CTV Video Ad Specs & Formats: Marketer’s Guide (2026)

Connected TV

Connected TV keeps evolving at lightning speed, and in 2026, the difference between a campaign that delivers strong ROAS and one that quietly underperforms often comes down to one thing: getting the details right from the start. That’s where CTV specs and formats matter most.

Whether you’re running Performance TV campaigns on MNTN, testing CTV platforms individually, or simply trying to avoid the dreaded “creative rejected” email, knowing the exact technical requirements for each platform is now table stakes.

This guide cuts through the noise with the latest, platform-by-platform breakdown of Connected TV dimensions, durations, file sizes, aspect ratios, and everything else you need to launch polished, platform-compliant video ads on the best streaming services.

MNTN Performance TV

MNTN Performance TV delivers the flexibility and control marketers need to maximize ROAS while reaching audiences on premium streaming TV. It brings the massive reach of television advertising together with the precision targeting, real-time optimization, and performance tools you already rely on from digital channels, making CTV a true third pillar of performance marketing.

Performance TV Ad Formats and Video Specs

• Aspect ratio: 16:9 (1920 x 1080)
• Max file size: 4GB
• Video length: Up to 30 seconds (optimized for 15- and 30-second slots)
• Frame rate: 23.98, 25, or 29.97 FPS (must remain constant and match the native frame rate of your source footage)
• File type: .mp4 or .mov

Creative Tips for Performance TV Advertising

Once the technical specs are locked in, the real performance lift comes from creative that’s built for the living-room screen. Follow these proven best practices:

• Use a strong, clear voiceover that cuts through ambient noise
• Hook viewers in the first three seconds
• Keep creative fresh with regular rotations
• Tell a compelling story that resonates with your audience
• Keep your CTA, logo, and URL visible throughout the entire ad

That final tip matters more than most realize. According to MNTN Research, ads that display their CTA, logo, and URL for the full duration see a 112.6% higher average conversion rate, 48% higher average video view rate, and 41% lower average cost per visit.

Important clarification for MNTN advertisers: This marketer’s guide shares industry-wide CTV video ad specs and formats to help you understand the full landscape. MNTN Performance TV, however, is purpose-built for pre-roll, mid-roll, post-roll, and pause advertising with its own streamlined creative requirements designed for our premium inventory and automated optimization. For MNTN-specific specs and best practices, head to your campaign builder or the MNTN Help Center.

Netflix

Netflix made a major shift when it launched its ad-supported tiers in late 2022, ending more than 15 years of being completely ad-free. That change opened up a premium new frontier for performance marketers looking to reach highly engaged audiences on one of the world’s largest streaming platforms.

Netflix Ad Formats & Video Specs

• Aspect ratio: 16:9
• Video length: 15 or 30 seconds
• Frame rate: 23.976, 24, 25, 29.97, or 30 FPS (constant frame rate)
• Bitrate: H.264 – greater than 8 Mbps (720p) and 12 Mbps (1080p); MOV/ProRes – greater than 42 Mbps (720p) and 80 Mbps (1080p)
• File type: .mov or .mp4

Creative Tips for Netflix Advertising

On Netflix, make your spot feel like a trailer, not a promo: open on a clean visual hook, build intrigue fast, and let the brand show up as part of the story instead of barging in with a hard sell. Viewers come to Netflix for premium shows, films, and live moments, so cinematic pacing and a confident reveal will land better than loud retail energy.

• Read our step-by-step guide on Netflix advertising

Hulu

Hulu continues to be a go-to destination for marketers thanks to its vast content library and instant access to major network shows. As one of the original platforms that helped launch the streaming revolution, it still delivers premium placement opportunities that drive real performance when your creative is dialed in.

Hulu Ad Formats & Video Specs

• Aspect ratio: 16:9 (required; 1920 x 1080 preferred, 1280 x 720 accepted)
• Max file size: 1.9 GB (programmatic/VAST); 250 MB for Hulu-served
• Video length: 5–90 seconds (standard inventory optimized for 15- and 30-second spots)
• Frame rate: 23.98, 24, 25, 29.97, or 30 fps (constant frame rate, progressive scan only)
• Bitrate: 10–40 Mbps
• File type: .mov or .mp4

Creative Tips for Hulu Advertising

Hulu creative should feel current and TV-native, with sharper copy and faster scene changes that can keep pace with a viewer moving between next-day shows, originals, and live programming. Treat it like the platform for timely, culturally aware storytelling — less polish for polish’s sake, more relevance, momentum, and a clear payoff.

