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Compress MP4 Video

Re-encode MP4, MOV, or AVI video as MP4 with a low, medium, or high bitrate preset. The presets aim to reduce size, but an already efficient or low-bitrate source can produce the same size or a larger file.

Drop or paste a file to start.

Original Video

File name: {{ videoFile.name }}

File size: {{ inputSizeLabel }}

Choose a compression level to balance quality and size.

{{ option.label }}

{{ warningMessage }}

Time elapsed: {{ (elapsedTimeInSeconds / 1000).toFixed(2) }}s | Progress: {{ compressionProgressPercent.toFixed(0) }}%

Choose a video file to compress

We'll show the compressed output and download here.

Your compressed video will be displayed here.

Unable to compress the file. Please check the input and try again.

Working

Compressing video

Using the {{ presetLabel }} preset to build a smaller MP4.

{{ compressionProgressPercent.toFixed(0) }}%

Compression issue

We could not compress this video

Try another preset or a shorter source clip.

Compressed Video

File name: {{ result.name }}

File size: {{ resultSizeLabel }} (saved {{ compressionRatio }}%)

Compression summary

Review the output before download

{{ result ? 'Your smaller MP4 is ready in this panel.' : 'Start compression on the left, then download the smaller MP4 from this panel.' }}

Input size: {{ inputSizeLabel }}
Output size: {{ result ? resultSizeLabel : "Waiting for output" }}
Reduction: {{ result ? (compressionRatio ? compressionRatio + "% saved" : "Smaller output ready") : "Calculated after compression" }}

{{ result ? 'Download the compressed MP4 from this panel.' : 'The compressed MP4 appears here after processing.' }}

How to compress MP4 videos

Choose a video file

Select an MP4, MOV, or AVI file and choose a preset.

Download the compressed MP4

Export a smaller MP4 that is easier to upload or share.

Preset compression levels

Low, medium, and high presets make size control easy.

Audio preserved

Keep audio in your compressed MP4 output.

Fast compression

Optimized settings balance quality and speed.

Mobile-friendly

Compress videos on desktop or mobile.

Browser-based processing

Files stay on your device while the compressor runs.

No installs needed

Run the compressor with no extra software.

MP4 transcode

The output is a new MP4 at fixed preset bitrates. Compare its size and quality before replacing the source.

Frequently Asked Questions

You can compress MP4, MOV, and AVI files and export an MP4.

Compression trades some quality for smaller size. Choose the preset that fits your needs.

No. Compression runs in your browser on your device.

No. The presets use fixed bitrates. They often make large, high-bitrate videos smaller, but an already compact source can produce an output that is the same size or larger.

Need a hand with your file?

JPEGConvert.com keeps the workflow simple: upload, convert, and download. For the best results, start with the highest-quality source file you have.

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