Video resolution names like 1080p and 4K are everywhere, but they don’t mean what many people think. Knowing the actual pixel counts helps when you’re making thumbnails, screenshots or stills from video.
What the “p” means
The number before the “p” is the height in pixels, and the p stands for progressive scan, meaning every line is drawn in each frame. So 1080p is 1080 pixels tall. For standard widescreen video at 16:9, the width follows from the height.
Common resolutions
- 480p: 854 x 480. Standard definition, now low quality.
- 720p (HD): 1280 x 720.
- 1080p (Full HD): 1920 x 1080.
- 1440p (QHD or 2K): 2560 x 1440.
- 2160p (4K UHD): 3840 x 2160.
Cinema 4K is slightly wider at 4096 x 2160. 4K “UHD” for home TVs and most online video is 3840 x 2160.
Why “4K” breaks the naming pattern
The “4K” name refers to the roughly 4,000 pixels of width, not the height. It’s a marketing label, which is why 4K sits next to names like 1080p that count height. Same type of measurement, different direction.
How video resolution compares to photos
Every video frame is basically an image. Megapixels are width x height divided by a million:
- 1080p frame: about 2.1 megapixels
- 4K frame: about 8.3 megapixels
A modern phone photo, at 12 MP or more, has far more pixels than even a 4K video frame. So a still taken from video will usually have much less detail than a photo. For the megapixel math, see how many megapixels do you need.
Vertical video
Platforms like TikTok and Reels use vertical video, which flips the numbers: 1080 x 1920. See TikTok video size.
Why higher resolution isn’t always better
- Files get much larger and need more bandwidth.
- On a small phone screen, you can’t see the difference between 1080p and 4K.
- Compression, lighting and steady camera work affect perceived quality more than resolution.
Making thumbnails and stills
For a video thumbnail, design at 1920 x 1080 or the size the platform asks for. See the YouTube thumbnail guide. For a still from a video, expect softer detail than a camera photo and avoid printing it large. See increasing image resolution for limits on enlarging.
Screens and wallpapers
These resolutions also describe monitors. A 1080p screen has 1920 x 1080 pixels. If you’re choosing images for a desktop, see wallpaper sizes.
Setting up for calls? See the best Zoom virtual background size.
Scale any graphic to a video-friendly size with our free image resizer.