Video ad sizes and lengths for Reels, TikTok, YouTube and Facebook
Updated October 13, 2026 · 5 min read
In short
Use 9:16 vertical video at 1080×1920 for Instagram Reels, Stories, TikTok and YouTube Shorts; 4:5 (1080×1350) or 1:1 (1080×1080) for the Facebook and Instagram feed; and 16:9 (1920×1080) for YouTube and websites. Keep short-form ads roughly 6–30 seconds and put the main message in the first two seconds.
Sizes by platform
| Placement | Aspect ratio | Recommended resolution | Typical ad length |
|---|---|---|---|
| Instagram Reels & Stories | 9:16 | 1080 × 1920 | 6–30 s |
| TikTok in-feed | 9:16 | 1080 × 1920 | 9–34 s |
| YouTube Shorts | 9:16 | 1080 × 1920 | 15–60 s |
| Facebook & Instagram feed | 4:5 or 1:1 | 1080 × 1350 / 1080 × 1080 | 6–20 s |
| YouTube (in-stream), websites | 16:9 | 1920 × 1080 | 15–60 s |
| LinkedIn feed | 1:1, 4:5 or 16:9 | 1080 × 1080 and up | 15–30 s |
Platforms update their specs regularly; check each ad manager's current guidance before a big campaign. Lengths above are common practice for performance ads, not hard limits.
Keep text inside the safe area
On vertical placements the app overlays buttons, captions and profile info at the top and bottom of the screen. Keep logos, prices and calls to action away from the edges — AdHub keeps important content inside an 8% margin on every side for this reason.
Design for sound off, reward sound on
Many people watch with the sound off at first, so the message must work as on-screen text. Add music or a voice-over for those who turn sound on, and use captions when someone is speaking.
One ad, several formats
Rather than cropping a 16:9 video into a vertical one, re-compose each format so text stays large and readable. With AdHub you pick 9:16, 4:5, 1:1 or 16:9 and the scenes are laid out for that shape.
Quick checklist
- MP4 (H.264) with AAC audio is accepted almost everywhere.
- Hook in the first 2 seconds; brand visible early but not first.
- One message per ad; one call to action.
- Readable on a phone: large text, high contrast, a few words at a time.
Questions
What is the best size for an Instagram Reels ad?
9:16 vertical at 1080×1920 pixels, with key text kept away from the top and bottom edges where Instagram shows buttons and captions.
How long should a TikTok ad be?
Short: most in-feed ads run roughly 9–34 seconds, with the hook in the first two seconds. Shorter ads are easier to watch to the end.
Can I use one video for every platform?
You can, but results are usually better with a version per shape — 9:16 for vertical placements, 4:5 or 1:1 for feeds, 16:9 for YouTube — so text stays readable.
Related
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