Media calculator
Video Bitrate / Target File Size Calculator
Calculate the total and video bitrate available for a target file size, duration and audio bitrate.
How this calculation works
The target-size budget is converted to a total bitrate, then the selected audio bitrate is subtracted. A small safety margin is sensible because containers and encoders add overhead.
Good to know
Frequently asked questions
Should I use the exact calculated bitrate?
For a strict upload limit, leave a small margin for container overhead and encoder variation instead of using every calculated bit.
What if the video bitrate is negative?
The selected target cannot even hold the audio budget for that duration. Increase the target size, shorten the video or reduce audio bitrate.