HDX vs HD: Difference and Comparison

The world of the display is abundant with new technologies. Each advancement makes the older one a thing of the past.

HD, HDX, and UHD are among many of these advancements. While we use the terms interchangeably, there is a strict difference between them.

Key Takeaways

  1. HDX and HD refer to different levels of video quality, with HD standing for “High Definition” and HDX being a proprietary video format developed by Vudu, an on-demand video streaming service.
  2. HD video has a resolution of 1280 x 720 pixels (720p) or 1920 x 1080 pixels (1080p), offering improved image quality compared to standard definition (SD) video.
  3. HDX video format provides higher-quality video than traditional HD, with a resolution of 1080p and improved compression techniques that result in sharper images, more vibrant colors, and better overall visual quality.


The difference between HDX and HD is that HDX offers a minimum resolution of 1080 pixels and the best audio and video quality. In contrast, HD provides a minimum resolution of 720 pixels and is better quality than SD.

HDX vs HD 1

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HDX stands for High Definition Extra. It includes many technologies working simultaneously to provide a high-level user experience.


Comparison Table

Parameter Of ComparisonHDXHD
DefinitionHDX stands for High Definition Extra. It is a display enhancement technology for display panels.HD stands for High Definition. It is the successor of the SD display.
Horizontal LinesMore than 720 horizontal lines.More than 480 horizontal lines.
Resolution OfferedOffers a resolution of 1080 pixels.Offers a resolution of 720 pixels.
Visual and Audio QualityIt offers the best video and audio quality.It offers better video and audio quality than the SD.
Memory SizeMemory size is more than 1 Gigabyte.Memory size is more than 1 Terabyte.


What is HDX?

HDX is a modern display technology developed by Vudu. It offers excellent audio and video streaming services.

It offers a resolution of about 1080 pixels and more than 1 GB of memory. It encodes the video at twice the bit rate of that of HD.

Also, it can vary bit rates according to video scenes. It preserves the video streaming rate at 24 frames per second.

Adaptive technology uses a compression algorithm for enhanced visual display. Also, its touch-free feature offers a seamless experience to LAN and even WAN clients over large distances.

However, HDX also has some disadvantages. It takes more time to download a video than to stream it.


What is HD?

HD stands for High Definition. It is a display technology that has eclipsed the primary SD.

The NHK Broadcasting Corporation of Japan began researching HD technology in 1964. It created a new system called NHK colour in 1972.

The Society of Motion Pictures and Television Engineers became the world’s legal authority for HD technology. At its inception, it was headed by Charles Ginsburg.

The compression techniques were used because the uncompressed video used a lot of bandwidth. A video with HD quality downloads faster.

The unique feature of HD display is that it doesn’t depend on the screen size. The display will be called HD if the pixel is 1280 × 720.

Full HD or FHD is an enhancement of HD display technology. It has a pixel measurement of 1920 × 1080 pixels.


Main Differences Between HDX and HD

The HDX and HD are both display technologies. They enhance the visual and auditory effects of a video.

The main differences between the two are :

  1. HDX stands for High Definition on Extra, whereas HD stands for High Definition display.
  2. The HDX display has more than 720 horizontal lines, whereas the HD display has more than 480 horizontal lines.
  3. The HDX display offers a resolution of 1080 pixels, whereas the HD display offers a resolution of 720 pixels.
  4. The HDX display offers the best audio and video quality, whereas the HD display has better quality than the SD display.
  5. The HDX display occupies more than 1 Gigabyte of memory, whereas the HD display occupies more than 1 Terabyte.
Difference Between X and Y 2023 04 07T171842.572

  1. https://link.springer.com/article/10.1016/j.jasms.2008.11.019
  2. https://dl.acm.org/citation.cfm?id=2616183

Last Updated : 11 June, 2023

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