Video quality
What do 720p, 1080p, 2K and 4K mean?
A practical guide to resolution, source quality, and why a bigger label is not always a better download.
Resolution describes the picture dimensions
Video resolution describes how many pixels make up the image. In common progressive video labels, 720p and 1080p refer to the vertical pixel count. A typical landscape 1080p video has dimensions of 1920 by 1080 pixels. Portrait videos use a different orientation, so inspect both dimensions when comparing a vertical Reel with a landscape clip.
What about 2K and 4K?
The terms 2K and 4K are less exact when used as marketing labels. They usually describe families of resolutions based roughly on the horizontal pixel count. For example, consumer 4K UHD is commonly 3840 by 2160 pixels. Checking the actual width and height is more informative than relying on a label alone, especially for portrait videos.
You can only retrieve what the source provides
A downloader cannot recover an original resolution that the source does not make available. If a video is provided only at 720p, offering a 4K button does not create real 4K detail. Resizing a picture may increase its dimensions, but it does not recreate missing texture or sharpness. FB Downloader is designed to list resolutions detected in the source rather than promise every quality for every video.
More pixels are only part of quality
Two videos with the same resolution can look very different. Compression, video bitrate, motion, lighting and the quality of the original recording all affect the result. A heavily compressed 1080p clip may show more visible artifacts than a carefully encoded lower resolution version. File size also depends on duration and codec, not just resolution.
Choose a resolution that suits your screen
For casual viewing on a small screen, a smaller file may be sufficient. For fine text, detailed demonstrations or playback on a larger screen, a higher source resolution may help. Try a short playback check before keeping the file. If the highest quality arrives with no sound, the separate video and audio streams may need to be merged by the processing service.
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