• Read our step-by-step guide on Hulu advertising

Disney+

Disney+ delivers a premium mix of original series, blockbuster movies, and beloved family content that keeps viewers highly engaged across every screen. For performance marketers, it’s a high-quality CTV destination where loyal audiences are primed to discover and act on brands that feel like a natural part of the experience.

Disney+ Ad Formats & Video Specs

• Aspect ratio: 16:9 (1920 x 1080 preferred, 1280 x 720 accepted)
• Max file size: 250 MB (Disney-hosted); 1.9 GB (VAST/programmatic)
• Video length: 15, 20, 30, or 60 seconds
• Frame rate: 23.98, 24, 25, 29.97, or 30 FPS (constant frame rate, progressive scan only)
• Bitrate: 10–40 Mbps
• File type: .mov or .mp4

Creative Tips for Disney+ Advertising

Disney+ creative works best when it leads with wonder, warmth, and total clarity, because this is a platform built around beloved franchises, fan communities, and big emotional worlds. Keep the message optimistic and the visuals clean, because ad creative that feels too ironic, chaotic, or self-aware can clash with the viewing environment.

• Read our step-by-step guide on Disney+ advertising

Roku

Roku reaches a massive audience and sits at the center of countless modern living rooms, giving marketers a prime opportunity for personalized, high-impact ad placements that feel native to the big screen.

Roku Ad Formats & Video Specs

• Aspect ratio: 16:9 (1920 x 1080 recommended)
• Max file size: 1 GB
• Video length: 6–92 seconds (optimized for 15- and 30-second spots)
• Frame rate: 23.98, 25, or 29.97 FPS (must remain constant)
• Minimum bitrate: 6 Mbps
• File type: .mov or .mp4

Creative Tips for Roku Advertising

Roku is where clarity wins: get to the product fast, use oversized on-screen text, and make the offer readable from across the room without needing a second watch. Because Roku sits at the center of the streaming experience and supports interactive formats like Action Ads, creative that is simple, direct, and response-ready has the best chance to work hard.

• Read our step-by-step guide on Roku advertising

Peacock

Peacock stands out with its powerful mix of live sports coverage and a blend of nostalgic favorites alongside fresh NBCUniversal content. This combination draws a broad, highly engaged audience, making it a smart addition to any performance-focused CTV strategy.

Peacock Ad Formats & Video Specs

• Aspect ratio: 16:9 (1920 x 1080 preferred)
• Max file size: 10 GB (mezzanine file)
• Video length: 6, 15, 30, 45, or 60 seconds (90 seconds available upon request)
• Frame rate: 23.98, 25, or 29.97 FPS (must match native frame rate and remain constant)
• Bitrate: Greater than 10 Mbps (15–30 Mbps recommended for mezzanine)
• File type: .mov or .mp4

Creative Tips for Peacock Advertising

On Peacock, play into event energy — bold openings, personality-driven scripts, and creative that can ride the same pulse as sports, reality, and buzzy live moments. This is a great home for ads that feel social, snackable, and just a little dramatic, as long as the payoff lands fast.

• Read our step-by-step guide on Peacock advertising

Paramount+

Paramount+ combines live sports, fresh original series, and a deep library of CBS and network favorites, creating a diverse and highly engaged audience that rewards smart, well-targeted CTV campaigns.

Paramount+ Ad Formats & Video Specs

• Aspect ratio: 16:9 (1280×720) minimum
• Max file size: 10 GB
• Video length: 15 or 30 seconds
• Frame rate: 23.98 (23.976), 24, 25, 29.97, or 30 fps
• Bitrate: 6 Mbps minimum
• File type: .mp4 preferred (.mov accepted)

Creative Tips for Paramount+ Advertising

Paramount+ is a fandom platform, so creative should lean into scale, stakes, and a point of view that feels worthy of passionate viewers — think iconic lines, bigger music, and sharper taglines. Whether the context is sci-fi, competition, drama, or live sports, the ads that resonate here tend to feel more like mini events than polite interruptions.

HBO Max

HBO Max delivers premium original series, blockbuster movies, and high-end content that attracts deeply engaged viewers who expect cinematic quality. For performance marketers, it’s a standout CTV channel where sophisticated audiences respond strongly to brands that match the platform’s elevated tone and storytelling standards.

