported only for the MPEG-2 videos, both on NTSC and PAL DVDs. A DVD Video disc has raw bitrates of 11.08 Mbits per second overhead, thus leaving payload bitrates of 10.08 Mbit per second. Of the value mentioned, about 3.36 megabits are used for subtitles while 9.80 megabits can actually be split among video and audio. However, one must know that in cases of multiple angles, its streams are not actually played in tandem. Rather, they are interleaved in a series, making the 9.80 megabits still useful for a specific angle.

The videos that are professional encoded has an average bitrate of about 3.5 Mbit per second, but can go as far as seven to eight Mbits per second for those high action scenes. These are done not only to enable better compatibilities amongst different DVD players, but also help in preventing buffer underrun in cases of dirty or scratched discs. Although a DVD can support a large number of different languages all at the same time, it is rarely practiced because everything menus, audio, and subtitles are added, it further reduces the bitrates that is intended for video. Because of this, discs are designed with no more than two languages.

The superbit version of the DVD that was created by Columbia Tristar was designed to maximize the quality of the picture of the video, by eliminating a number of languages, audio tracks, as well as the angles. Some DVD hardware and software players as well, can play discs that have MPEG files that does not conform to the average standards. This is commonly used to support the DVD discs that are authored with formats that include the VCD and the SVCD. While both the CVD and the VCD video is typically supported by DVD standards, neither SVCD video and audio, VCD and CVD is found compatible with the average standard for DVD.

Aside from the mentioned requirements, a DVD video is equipped with some other features like subtitles, chapters, audio commentaries, and some other documentary features of a particular movie.

When buying DVD video, you have to go to reliable distributors so that you will get the best qualities of a DVD Video. But before you do that, it is very helpful that you visit different websites online so that you may be able to see all the other options. Who knows, you might run some discounted DVD videos online?

Enjoy the pleasure of watching a movie with your DVD video right at the comfort of your home theater system. It is relaxing, it is fun, and it really feels as if you were inside a real movie house.