Facebook video ad specs 2026: sizes, ratios and lengths

Every Facebook video placement in one table: aspect ratio, resolution, length and text limits.

Based on Facebook's published guidance as of October 2026. Specs change, so confirm in the platform's ad help center before launch.

Placement	Ratio	Resolution	Length	Primary text
Feed ad	`4:5 / 1:1`	1080×1350	1 s – 241 min (≤15 s best)	125 characters primary

Skills that render Facebook-ready videos

Install one in your agent and export the formats these placements need.

I didn't expect this to work

What size should a Facebook video be?

Feed ad: 4:5 / 1:1 at 1080×1350.

How long can a Facebook video be?

Feed ad: 1 s – 241 min (≤15 s best).