Keep recording and editing together. ScreenBuddy adds zoom, captions, and local MP4 or GIF export on Mac and Windows.
Download freeHow it works
Set your output
Choose the resolution and frame rate you are exporting or streaming at.
Pick a codec & motion
Newer codecs and calmer footage (like screencasts) need less bitrate.
Read the estimate
Use the result as a starting point, then test the output and check your destination’s current requirements.
What is a video bitrate calculator?
A video bitrate calculator estimates how many megabits per second an encoder should spend, and how large the finished file will be. This page combines resolution, frame rate, codec, motion, and duration into a starting Mbps value. Treat the result as a rehearsal number: encode a short sample, then confirm the destination’s current official guidance before the real export.
How to choose the right video bitrate
Bitrate is the amount of data your video uses per second of footage, measured in megabits per second (Mbps) or kilobits per second (kbps). It is the single biggest lever on the trade-off between visual quality and file size. Too low and you get blocky, smeary compression artifacts; too high and you waste storage and upload time for no visible gain.
The right number depends on how many pixels you are encoding, how many frames arrive each second, how efficiently the codec packs them, and how much the image changes. This calculator combines those inputs with a bits-per-pixel model. Treat the result as a starting estimate rather than a promise of quality or platform acceptance.
Resolution and frame rate
Doubling resolution roughly quadruples the pixels, and doubling frame rate doubles them again — both demand proportionally more bitrate. A 1080p60 clip needs noticeably more than 1080p30, and 4K needs far more than 1080p at the same settings.
Codec efficiency
Codec choice matters. H.265 (HEVC), VP9, and AV1 can often reach similar perceived quality at a lower bitrate than H.264, but encoding speed, device support, and playback compatibility differ. Confirm that the destination accepts the codec before choosing it.
Motion and complexity
Calm footage — a slide deck, a code editor, a static product demo — compresses extremely well and can use a lower bitrate. Fast motion, particle effects, or gameplay need more headroom to stay sharp. That is what the Low / Medium / High motion control adjusts.
Uploading and live streaming need a second check
Publishing services maintain their own current codec, bitrate, keyframe, resolution, and dynamic-range guidance. Live services may also impose ingest or account limits. Use this estimate to size the file and choose a starting encoder value, then confirm the destination’s official requirements before the final export or broadcast.
What bitrate should I use for YouTube or a landing-page demo?
Use the calculator for a first estimate, then read the platform’s current upload page for that exact resolution, frame rate, codec, and dynamic range. YouTube re-encodes every file. A product-demo landing page often cares more about sharp UI text than cinematic motion, so a lower-motion 1080p30 H.264 export can look clearer than a high-bitrate 4K file that still scales down in the player.
Need frame duration instead of Mbps? Use the FPS to milliseconds converter for 24, 30, and 60 fps timings. Match capture size with the screen resolution calculator. Quality settings: how to record your screen in high quality.
Recording a product walkthrough? ScreenBuddy for Mac and Windows adds auto-zoom, spotlight, lightbox, and free local MP4 or GIF export (watermarked until a one-time Lifetime purchase).
Frequently Asked Questions
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Plan the file, then polish the walkthrough
Use the estimate to plan delivery, then record and edit the walkthrough in ScreenBuddy. Preview small text and cursor movement before exporting the finished file locally.
Mac & Windows. Free download, no card. Export free with a watermark; one Lifetime payment removes it. Media processing stays on your device. Internet is required for account sign-in and update checks.