HBO Max Ad Formats & Video Specs

• Aspect ratio: 16:9 (1920 x 1080 preferred)
• Max file size: 1 GB
• Video length: 15, 30, or 60 seconds
• Frame rate: 25
• Bitrate: 10 Mbps or higher
• File type: .mp4

Creative Tips for HBO Max Advertising

Resist the urge to oversell here. Polished cinematography, smart dialogue, and a little restraint will usually outperform an ad that explains every single thing. Warner Bros. Discovery’s streaming ecosystem is built around influential stories, franchises, and fans, so the creative should feel premium, deliberate, and confident enough to leave a little air in the room.

Amazon Prime Video

Amazon Prime Video delivers massive global reach through its growing ad-supported tier and premium original and licensed content, making it an ideal channel for brands that want to connect with engaged viewers both domestically and internationally.

Amazon Ad Formats & Video Specs

• Aspect ratio: 16:9 (1920×1080)
• Max file size: 500 MB
• Video length: 15, 30, 45, or 60 seconds
• Frame rate: 23.976 (recommended), 24, 25, or 29.97 FPS
• Bitrate: Minimum 15 Mbps (50 Mbps recommended for Prime Video campaigns)
• File type: H.264, MPEG-2, or MPEG-4; Audio: AAC

Creative Tips for Prime Video Advertising

Prime Video viewers are in discovery mode—browsing shows, movies, and live events—so your ad should feel like a natural extension of the experience. Use data-driven insights to tailor your message to specific audience segments and lead with a crystal-clear value proposition that instantly shows why your brand is the right choice.

• Read our step-by-step guide on Prime Video advertising

YouTube TV

YouTube TV delivers free movies, popular series, and live programming to millions of viewers, complete with ad placements that give marketers strong control over where their creative appears, so every impression works harder. 

YouTube Ad Formats & Video Specs

• Aspect ratio: 16:9 (recommended for best CTV quality; 4:3 supported but not optimal for TV screens)
• Video length: Non-skippable ads are standardized at 6 seconds (bumpers), 15 seconds, or 20 seconds. On YouTube TV and YouTube Select (CTV), 30-second non-skippable ads are also supported but must match the exact duration (or within 0.1s) to serve. Skippable ads require a minimum of 12 seconds (skippable after 5 seconds); they have no hard maximum length, but 15–60 seconds is the recommended range for performance across all devices.
• Frame rate: 23.98, 24, 25, 29.97, 30, or 60 FPS (must remain constant)
• File type: .mp4, .mov, .mpeg, .avi, or .asf
• Max file size: Up to 256 GB (no practical limit for most campaigns)

Creative Tips for YouTube TV Advertising

YouTube TV viewers are settled in for longer viewing sessions, so your ad needs to feel like it belongs alongside premium content. Lead with a clear value proposition in the opening seconds, and consider using on-screen talent for natural brand mentions that boost memorability and completion rates. Keep spots concise (even skippable ones) to encourage full views and stronger performance.

Why You Need Performance TV

Want to make sure your OTT ads meet every spec and drive real performance? MNTN’s platform ensures your video ads are optimized for top streaming networks while leveraging AI-powered targeting and real-time optimization. With premium inventory and scalable creative solutions, your campaigns are built to engage and convert.

Here’s what you get with MNTN Performance TV:

• Premium CTV Inventory – Secure guaranteed placements on leading streaming networks, ensuring high-quality ad delivery.
• Creative-as-a-Subscription™ – Get a steady stream of high-performing CTV creative, designed to meet platform specs and drive results.
• MNTN Matched – AI-powered targeting ensures your streaming ads reach the most relevant, high-intent audiences.
• Automated Optimization – AI continuously fine-tunes your campaign, maximizing efficiency and eliminating wasted spend.
• Reporting Suite – Get real-time insights into engagement, conversions, and performance to refine your strategy with confidence.

Run CTV ads that check every box—sign up today to get started with MNTN’s self-serve software.

Connected TV Video Ad Specs: Final Thoughts

Getting to know each of the CTV ad formats and specs listed above will help you make the most of the CTV revolution as a whole, but if you want to make every ad dollar count, you’ll need the tools in place to measure your campaign’s success. 

A performance marketing platform like MNTN gives you actionable insights to get more bang for your advertising buck. Advertise smarter, reach more consumers, and sprint toward your growth goals with targeted CTV ads.