CTV Video Ad Specs Guide: Sizes, Length, and Setup

This CTV video ad specs guide covers the sizes, lengths, and file formats connected TV platforms expect, plus how to adapt a creative built for mute-first social feeds into one that works on a living room screen with sound. If you only need the short version: most CTV placements want horizontal 16:9 video at 1920x1080, delivered as MP4 or MOV, in a 15 or 30 second length, with a soundtrack strong enough to carry the message on its own, since there's no mute button built into the viewing experience the way there is on a phone.

Why a CTV Video Ad Specs Guide Matters Before You Export

Connected TV inventory behaves differently from feed-based social placements in almost every way that matters creatively. The screen is large and viewed from a distance, the ad usually can't be skipped or tapped, and sound is on by default because the household, not an individual thumb, controls the remote. Export a vertical 9:16 TikTok cut with black bars on either side, or drop in text sized for a six-inch phone screen, and the ad will look amateur on a 55-inch television even if the message is strong.

Getting the specs right upfront also avoids the slower, costlier problem of an ad getting bounced back by a publisher's ad server for the wrong wrapper, frame rate, or aspect ratio after you thought the campaign was ready to go live.

Core CTV Video Ad Specs Checklist

CTV Ad Specs by Platform

Every connected TV publisher runs its own ad server with its own upload portal, and limits can change, so always check the current specs page before a final render. The pattern across major platforms, though, is consistent enough to plan around.

Skippable vs Non-Skippable CTV Slots

Not every CTV ad slot behaves the same way. Some inventory is skippable after a few seconds, similar to in-stream video on other platforms. A lot of CTV inventory, particularly inside ad-supported streaming apps, is non-skippable for the full 15 or 30 seconds. Treat skippability as a creative brief: on skippable slots, earn attention in the first few seconds the way you would for a scroll-stopping social hook. On non-skippable slots, you have guaranteed watch time, so it's worth testing a slightly slower build that lets the product and benefit land before the offer.

Designing a Creative for the Living Room Screen

• Design for viewing distance. Text that reads fine on a phone held at arm's length can be illegible from a couch ten feet from the television. Use larger type and fewer words per frame.
• Keep logos, titles, and key visuals inside a safe inner zone of the frame, roughly the center 90 percent, so nothing gets clipped on different TV displays.
• Write for sound-on. Since CTV ads play with audio by default, put the core message in the voiceover and music, not only in on-screen text.
• Avoid small lower-third captions sized for mobile scroll. If you use captions on CTV at all, make them large, high-contrast, and brief.
• Give viewers a concrete action even without a clickable link: a QR code held on screen long enough to scan, a spoken brand name and offer, or a promo code shown clearly for several seconds.
• Front-load the brand and the core benefit in the first few seconds. Non-skippable doesn't mean the viewer is paying attention — design the opening to earn it anyway.

Common CTV Spec Mistakes to Avoid

• Exporting the vertical 9:16 social cut with black bars added left and right instead of re-framing to true 16:9.
• Leaving the voiceover as an afterthought because the team is used to designing for muted autoplay feeds.
• Reusing mobile-sized caption text that becomes unreadable at TV scale.
• Shipping a file with no spoken or visual call to action, assuming the viewer can simply click through like on a web or app placement.
• Skipping a test upload and finding out about a frame rate or wrapper mismatch only after the campaign was supposed to launch.

Turning a Social Ad Into a CTV Ad

Most teams don't build a CTV ad from a blank page. The faster, more reliable path is to take a social ad that already works — one with a clear hook, problem, benefit, proof, and offer — and re-cut it for the living room. That usually means three things: switching the frame from vertical to horizontal so nothing is cropped or boxed in black bars, rebalancing the mix so the voiceover and music carry more of the story since the audience isn't scrolling on mute, and simplifying or removing on-screen captions that were designed for a phone screen read up close.

If your existing library of ads was built for feeds, our guide to vertical video ad specs for mobile is a useful companion piece — it covers the opposite end of the same problem, so you can see exactly what changes when you move from a phone screen to a television.

Where FrameNotion Fits Into a CTV Workflow

FrameNotion doesn't publish directly to CTV ad servers and doesn't report back on how an ad performed once it's live, so it isn't a replacement for a media buying or ad-ops platform. What it's built for is producing the creative itself, quickly. Paste a product or website link and FrameNotion AI writes and renders a 30-second ad from scratch — hook, problem, benefit, proof, offer, call to action — complete with an AI voiceover, music cut to the beat, and word-by-word captions, or music-only or silent if that fits the placement better. Every ad also comes out as 4:5, 1:1, and 16:9, so the same creative concept that started life as a 9:16 social cut already has a 16:9 version ready to use as the starting point for a CTV re-edit, rather than a reshoot from zero.

A finished ad takes about 10 to 20 minutes, and text and colors can be adjusted afterward without starting a new ad. You can see finished examples at examples, read how the process works on features, or compare plans on pricing — plans start at Starter for smaller volumes up to Agency for teams producing a high number of ads per month.

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