Resolution is the most misunderstood spec in video. "1080p" and "4K" get thrown around, but what do they actually mean — and which should you use? This guide explains it in plain English.
What "p" Means
The "p" in 480p, 720p and 1080p stands for progressive scan — every horizontal line of the image is drawn in order. The number is the height in pixels:
- 480p = 640×480 pixels (standard definition, old TV)
- 720p = 1280×720 (HD)
- 1080p = 1920×1080 (Full HD)
- 4K (2160p) = 3840×2160 (Ultra HD)
Resolution Comparison
| Label | Pixels | Total | Good for |
|---|---|---|---|
| 480p | 640×480 | ~0.3M | Old recordings, archive |
| 720p | 1280×720 | ~0.9M | Basic HD, older devices |
| 1080p | 1920×1080 | ~2M | Standard HD for YouTube and TV |
| 4K | 3840×2160 | ~8.3M | Large TVs, archiving, professional |
4K has about 16× the pixels of 480p — that's why upscaling low-res footage to 4K is such a big improvement.
Which Resolution Should You Use?
- Watching on a phone: 720p is usually plenty.
- Watching on a TV or YouTube: 1080p is the standard.
- Large 4K TV or future-proof archiving: 4K.
- Old low-res footage: upscale it with AI. See how to upscale 480p to 1080p and video upscaling explained.
Resolution Isn't Everything
Higher resolution doesn't automatically mean better video. A sharp 1080p video looks better than a soft, compressed 4K. Bitrate, codec and source quality matter just as much. See how to improve video quality for YouTube.
Can You Improve Resolution?
Yes — with AI upscaling you can convert 480p or 720p footage to 1080p or 4K while reconstructing real detail. EnhancePro AI does this on your Windows or Mac computer, and the free trial lets you test it on your own footage.
Improve Your Video Resolution with EnhancePro AI
Upscale 480p/720p to HD or 4K with AI — free trial for Windows and Mac.
Download Free TrialFrequently Asked Questions
Is 4K always better than 1080p?
On a 4K screen, yes. On a phone or 1080p monitor, the difference is small. 4K also needs far more storage and processing power.
What resolution should I upload to YouTube?
1080p is the standard; uploading 4K gives YouTube more bitrate to work with. See improve video quality for YouTube.
Can old 480p video be made 4K?
Yes, with AI upscaling. It won't match native 4K, but it looks dramatically sharper. See convert low-res video to HD.