Filed Under: Comparisons, Multimedia

Blu-ray vs. DVD | Differences Between DVD and Blu-ray Technologies


Written by Jack Lin

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Blu-ray vs DVD

What are DVD and Blu-ray? What are the differences between DVD and Blu-ray technologies? If you are searching for an answer to these questions, then you have arrived at the right place.

In this article, we have covered in detail the difference between Blu-ray vs. DVD.

Before digital streaming platforms like Amazon, Netflix, and Hulu, the home entertainment market was dominated by Blu-ray and DVD (Digital Video Disc) players. Blu-ray discs are optical discs that are produced by Blu-ray Disc Association (BDA). It is a major consumer electronics industry that collaborated to create a technology. 

Today, amid technologies’ rapid growth and a continuous surge in functions interchange, people’s attachment to DVDs and Blu-ray discs are still there.

Even though the vast majority are inclined towards new streaming platforms for home entertainment, we cannot ignore the need for DVDs and Blu-ray discs. They perfectly co-exist with the latest streaming platforms for quite some time now.     

Let’s Figure Out The Differences Between DVD and Blu-ray Technologies   

Therefore, in this article, we have covered the major points that make a difference between Blue-ray and DVD. You will learn in-depth about DVD and BLu-ray and their difference.

Plus, you will learn why Blu-ray is more beneficial than DVD. We have included the advantages of Blu-ray. In-depth information regarding Blu-ray and DVD includes the format, laser technology, video resolution, storage capacity, and many more.

Every technology-based company improves audio and video resolutions that make it hard for buyers to choose a product. The mechanism and function across all businesses are the same, with slight differences.

That is why you must know thoroughly about the product before buying them. There is always a chance to get a better product at the same price. Read on to know about Blu-ray Vs. DVD and the differences between DVD and Blu-ray.

PS: here are the best laptops with DVD Players for you to choose from.

Blu-ray vs. DVD | What is DVD?

blu ray vs dvd

DVD is an acronym for Digital Video Disc, which is used to convert and store video, audio, and other digital data into a compacted digital disc. In other words, DVDs can store any computer files and folders including, images, files, videos, etc. It is a successor of CD-ROM and has rapidly accepted by the mass due to its large storage size, and quality audio and video resolution.

If we go back further in the past, VHS cassettes were popular, which were then replaced by CD-ROM, and eventually, DVD made its huge marketplace. No doubt that DVD is better in all aspects compared to VHS cassettes and CD-ROM. Plus, the reason that audio and video are better on DVD is that it is based on laser technology.

Blu-ray vs. DVD | What is Blu-ray?

blu-ray Disc

Similar to CDs and DVDs, Blu-ray is used for storing and converting computer files or digital files into digital discs. However, the storage capacity of Blu-ray is much more than DVD, and so is the audio and video quality. It can easily contain high-resolution movies, music videos, and even video games.

It is based on blue-laser technology and reads a large amount than that of a DVD. On the contrary, DVD is based on red-laser technology. Its large data storage capacity and high-quality audio and video features stand out among all the other disk formats. The first choice of most people is undoubted Blu-ray.

Now that we have learned in detail about Blu-ray and DVD. Let’s head towards the differences between DVD and Blu-ray technologies – Blu-ray vs. DVD. 

Blue-ray vs. DVD

We have included many aspects in which these two disk formats differ from each other. Let’s look at the major points that make Blu-ray different from DVD. 

Format Features

The Blue-ray features are undoubtedly greater than DVD. Below we have listed some of the key features of Blu-ray and DVD. 

Blu-ray Features DVD
Storage (dual/single layer)50 GB/ 25 GB8.5 GB/ 4.7 GB
Video bit rate40.0 Mbps9.8 Mbps
Laser type405nm (blue laser)650nm (red laser)
Video resolution1920 x 1080 (1080p)720 x 480 (480i/ 480p US )
Data transfer rate54.0Mbps10.08 Mbps
Audio codecs Linear PCM
Dolby Digital
Dolby Digital Plus
DTS Digital Surround
Dolby TrueHD
Linear PCM
Dolby Digital
DTS Digital Surround
Video codecs MPEG-2
Interactive Features BD-J (BD-Java)DVD-Video

Storage Capacity

Storage capacity is the major difference between DVD and Blu-ray – Blu-ray vs. DVD. Blue-ray can store a huge amount of data as compared to DVD. We have mentioned above in the ‘Format Features’ section, Blu-ray can store up to 50 GB of data, whereas the data storage capacity of DVD is only up to 8 GB.

The DVD storage ranges from 4.7 GB to 8 GB depending upon the price of the DVD. You cannot store more than two movies on DVD due to its small data capacity. It is perfect for music videos, images, or documents.

For instance, if you bought a 4.7 GB DVD for a movie and in case, the movie lasts longer than expected then you need to use a double-layered DVD or two DVDs to store the full movie. That is why Blu-ray is preferably a better option if we consider the storage capacity of the two.  

Video Resolution

Video resolution defines the video image quality and how the video appears when the DVD is played. The default video resolution for a DVD is 720 x 480 quality. The DVD video quality comes under the Standard Definition of video quality. The DVD contains the basic video resolution, which is why you cannot store high-quality resolution video.  

