How much space a video takes from bitrate and duration.
An hour and a half of video at 8 Mbps takes 5.4 GB: 3.6 GB per hour or 60 MB per minute. The calculation uses the total bitrate, that is video plus audio.
Estimates the size of a video from its total bitrate (video plus audio) and duration. With variable bitrate, use the average value.
GB = Mbps × 60 × minutes / 8000Estimates the size of a video from its total bitrate (video plus audio) and duration. With variable bitrate, use the average value.
All amounts use the same currency of your choice. These are estimates, not measurements or offers.
Work out how much space a recording, an export from your editor or a live stream will take before you run out of room. Use the total bitrate shown by your camera, OBS or editing software; if it lists video and audio separately, add them up.
As a guide, YouTube recommends about 8 Mbps for uploading 1080p video at 30 fps and 35 to 45 Mbps for 4K. Cameras record at much higher bitrates, so an hour of 4K can exceed 40 GB. Leave some margin: files with variable bitrate can differ quite a lot from the average.
In VLC, under Tools → Codec Information; in Windows, Properties → Details shows the total bitrate.
With variable bitrate, simple scenes use less data than the configured average.
6000 kbps is 6 Mbps: about 2.7 GB per hour.