How this calculator works
Enter the values for first value, second value and review the units before calculating.
Formula / method
File size = bitrate × duration ÷ 8
Worked example
8 Mbps for 60 minutes produces about 3.6 GB before container overhead.
Assumptions and limitations
Bitrate is sustained and decimal gigabytes are used.
Variable bitrate, audio tracks, metadata and codec/container overhead can change the final file size.