Difference Between Similar Terms and Objects

Difference Between DVD and Blu-Ray

DVD vs Blu-Ray

DVD was the inevitable nail in the coffin for the video format. Digital Video Disc is often shortened to DVD. A DVD is a small round disc with the capabilities of storing large forms of data. It is an ideal format that is often used to store both audio and visual data. A digital disc of this nature can be played on many different devices. The video player has long been replaced with the more convenient disc player. DVD players can be found in many different devices. There is the player that is used to watch films on your family television; there are portable players that include their own small screen and there are even players that can be used in your car to entertain on long journeys.

A DVD has a high storage capability. It has the capacity to hold ten times the information than that of a CD. A standard DVD is currently available in two formats; a 4.7 GB format and a 17GB format. Each of these sizes provides adequate space to hold hours and hours of entertainment. As well as coming already loaded with content, DVDs can be used as a recording medium. There are two recording formats for DVDs, the DVD-R and the DVD-RW. A DVD-R means you can record data onto the disc only once; the DVD-RW can record data over and over again.

Blu-ray discs are ultimately the new development in the storage of visual and audio data. Blu-ray discs look absolutely no different to a DVD, they are both small round portable discs of data. The main difference between the two is the visual and audio quality; A Blu-ray disc is able to provide the viewer with a 1920×1080 resolution. This is an extremely high level of HDTV quality and is currently unequalled in its vision.

In order to play your new Blu-ray discs you will need to update your DVD player to a Blu-ray player. An original DVD will not play on a blue-ray player; each player uses a different kind of laser to read the data. Blu-ray DVD players use a blue laser to read recorded data. The layer of data on a Blu-ray disc is placed considerably nearer to the lens than that of the red laser DVDs. The blue laser has a much shorter wavelength, resulting in the ability to significantly store more data. The storage capabilities of a Blu-ray disc are ten fold to that of its counterpart; the discs have the capacity to hold up to 50GB of visual or audio data.

A Blu-ray disc, just like a DVD, can be used to record visual and audio data. There are two main differences in the recording, the first being the quality. Recording on a Blu-ray disc will provide you with the quality of a high definition video; and because of the shorter space needed for information, your Blu-ray disc will hold up to 50GB of information. If you are looking for a sharper more defined picture and a disc that has an increased storage capacity it is essential to invest in Blu-ray rather than its inferior cousin, the DVD.


1.Both DVD and Blu-ray discs provide the ability to view visual and audio files.

2.The information on a DVD is read using a red laser and the data on a Blu-ray is read by a blue laser.

3.Storage capacity on a DVD is less than that of a Blu-ray disc.

4.Blu-ray discs provide a higher resolution of picture quality.

5.Blu-ray discs can hold up to 50GBs of information compared to only 17GB on a DVD disc.

6.Blu-ray discs are unable to be read by a normal DVD player and require a specialist machine.

7.Blu-ray discs are expected to be the eventual replacement for DVDs.

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1 Comment

  1. DVD stands for Digital Versatile Disc, DVD’s have many other uses other than the playing back of video

    They come in more than often 2 sizes, single layer 4.7gig and a dual layer 8gig, although there are two sided DVDs which are recordable on both sides, these are also available in 4.7 and 8 sizes.

    4.7 GB (single-sided, single-layer – common)
    8.5-8.7 GB (single-sided, double-layer)
    9.4 GB (double-sided, single-layer)
    17.08 GB (double-sided, double-layer – rare)

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