What is MP4 used for?

MP4 is commonly used for: web embeds, product videos, social clips.

How do I optimize MP4 files?

Run "npx optimo video.mp4" in your terminal. Optimo applies format-specific compression to reduce MP4 file size while preserving quality.

What is MP4?

MPEG-4 Part 14 (container) (.mp4). The most compatible web video container; a safe default for delivery.

Last updated: 2026-03-18

MP4 (MPEG-4 Part 14 (container), .mp4) is a video container format that uses container compression. The most compatible web video container; a safe default for delivery. It supports animation. Common uses include web embeds, product videos, social clips.

Quick facts

Extension

.mp4

Type

Video container

Compression

container

Transparency

Animation

Yes

MIME type

video/mp4

Common uses

web embeds
product videos
social clips

Delivery notes

Strong default for delivery with predictable playback.
Consider WebM as an alternative for modern browsers.

What to do with optimo

Optimize MP4 Compress MP4 Resize MP4 Convert between formats

npx optimo video.mp4

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 Convert MP4 to AVI Convert OGV to MP4

Frequently asked questions

What is MP4?: MPEG-4 Part 14 (container) (.mp4) is a video format. The most compatible web video container; a safe default for delivery. It uses container compression and animation.
What is MP4 used for?: MP4 is commonly used for: web embeds, product videos, social clips.
How do I optimize MP4 files?: Run "npx optimo video.mp4" in your terminal. Optimo applies format-specific compression to reduce MP4 file size while preserving quality.