A 16:9 television raster that stores 7680 by 4320 pixels, 33,177,600 samples in one frame. The number 4320 counts the active vertical lines. Marketing names this grid 8,000 Pixels (8K).
Each axis is double that of the 3840 by 2160 frame of 2160 Progressive (2160p), so the area is exactly four times that frame. That area is also exactly sixteen times a 1920 by 1080 picture: 1080 Progressive (1080p), also called Full High Definition (FHD).
Stored Frame and Pixel Count
The width follows the 16:9 shape once the vertical count is set, which fixes the stored width at 7680. This raster is a television grid, not a monitor mode in the way 1440 Progressive (1440p) is. That desktop step is also called Quad High Definition (QHD).
- Vertical count. The name uses the active line count, not the horizontal count.
- Doubled axes. A 2160p frame is 3840 by 2160. Doubling both axes produces 7680 by 4320, and the area is exactly four times that frame.
- Two steps up from 1080 lines. Each doubling multiplies the area by four, so two doublings multiply it by sixteen.
Progressive Scan and Frame Rate
In 4320p, the trailing letter means progressive scan: a full frame on each pass, rather than alternating fields. At the 1080-line height, the field-based counterpart is 1080 Interlaced (1080i).
- Full frame. Every pass carries all of the lines, so the picture is not assembled from two fields.
- Common rates. Where the equipment supports the raster, typical rates are 24, 30, and 60 Frames Per Second (FPS).
- Whole frames only. Those rates count complete pictures, not an interlaced field cadence.
Bandwidth and the Resolution Family
Bandwidth and storage are the practical constraint. At the same frame rate, this frame holds sixteen times the samples of a 1080p frame. A connection such as High-Definition Multimedia Interface (HDMI), and the storage behind it, has to carry that larger sample count before compression.
- Uncompressed load. The sixteenfold sample count is a sixteenfold increase in picture data when the frame rate matches and compression has not reduced it.
- Color volume. It often follows Recommendation BT.2020, the ultra-high-definition color specification associated with Ultra High Definition (UHD).
Shorter names in the table follow the same vertical count. Rasters of 480 and 576 lines are Standard Definition (SD). The interlaced 480-line raster is the digital form used with National Television System Committee (NTSC), and the interlaced 576-line raster is the digital form used with Phase Alternating Line (PAL). Rasters of 720 and 1080 lines are High Definition (HD) and, in broadcast use, High Definition Television (HDTV).
| Raster | Common Active Samples | Scan | Samples Versus a 1920 by 1080 Frame |
| 480 Interlaced (480i) | 720 by 480 | Fields | One sixth |
| 480 Progressive (480p) | 720 by 480 | Full frame | One sixth |
| 576 Interlaced (576i) | 720 by 576 | Fields | One fifth |
| 576 Progressive (576p) | 720 by 576 | Full frame | One fifth |
| 720 Progressive (720p) | 1280 by 720 | Full frame | Four ninths |
| 1080 Interlaced (1080i) | 1920 by 1080 | Fields | Same count |
| 1080 Progressive (1080p) | 1920 by 1080 | Full frame | Reference frame |
| Full High Definition (FHD) | 1920 by 1080 | Full frame | Same count as the 1080-line progressive row |
| 1440 Progressive (1440p) | 2560 by 1440 | Full frame | Sixteen ninths |
| Quad High Definition (QHD) | 2560 by 1440 | Full frame | Same count as the 1440-line row |
| 2160 Progressive (2160p) | 3840 by 2160 | Full frame | Four times |
| 4320 Progressive (4320p) | 7680 by 4320 | Full frame | Sixteen times |