Compress Video for X (Twitter)

Reduce video size for X posts with a compatible H.264 MP4 that uploads quickly and plays in the timeline.

▶Optimize for X (Twitter) Video

1. Target

Platform:

Recommended: 1920 × 1080 16:9 · H.264 · MP4 · 30 FPS · AAC 128 kbps

2. Select file

Select a video file

[ Browse... ] or drop a file here

Supported: MP4, MOV, WebM, M4V, AVI, MKV, 3GP.

X accepts H.264 MP4 most reliably, and its players are optimized for 1080p. A 4K 60fps phone file will be processed down anyway. We produce a lean 1080p H.264 master that posts fast and streams cleanly.

?About this preset

How it works

Upload your file
We analyze your file
We optimize it for X (Twitter)
Download your optimized file

Technical details

Property	Value
Recommended resolution	1920 × 1080
Aspect ratio	16:9
Format / codec	MP4 · H.264 + AAC
Frame rate	30 FPS
Video bitrate target	~6 Mbps (quality-based CRF)

Compression strategy

X's player favors H.264/MP4 and 1080p content.
We downscale larger sources to 1920 × 1080; vertical 9:16 video is preserved as-is.
Moderate bitrate (~6 Mbps) keeps uploads quick on mobile.
AAC audio at 128 kbps is enough for clear speech and music in the timeline player.

FAQ

What video format does X support best?

H.264 MP4 is the most reliable format for X. Vertical and horizontal video both work.

What resolution should my X video be?

1080p (1920 × 1080) is a safe maximum; larger files are processed down by X anyway.

Why did my X video fail to upload?

Usually a container or codec X won't take (like certain MOV/HEVC variants), or an oversized bitrate. Our H.264 MP4 preset avoids both.

Is the processing done on my device?

Yes — everything runs client-side in the browser.