Estimate file size from average video/audio bitrate, or solve a video bitrate budget for a target size with explicit MB/MiB units.
Your input
Outputs are cleared when the input changes.
Result
Enter your data or use the example, then run the tool.
Worked example
60 seconds at 872 video + 128 audio kb/s totals 1000 kb/s and 7500000 bytes = 7.5 MB with zero overhead. Targeting 5 MiB at the same duration/audio gives a positive video budget of about 571.051 kb/s.
Method
Bytes = seconds × (video kb/s + audio kb/s) × 1000 / 8 + overhead bytes. Reverse the formula for video bitrate after subtracting overhead and audio; reject a nonpositive video budget. Display both decimal MB and binary MiB.
Limits
An average-bitrate planning estimate, not encoding or a size/quality guarantee. Duration 0.001 seconds–7 days, each bitrate up to 10000000 kb/s, size up to 10^15 bytes. Enter container overhead yourself; variable bitrate, headers and muxing can change actual size.
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