What you can do
Compress MP4 files locally with creator-friendly controls.
Best for
- Target MB option.
- Resolution presets.
- Quality control.
- Complete the core workflow directly in the browser with no unnecessary account step.
MP4 Compressor
Compress MP4 files locally with quality, resolution, frame-rate and optional target-size controls. No upload required for the core workflow.
Private processing
Your files never leave your device.
Processing happens privately in your browser.
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Privacy & processing
This workflow processes your own file or text on this device. AG Creator Tools does not upload private media for this local workflow.
Processing engine: Shared Video Processing Engine
How to use MP4 Compressor
- Choose an MP4 file.
- Set quality, resolution/frame rate and an optional target MB value.
- Compress locally.
- Review the size reduction and download the resulting MP4.
Inputs, outputs and useful limits
Input
A local MP4 file.
Output
A compressed MP4 file.
Important limits
- Performance depends on your browser, device memory, processor/GPU and the codecs used by the source file.
- Some MP4 codecs may decode but not re-encode on every browser.
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Common questions: MP4 Compressor
Can I compress an MP4 to a specific size?
You can enter a target MB value. Creator Kit estimates the bitrate needed, but the result is not guaranteed to land on an exact byte count.
Does this upload my MP4?
No. The MP4 processing path is local to your browser.
Should I lower resolution or quality first?
For a large size reduction, resolution usually has the biggest effect. For a smaller reduction, keep resolution and lower quality first.