Concrete user question
Approximately how large is a 60-second file with 10 Mbps video and 192 kbps audio?
Tool
Video File Size Estimator
Estimate payload size from duration plus selected video and audio bitrates before rendering.
It makes the bitrate-duration trade-off visible without claiming an exact encoded file size.
Payload estimate
Working calculator
TEST
72.9 MiB
Estimate
72.9 MiB
Constant bitrates without container overhead; the real export can differ.
Length
60 s
Video
10 Mbps
Audio
192k
Transparent calculation examples
Calculation modelESTIMATE
One-minute example · 10 Mbps
72.9MB
1.0 min with 10.0 Mbps video and 192 kbps audio.
Duration60s
Start
Middle
End
Video stream
10.0 Mbps
Audio stream
192 kbps
Accuracy
Estimate
Estimated payload size
72.9 MB
Estimate excludes container overhead, metadata and VBR variance. Real exports can differ materially.
No platform limit is built in. Check the current limit for the exact account and upload destination in its official documentation.
How the calculation works
Reviewed: 2026-07-20Worked example
Example: (10,000,000 + 192,000) bits/s × 60 ÷ 8 gives 76,440,000 bytes, shown as about 72.9 MiB.
Method
Enter duration, video bitrate and audio bitrate. The calculator adds both streams, multiplies by seconds and converts bits to bytes.
Open formula
bytes = duration seconds × (video Mbps × 1,000,000 + audio kbps × 1,000) ÷ 8.
Limitations
This is a constant-bitrate payload estimate. Container overhead, metadata and variable-bitrate behaviour are not predicted; the real file can differ materially.
Next verification step
Export a representative range with the intended settings and compare its measured size before rendering the full duration.
Common presets
These are transparent calculation examples, not guaranteed platform or FreeCut presets.
One-minute example
60 s · 10 Mbps · ≈72.9 MiB + overhead
Five-minute example
300 s · 12 Mbps · ≈436 MiB + overhead
Ten-minute example
600 s · 8 Mbps · ≈586 MiB + overhead
When to use it
- Estimate a review file before sending it to a client.
- Compare two bitrate plans for the same duration.
- Work backwards from a receiver's documented upload budget.
Use it inside FreeCut
Use the result as a planning value and compare it with the options actually visible in FreeCut 1.3 and the destination's requirements.
FAQ
FAQ
Does the estimate include audio?+
Yes. The entered audio bitrate is added to the entered video bitrate.
Why is the exported file different?+
Real encoders can vary bitrate by scene and add container data. Measure a test export for a delivery decision.
Cut, calculate, export — in one app.
Use the documented FreeCut 1.3 export controls and verify the result against your actual destination. No forced FreeCut watermark.