Center estimate
15 MB
Before the planning range is applied.
Free app marketing library
Video size planning
App Video Compression Estimator
Estimate output size, reduction range, bytes per minute, and upload time from your duration and bitrate choices.
Choose a video to fill in local facts
MP4, MOV, WebM, and M4V files work best. The file is inspected on this device and is never uploaded.
Local-only check. No video upload or account required.
Your planning scenario
Enter duration and bitrate choices
Bitrate is the amount of video or audio data used each second. This calculator shows the math instead of claiming an exact encode.
Transparent estimate
14 MB to 16 MB
The center estimate is bitrate × duration ÷ 8. The range adds eight percent in either direction for planning variation.
Data per minute
30 MB
At the selected combined bitrate.
Size change range
65.2% to 70.3%
Negative means this scenario could be larger than the original.
Estimated upload time
11.4s to 13.4s
Network overhead and connection changes are not included.
Estimate only. This tool does not transcode, compress, repair, upload, or create a video file.
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How to use it
Compare encoding scenarios without changing your file.
Select a local video when you want its duration and original size filled in, or type both values yourself. Your video stays on your device.
Try a video bitrate and audio bitrate, then use the range for storage and transfer planning. The result is arithmetic, not a promise of encoder quality or exact output size.
Questions
What to know before you use it.
Will the final file be exactly this size?
No. It estimates a likely size from duration and your selected video and audio bitrates. Different encoders and containers can land outside the shown eight-percent planning range.
Does this tool compress my video?
No. A selected video is read only on your device to fill in duration and original size. The tool never uploads, changes, or saves the file.
What should I enter?
Choose a file for local facts or enter duration and original size yourself. Then adjust the bitrates and your upload speed to compare a planning scenario.
Ready to make the ads?
Keep planning free. Use ClipStitchr when it is time to produce.
ClipStitchr is paid software for organizing reusable footage and turning it into finished short-form ads.