Video Frame Size Calculator

Video file sizing relies on a foundational set of digital equations that connect spatial resolution, temporal frequency, and color information. First, a single image frame's digital footprint is determined by multiplying its vertical pixels, horizontal pixels, and color depth (measured in bits per pixel): frame_size = vertical × horizontal × color_depth. To find the total uncompressed file size, we factor in temporal variables using the formula: File_size = frame_size × frame_rate × time. By rearranging these formulas, this calculator allows you to solve for any missing variable, giving you complete control over bitrate allocations, resolution targets, and recording times.

Imagine you are tasked with calculating the uncompressed file size for a short video clip. You have a horizontal resolution of 1920 pixels, a vertical resolution of 1080 pixels, and a standard color depth of 24 bits per pixel. Your clip runs at a frame rate of 30 frames per second for a total duration of 10 seconds. First, calculate the single frame size: 1920 × 1080 × 24 = 49,766,400 bits per frame. Next, factor in the frame rate and time to find the total file size: 49,766,400 bits/frame × 30 frames/second × 10 seconds = 14,929,920,000 bits. Converting this to megabytes by dividing by 8 (to get bytes) and then by 1,048,576 yields approximately 1,778.6 MB or about 1.78 GB for just 10 seconds of uncompressed video data.

Keep these best practices in mind when estimating video dimensions and file capacities: First, always remember that raw, uncompressed calculations yield significantly larger file sizes than modern delivery formats like H.264 or HEVC, which use advanced inter-frame compression. Second, pay close attention to color depth specifications; moving from standard 24-bit color to 10-bit HDR formats (often totaling 30 bits per pixel or higher) dramatically increases your overall data rate. Finally, account for audio data tracks separately, as video frame size equations traditionally calculate visual data streams alone.