Pick a video bitrate for a target size
Fit a recording into a file size or a length — solve whichever of bitrate, size, duration is missing.
Tools used in this guide
The job
A platform caps uploads at 500 MB and your clip runs 12 minutes — what bitrate fits? size = bitrate × time is the whole trade, with the audio track eating part of the budget.
Any two of three
Fill two of total bitrate, file size, duration; optionally subtract an audio bitrate so the answer is the video budget alone.
Worked example
12 min (720 s) into 500 MB: ≈ 5.55 Mbps total; minus 128 kbps audio leaves ≈ 5.4 Mbps for video — comfortable for 1080p.
Where it stops
Decimal MB/GB and average bitrate only; container overhead (~1–3 %) and VBR peaks are not modeled, so leave headroom on hard caps.