Common standard rates: 23.976, 24, 25, 29.97, 30, 59.94, 60
Please enter valid numeric values for duration and a positive frame rate.
Calculation Results
Total Time Count: 0 seconds
Total Frame Count: 0 frames
function calculateVideoFrames() {
// Get input elements
var hoursInput = document.getElementById('vfrc-hours');
var minutesInput = document.getElementById('vfrc-minutes');
var secondsInput = document.getElementById('vfrc-seconds');
var fpsInput = document.getElementById('vfrc-fps');
var resultDiv = document.getElementById('vfrc-result');
var errorMsg = document.getElementById('vfrc-error-msg');
var totalSecondsSpan = document.getElementById('vfrc-total-seconds');
var totalFramesSpan = document.getElementById('vfrc-total-frames');
// Parse values, defaulting to 0 if empty
var hours = parseFloat(hoursInput.value) || 0;
var minutes = parseFloat(minutesInput.value) || 0;
var seconds = parseFloat(secondsInput.value) || 0;
var fps = parseFloat(fpsInput.value);
// Reset error state
errorMsg.style.display = 'none';
resultDiv.style.display = 'none';
// Validation
if (hours < 0 || minutes < 0 || seconds < 0 || isNaN(fps) || fps <= 0) {
errorMsg.style.display = 'block';
return;
}
// Calculate total duration in seconds
var totalDurationSeconds = (hours * 3600) + (minutes * 60) + seconds;
// Check if total duration is valid
if (totalDurationSeconds <= 0) {
errorMsg.innerText = "Please enter a total duration greater than zero.";
errorMsg.style.display = 'block';
return;
}
// Calculate total frames based on pure math (Duration * FPS)
// We round to the nearest whole frame because you cannot have a fraction of a final frame.
var totalFrames = Math.round(totalDurationSeconds * fps);
// Display results
totalSecondsSpan.innerText = totalDurationSeconds.toFixed(2);
// Format frame count with comma separators for readability
totalFramesSpan.innerText = totalFrames.toLocaleString();
resultDiv.style.display = 'block';
}
Understanding Video Frame Rates and Frame Counts
For video editors, animators, and digital imaging technicians, understanding the relationship between time duration and frame rate (FPS) is crucial for accurate project management, synchronization, and workflow planning. This Video Frame Rate Calculator helps determine the exact number of individual images (frames) that make up a specific duration of video footage.
What is Frame Rate (FPS)?
Frame Rate, measured in Frames Per Second (FPS), denotes the frequency at which consecutive images appear on a display. It is the heartbeat of video playback.
24 FPS: The standard for cinema, giving movies their distinct "film look."
30 FPS (or 29.97 NTSC): standard for broadcast television in North America and Japan.
25 FPS (PAL): The standard for broadcast television in Europe and many other parts of the world.
60 FPS (or 59.94 NTSC): Often used in high-definition sports broadcasting and video gaming for smoother motion.
Why Calculate Total Frames?
Knowing the total frame count is essential in various scenarios:
Animation Workflows: Animators often work by frame count rather than timecode. Knowing that a 10-second shot at 24fps requires exactly 240 drawn frames is vital for budgeting workload.
Visual Effects (VFX): VFX artists need precise frame ranges when exporting clips to external software for compositing.
Storage Estimation: While file size depends heavily on bitrate, knowing the total number of frames is the first step in understanding the scope of raw footage data.
How the Calculation Works
The mathematics behind calculating total frames is relatively straightforward. It is the product of the total duration in seconds multiplied by the frame rate.
Total Frames = Total Duration (in Seconds) × FPS
For example, if you have a video clip that lasts for 1 minute and 30 seconds (a total of 90 seconds) shot at the cinematic standard of 24 FPS:
90 seconds × 24 FPS = 2,160 Total Frames.
If that same 90-second clip was shot at a higher broadcast standard of 60 FPS for smoother motion:
90 seconds × 60 FPS = 5,400 Total Frames.
Note: This calculator uses pure mathematical frame counts based on the inputs provided. It rounds the final result to the nearest whole frame, as digital video files contain integer counts of frames.