What is a key difference between standard definition (SD) and high definition (HD) video?

High definition (HD) video is characterized by a higher resolution compared to standard definition (SD) video, which translates to improved image quality. The distinction in resolution is significant; HD typically offers resolutions such as 720p (1280x720 pixels) or 1080p (1920x1080 pixels), while SD resolutions like 480p (720x480 pixels) provide far fewer pixels. This increase in pixel count in HD video results in clearer, sharper images with greater detail, making the viewing experience more enjoyable, especially on larger screens where the limitations of SD become more apparent.

While SD video can require less processing hardware due to its lower resolution, this is not the primary distinguishing factor between the two formats. The bitrate of HD video is generally higher than that of SD video, not lower, which also underscores the difference in their respective qualities. Additionally, the statement about SD video being mostly used for live broadcasts does not accurately capture the broader usage of SD, as it has been largely overshadowed by HD in most modern broadcasting and media consumption practices.