How do I optimize MP4 files?

Run "npx optimo video.mp4" in your terminal. Optimo applies format-specific FFmpeg-powered compression that reduces MP4 file size while preserving quality. The original file is kept if the optimized output is not smaller.

Is MP4 optimization lossless?

By default, optimo uses lossless optimization for MP4. For additional compression, add the --lossy flag to allow minor quality trade-offs for significantly smaller files.

What tools does optimo use for MP4?

Optimo uses FFmpeg under the hood with format-specific settings tuned for MP4 files.

Optimize MP4 for the web

The most compatible web video container; a safe default for delivery.

Last updated: 2026-03-18

To optimize MP4 videos, run npx optimo video.mp4. Optimo applies format-specific FFmpeg-powered compression that typically reduces MP4 file size by 15–40% without visible quality loss. The original file is kept if the output is not smaller.

Command

Start here. Run optimo on a video file:

npx optimo video.mp4

Tip: add --dry-run to preview changes.

When to use MP4

web embeds
product videos
social clips

Trade-offs

Encoding choices affect quality/size heavily

Related formats

WebM

Web-first video format that often compresses well and is common for modern browsers.

MOV

Common container from cameras and editing tools; typically converted for the web.

MKV

Flexible container used in many workflows; commonly remuxed/converted for delivery.

AVI

Legacy container format; usually worth converting to MP4/WebM.

OGV

Ogg video container; occasionally used for open formats, but uncommon today.

Related conversions

Convert GIF to MP4 Convert MOV to MP4 Convert MKV to MP4 Convert AVI to MP4 Convert MP4 to WebM Convert WebM to MP4 Convert MP4 to MOV Convert MP4 to MKV

More for MP4

Compress MP4 Resize MP4 What is MP4?

Compare formats

If you're picking a delivery format, comparisons can help.

MP4 vs WebM

Frequently asked questions

How do I optimize MP4 files?: Run "npx optimo video.mp4" in your terminal. Optimo applies format-specific FFmpeg-powered compression that reduces MP4 file size while preserving quality. The original file is kept if the optimized output is not smaller.
Is MP4 optimization lossless?: By default, optimo uses lossless optimization for MP4. For additional compression, add the --lossy flag to allow minor quality trade-offs for significantly smaller files.
What tools does optimo use for MP4?: Optimo uses FFmpeg under the hood with format-specific settings tuned for MP4 files.