Can any video reach 10 MB?

No. Duration, motion, resolution, and audio all matter. The workspace stops a target that leaves too little readable video bitrate and suggests trimming or choosing a larger limit.

Will compression use a server?

No. Unsupported local encoding is reported as a browser limitation rather than sent elsewhere.

Local video compressor

Make a video smaller with a clear quality target.

Choose Smaller, Balanced, or Higher quality—or set a practical file-size limit. The workspace estimates the trade-off locally before a browser-supported encode is attempted.

Your video stays on this device. No upload, account, or server-side processing job.

Browser-local workspace

Open the private video workspace when you are ready.

Choose one local MP4, M4V, MOV, or WebM file. JavaScript activates a browser-native preview and capability check; available conversions depend on the codecs supported by this device.

No upload, account, or server-side media job.

Open private workspace Loads only after you choose to open it.

Start with a useful size and quality choice

A size target must share its available bits across the full duration, video, audio, and container overhead. Very small limits can require a lower resolution or a shorter clip; a clear warning is more useful than silently creating an unusable file.

Measure an actual result

The compressor reopens the output and reports its real bytes, dimensions, duration, and codec facts. A requested bitrate or size is a plan, not proof, until the resulting file has been measured.

Private browser processing

Your video remains in your hands.

Aftermath reads selected video bytes only in the current browser. Unsupported codecs are reported clearly rather than sent to another service. High-resolution conversion can use substantial device battery and processing.

Read the processing boundary

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