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UTL.toolsThe Digital Toolbox
Updated: August 2026 • Verified v1.2

Video Bitrate & File Size Target Calculator

Creative & DesignDesign

Local Browser Execution: Your input is processed locally in your browser and is not sent to UTL servers.
Target Video Bitrate (kbps) = ((Target_MB * 8 * 1024) / Total_Seconds) - Audio_Bitrate
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Understanding Your Results

Calculates target video bitrate in kbps and Mbps, accounts for audio stream overhead, displays ready-to-use FFmpeg CLI encoding flags, and warns if quality will be compromised.

Practical Guidance & Next Steps

Subtract audio bitrate (typically 128 kbps) from total available bandwidth to prevent file size overages.

What is this?

A media encoding utility that calculates target video bitrates given video duration and maximum upload file size.

How does it work?

1. Select platform preset (Discord 25MB, WhatsApp, Email) or enter custom size limit. 2. Enter video duration in minutes and seconds. 3. View recommended video bitrate and copy the FFmpeg CLI encoding parameters.

Why use it?

Ensures video exports never fail platform upload size limits.

Technical Scope & Calculation Limitations

Calculates two-pass average bitrate (VBR) targets.

Frequently Asked Questions

Enter the video duration, select the 25 MB Discord preset, and set the resulting video bitrate in your video export settings or HandBrake encoder.
Windows Desktop & Widget Options

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