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By PURPLELEC | 26 June 2024 | 0 Comments

The difference between SD, HD and FHD

  Standard Definition (SD), High Definition (HD), and Full High Definition (FHD) are different standards for video resolution, and the main difference between them is the clarity and detail of the image.
  1. Standard Definition (SD)
  • The resolution of SD video is usually 480p (720x480) or 576p (720x576), depending on the TV standard (NTSC or PAL) used in the region.
  • This resolution is suitable for traditional TV signals and some early video equipment, such as VCD and some DVD players. • SD video has relatively low picture quality and limited detail.
  2. High Definition (HD)
  • The resolution of HD video is usually at least 720p (1280x720) or 1080i/p (1920x1080).
  • 720p refers to progressive scan with 720 lines per frame, while 1080i and 1080p refer to interlaced scan and progressive scan with 1080 lines per frame, respectively.
  • HD video provides clearer pictures, more details and richer colors than SD.
  3. Full HD (FHD)
  • The resolution of full HD video is fixed at 1920x1080, usually referring to 1080p progressive scan mode.
  • This resolution is currently the most common and widely accepted HD standard, which can provide very delicate and high-definition images.
  • Full HD video has a higher resolution than HD video, so it can show more details.
  With the development of technology, there are now Ultra High Definition (UHD) and 4K resolution (3840x2160 or 4096x2160), as well as 8K resolution (7680x4320), which provide higher clarity and detail than full HD. But SD, HD and FHD are still the main standards supported by many video content and devices.

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