When you download a video you usually see a list like 360p, 720p, 1080p and 2160p. Picking the biggest number feels safe, but it often means a file five or ten times larger than you need. Here is what those numbers really describe and how to choose well.
What the "p" numbers mean
The number is the height of the picture in pixels, for a normal horizontal 16:9 video. The "p" stands for progressive: every frame is drawn in full, as opposed to the old interlaced ("i") TV signals that drew alternate lines.
| Label | Pixels (16:9) | Common name | Rough size per minute* |
|---|---|---|---|
| 144p | 256×144 | - | 1–2 MB |
| 240p | 426×240 | - | 2–3 MB |
| 360p | 640×360 | SD | 3–6 MB |
| 480p | 854×480 | SD | 5–10 MB |
| 720p | 1280×720 | HD | 10–30 MB |
| 1080p | 1920×1080 | Full HD | 20–60 MB |
| 1440p | 2560×1440 | QHD / 2K | 40–120 MB |
| 2160p | 3840×2160 | 4K / Ultra HD | 100–350 MB |
*Sizes are typical for online video and vary with codec, frame rate and how much is moving on screen. A static slideshow is far smaller than a football match at the same resolution.
Vertical videos use the same labels
Shorts, Reels and TikToks are 9:16, so a "1080p" vertical video is 1080 pixels wide and 1920 tall. Sites label it by the shorter side so the numbers stay comparable. Many short-form clips are uploaded at 720×1280, which is why 1080p is not always offered.
Resolution is not the whole story
Bitrate
Bitrate is how much data is used per second of video. Two 1080p files can look very different if one has twice the bitrate. Streaming sites tune bitrate carefully, which is why a well-encoded 720p video can look cleaner than a starved 1080p one.
Codec
The codec is the compression method. H.264 is the most compatible. VP9 and AV1 deliver similar quality at smaller sizes, and they are what many sites use for 1440p and 4K. The catch: older phones, TVs and editing apps may not play them smoothly. See MP4 vs WebM vs MKV for how codecs and containers fit together.
Frame rate
Most videos run at 24, 25 or 30 frames per second. Gaming and sports are often 50 or 60 fps, which looks smoother but needs more data. If you see "1080p60", that is 1080p at 60 frames per second.
Which resolution should you download?
- Phone: 720p looks sharp on almost any phone screen and saves a lot of storage. Choose 1080p if you will cast it to a TV later.
- Tablet or laptop: 1080p is the sweet spot.
- TV over 50 inches or a 4K monitor: 1440p or 4K, when the source has it. Our 4K video downloader preselects 2160p.
- Lectures, podcasts and talking heads: 480p or even 360p is usually fine. If you only need the voice, save the audio as MP3 instead.
- Editing: download one step above your final output (for example 4K for a 1080p project) if you plan to crop or zoom.
Why you can't get more than the original
A downloader can only save what the site has. If a creator uploaded in 720p, there is no real 1080p version to fetch; tools that offer one are simply stretching the image, which adds file size but no detail. SaveVidr only lists qualities the source actually provides.
The same goes for older videos. Many uploads from the early 2010s top out at 480p or 720p, and nothing can restore detail that was never recorded.
Quick storage maths
If you are filling a phone before a trip, a rough rule helps: one hour of 720p is usually around 0.6 to 1.8 GB, while one hour of 1080p is roughly 1.2 to 3.5 GB. Ten hours of 4K could fill a 128 GB phone. Our guide to downloading videos for offline viewing has a fuller planning table.
A note on HDR
Some videos are also offered in HDR, which widens the range between dark and bright areas. HDR looks great on a compatible TV or phone, but on a standard screen it can appear washed out or dull. If colours look flat after downloading, pick the non-HDR version of the same resolution.
When in doubt, pick 1080p for big screens and 720p for small ones. You will rarely notice the difference, but your storage will.