On the other hand, Blu-ray contains a 1980 x 1080 quality video, which falls under the high-resolution video. It enhances the video images and offers you to experience excellent video quality with a 1080HD resolution. In addition, the latest blu-ray HD ultra (4k ultra HD) can easily play 4k videos with the help of a blu-ray 4k UHD device.

blu ray vs dvd -  Video Resolution

This is another reason why people generally prefer Blu-ray discs over DVDs. Ultra HD discs are available at an affordable price and thus attracts a huge buyer.    


The DVD supports three formats in audio which are Linear PCM, Dolby Digital, and DTS Digital Surround. Whereas the Blu-rays disc contains six audio formats, which include Dolby Digital Plus, DTS-HD, and Dolby TrueHD, in addition to the formats supported by DVD.

DTS-HD and Dolby TrueHD are not fully audio formats. These two are the clones of the actual soundtrack that allows you to experience home theatre audio. 

In other words, Blu-ray is based on technology that is effective and efficient and enhances your experience. The audio and video quality both stands out compared to other disc formats. 

Laser Technology

Both Blu-ray and DVD are based on laser technology and read the data with the help of it. The DVD uses a red laser that has a 650mn wavelength to read the data.

On the other hand, Blu-ray uses a blue laser that requires a 405nm wavelength in order to read the data. The small wavelength readability allows the Blu-ray to fetch the data more effectively and closely. 

Color Space

The other major difference between DVD and Blu-ray is the color space. Color space defines how the color ranges, how these colors are organized, and how the disc reproduces and arranges the color digitally.

The quality of the video also depends on the image color. If the color space of the device is larger, the image quality will be better.     

Color Space

Disc Construction

Blu-ray discs and DVDs might look the same with bare eyes, but if you look closely, you will see the groves of the Blu-ray are closer to one another and are thinner. This allows Blu-ray to fetch quick and precise data and show the results. Plus, this quality enables Blu-ray to store a huge amount of data. Also, compared to DVD, Blu-ray is more scratch-resistant.   

Data Transfer

Till now, you must have known which one would be the better option in respect of data transfer. We have mentioned earlier, that the transfer rate of DVDs is 10.08 Mbps (megabits per second) for video or audio. On the other hand, the data transfer rate of Blu-ray is 54 Mbps which is five times of DVD.


In terms of security, Blu-ray is obviously more secure than DVD. There is a major difference between DVD and Blu-ray in terms of security.


The Blu-ray discs are capable of playing DVDs. However, DVDs cannot play Blu-ray discs.

Is DVD Still Relevant?

Do you think this is the time to throw out all your DVDs? Maybe not! In case you believe that the Blu-ray player can easily play DVDs and there is no need to buy DVDs, then you are mistaken. There is a reason people are still purchasing DVDs even though Blu-ray is the better option. Why do you think it is that? It is because of its price.

The DVD is affordable and much cheaper than Blu-ray discs. If you just want to store or transfer your files and folders, then DVD serves the best purpose. Generally, people don’t buy an expensive external storage device just to store files and folders.

Plus, if you are okay with the lower quality of the image or the movie, DVD is undoubtedly the best choice for it. There is also a possibility that you won’t find the movie in Blu-ray format.

Frequently Asked Questions (FAQs)

FAQ 1: Can I play DVDs on a Blu-ray player?

Yes, most Blu-ray players are backward compatible and can play DVDs. This feature ensures that you can still enjoy your DVD collection even if you upgrade to a Blu-ray player.

FAQ 2: Are Blu-ray discs more expensive than DVDs?

Yes, Blu-ray discs are generally more expensive than DVDs due to their higher storage capacity and superior video quality. However, the prices have become more affordable over the years as Blu-ray technology has become more widespread.

FAQ 3: Can a DVD player play Blu-ray discs?

No, DVD players are not compatible with Blu-ray discs due to differences in the technology used to read and write data. To play Blu-ray discs, you will need a Blu-ray player.

FAQ 4: Do I need a special TV to watch Blu-ray movies?

While having a high-definition television (HDTV) is ideal for fully enjoying the benefits of Blu-ray technology, it is not a strict requirement. You can still play Blu-ray discs on standard-definition TVs; however, you may not experience the full extent of the improved video quality.

FAQ 5: Can I convert my DVDs to Blu-ray?

No, it is not possible to convert DVDs to Blu-ray. DVDs and Blu-ray discs have different storage capacities and video resolutions, making direct conversion impossible. However, you can rip the content from DVDs and create Blu-ray-compatible files if you want to have a digital copy.

FAQ 6: Are there any other advantages of Blu-ray over DVDs?

Yes, besides higher video and audio quality, Blu-ray discs offer additional features such as interactive menus, bonus content, and support for 3D movies (depending on the specific player and disc). These features enhance the overall viewing experience.


Till now, you must have guessed which is one is the better option between Blu-ray and DVD. If we look into all the aspects above, Blu-ray is the one that you must go for. Blu-ray offers you high-resolution videos, large storage capacity, home theatre audio quality, security, and better compatibility than DVD players. However, Blu-ray is expensive compared to DVD.

Due to its video and audio quality, features, and blue laser technology, Blu-ray costs considerably more than DVD. If you don’t care about the quality of the video and want a cheap disc format, then you must go with a DVD.

Another major difference between DVD and Blu-ray is that you can play DVD on a Blu-ray player. However, Blu-ray discs only support Blu-ray players.

In short, DVD has not been completely swiped out by Blu-ray discs. Many people prefer DVD over Blu-ray because of its price. This is the reason why DVD is still there on the market. If you have questions regarding this topic, comment down below and let us know.  


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