Video Frame Size Calculator

Created by Bogna Szyk
Reviewed by Małgorzata Koperska, MD and Adena Benn
Last updated: Aug 17, 2022

This video frame size calculator is a handy tool for determining the data size of an uncompressed video file. All you have to do is provide the resolution of your video and its color depth.

If you want to calculate the file size of a video that uses a particular compression standard, such as H.264 or HEVC, take a look at the video file size calculator.

How to calculate the video frame size?

A video frame is one of many images that the whole "moving picture" is comprised of. The data size of such an image depends on several parameters.

First of all, the size of a frame is connected with the resolution - the number of pixels that can be displayed. Resolution is usually expressed as the number of pixels in the horizontal and vertical dimensions. Each pixel is a piece of data to be saved; thus, the better the resolution, the bigger the frame size.

Secondly, the frame size depends on the color depth. This phrase means nothing else than the number of bits used to indicate the color of each pixel. For example, in 8-bit color depth, each pixel can have one of 2⁸ = 256 colors. If you choose to have a 16-bit color depth, you can encode 2¹⁶, that is, 4096 different colors.

The higher the color depth, the bigger the data size of every pixel. If you use 8-bit colors, each pixel has to store 8 bits of information (equivalent to 1 byte). A 16-bit color needs 2 bytes of information per pixel, while a 24-bit one needs 3.

Once you know the resolution and color depth, you can find the frame size according to the following equation:

frame size = V * H * CD

where

  • V is the vertical resolution;
  • H is the horizontal resolution; and
  • CD is the color depth.

Calculating a video file size

A video consists of many frames, shown one after another. As each image is visible only for a very short time (such as 1/24 of a second), they seem to blend together, forming a moving image. You can use this video frame size to calculate the total video size (assuming zero compression) according to the following formula:

video size = frame size * fps * time

where

  • time is the duration of the video, and
  • fps is the number of frames displayed per second. This number can range from 12 fps to even 60 fps; the most common value, however, is 24 frames per second.

Professionals tend to use compressed videos to decrease the video file size. Compression can be lossless (only redundant data is removed) or lossy (less critical information is removed). In practice, lossy compression is much more common - compromising on video quality is necessary in order to ensure lower data sizes.

Interested in video editing? Try our timecode calculator!

Bogna Szyk
Resolution
Horizontal pixels
px
Vertical pixels
px
Video characteristics
Video length
hrs
min
sec
Color depth
bit
Frame rate
fps
One frame size
MB
Total file size
GB
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