Question 1

How is GoPro file size calculated?

Accepted Answer

File size is estimated from the selected mode’s bitrate (Mbps) and recording duration. Size in bytes ≈ bitrate × duration_in_seconds × 1,000,000 / 8.

Question 2

Where do the bitrate values come from?

Accepted Answer

Bitrates are derived from official GoPro microSD capacity tables for each HERO Black model. Newer cameras use variable bitrate, so values are typical averages and real files can be larger or smaller depending on the scene.

Question 3

How much recording time fits on an SD card?

Accepted Answer

Recording time is estimated by dividing usable card capacity by the selected bitrate. Pick a preset card size (or enter a custom GB value) to see how long you can record in the current mode.

Question 4

Which GoPro cameras are supported?

Accepted Answer

HERO5 Black through HERO13 Black, including resolution, aspect ratio, frame rate, and bitrate mode options available for each camera.