The specs we build to

Eight placements, each with its own aspect ratio and length rules. The table shows what each platform accepts and the length we cut to, which is usually far shorter than the limit.

Aspect ratio, platform length limit and Seedand cut length for each supported ad placement
Platform	Placement	Ratio	Platform accepts	We cut to
TikTok	In-feed	9:16	9:16, 16:9 or 1:1 · up to 10 min	60s
Instagram	Reels	9:16	9:16 · up to 15 min	90s
Meta	Feed	4:5	4:5 recommended · 1s to 241 min	60s
Meta	Stories	9:16	9:16 · 1s to 3 min	60s
YouTube	Shorts	9:16	Vertical · under 60s recommended	60s
YouTube	In-stream	16:9	16:9 · no max (under 3 min recommended)	30s
LinkedIn	Feed	1:1	9:16 to 16:9 · 3s to 30 min	30s
Google	Demand Gen	16:9	16:9, 9:16, 1:1, 4:5 · varies by format	30s

Platform limits read from each platform's own ads guide on 13 October 2026. Full breakdowns for each placement are listed below.

What each spec does to your creative

TikTok In-feed

9:16 · cut to 60s

A 16:9 master loses 44% of its frame here. Shoot or generate vertical.

TikTok also accepts 16:9 and 1:1, but vertical is the ratio it recommends.

Instagram Reels

9:16 · cut to 90s

Meta's guide says to keep the top 14%, bottom 35% and 6% each side free of text and logos.

Shares the asset with Stories, but the safe zones differ slightly.

Meta Feed

4:5 · cut to 60s

Meta's guide recommends 4:5 at 1440 x 1800 for Feed video.

Headline guidance is 27 characters; primary text 50 to 150.

Meta Stories

9:16 · cut to 60s

Full bleed. Letterboxing reads as a repurposed ad and gets skipped.

Ads of 15 seconds or less play in full; longer ones split into cards.

YouTube Shorts

9:16 · cut to 60s

Vertical only. A horizontal upload is pillarboxed and looks lazy.

Competes directly with organic, so polish can hurt you.

YouTube In-stream

16:9 · cut to 30s

The one placement where 16:9 is correct rather than a compromise.

Five seconds before the skip. The offer has to land inside them.

LinkedIn Feed

1:1 · cut to 30s

Accepts 9:16 through 16:9. Square or 4:5 takes more feed height than horizontal.

Video can run 3 seconds to 30 minutes; captions matter because most of the feed plays muted.

Google Demand Gen

16:9 · cut to 30s

One asset set fans out across YouTube, Discover and Gmail at once.

Google recrops automatically, and rarely the way you would.

Full spec sheets by placement

Every number on these pages is read from the platform's own ads guide, with the source linked.

Built to fit, not cropped

Most tools render one master cut and squeeze it into every shape. We generate against the placement instead: the hook is written to the duration, the subject is framed for the ratio, and captions sit inside the safe zone. You can watch the frame change as you switch placements in the studio.

Start free See the concepts it produces