--- url: "https://vydioflow.com/blog/short-form-ad-specs-2026" title: "2026 Ad Specs for TikTok, Reels, Shorts and Meta" description: "Short-form ad specs for TikTok, Reels, Shorts and Meta: aspect ratios, resolution, durations, vertical safe zones, captions and export file guidance." outline: - "Aspect ratios — Use 9:16 as the default master aspect ratio for paid short-form video and compose vertically from the start." - "Resolution and file guidance — Start with a 1080×1920 vertical master and check file requirements for each intended ad placement." - "Duration — Review duration guidance for TikTok, Instagram Reels, YouTube Shorts and Meta feed placements." - "Safe zones and captions — Keep text out of the bottom 20% and top 10% of the vertical frame, and burn in captions for muted first exposures." - "Placement notes — Account for placement-specific differences when preparing ads for TikTok, Reels, Shorts and Meta feeds." - "Exporting once, publishing everywhere — Build a vertical master for reuse across placements rather than cropping a 16:9 master." --- # Short-form ad specs for TikTok, Reels, Shorts and Meta Current aspect ratios, durations, safe zones, caption practices and file guidance for paid short-form video across TikTok, Instagram Reels, YouTube Shorts and Meta feed placements. - Source: https://vydioflow.com/blog/short-form-ad-specs-2026 - Publisher: VydioFlow (https://vydioflow.com) - Author: VydioFlow Team - Category: Reference - Published: 2026-05-27 · Updated: 2026-08-20 · 8 min read - Topics: TikTok ad specs, Instagram Reels ad specs, YouTube Shorts ad specs, Meta video ad specs, vertical video safe zones, short-form video ad size ## Key takeaways - 9:16 at 1080×1920 is the default master for paid short-form. - Keep text out of the bottom 20% and top 10% of a vertical frame. - Burn in captions — most first exposures are muted. - Compose vertically from the start rather than cropping a 16:9 master. Getting specs wrong costs you reach before the creative is ever judged. Text lands under a UI overlay, the frame gets letterboxed, or the placement is skipped entirely. This is the short version we keep on hand — verify against each platform's current ad help centre before a large launch, since limits change. ## Aspect ratios - 9:16 — TikTok, Reels, Shorts, Stories. The default for paid short-form. - 1:1 — Feed placements where vertical gets cropped. - 4:5 — Meta feed's tallest supported ratio; more screen than 1:1 without vertical cropping. - 16:9 — YouTube in-stream and landing page embeds. ## Resolution and file guidance - Master at 1080×1920 for 9:16; 1080×1080 for 1:1; 1080×1350 for 4:5. - H.264 MP4 with AAC audio is accepted everywhere. - Target 30fps unless the creative genuinely needs 60. - Keep files comfortably under platform upload caps; heavy re-compression softens detail. ## Duration For direct response, 15–30 seconds is the working range. Under 10 seconds rarely leaves room for a call to action; over 45 seconds needs genuinely strong storytelling to hold. Build in scenes so you can trim without re-rendering everything. Platform maximums are far longer than what performs. Treat the maximum as a boundary, not a target. ## Safe zones and captions - Keep text out of the bottom 20% and top 10% of a 9:16 frame — UI overlays sit there. - Burn in captions. Most viewers watch muted on first exposure. - Keep on-screen text under seven words per card. - Put the brand or product in frame within the first three seconds. - Check the right edge of vertical frames too; action buttons stack there on TikTok. ## Placement notes - TikTok — native, unpolished framing outperforms studio-perfect composition. - Instagram Reels — audio matters more; a strong first line carries the ad. - YouTube Shorts — viewers tolerate slightly longer setups; the loop rewards clean endings. - Meta feed — 4:5 or 1:1 with captions; assume muted autoplay in a scrolling feed. ## Exporting once, publishing everywhere Render the master concept, then export each ratio rather than reshooting the idea per platform. Recomposition is a formatting job, not a creative one — but compose the 9:16 master first, because upscaling a horizontal crop into vertical always looks like a crop. ## FAQ ### What aspect ratio should I use for TikTok and Reels ads? 9:16 at 1080×1920. It is the native full-screen ratio for TikTok, Instagram Reels, YouTube Shorts and Stories, and it is the ratio you should compose first rather than crop into. ### How long should a short-form video ad be? 15 to 30 seconds for direct response. Shorter than 10 seconds rarely leaves room for a call to action; longer than 45 seconds requires strong storytelling to hold attention. ### Where are the safe zones in a vertical video ad? Keep essential text and product visuals out of the bottom 20% and top 10% of the frame, and away from the right edge where action buttons stack, since platform UI overlays those areas. ### Do I need captions on video ads? Yes. Most first exposures happen with sound off, so burn in captions, keep on-screen text under about seven words per card, and make sure the core promise reads without audio. ## Related pages - [Short-form ad specs article](https://vydioflow.com/blog/short-form-ad-specs-2026) — Read the standard web version of this Markdown reference. - [How to make Instagram Reels with AI](https://vydioflow.com/blog/how-to-make-instagram-reels-with-ai) — Apply vertical video guidance to an Instagram Reels workflow. - [AI video ads guide](https://vydioflow.com/blog/ai-video-ads-guide) — Connect technical ad specifications with the broader video ad creation process. - [How VydioFlow works](https://vydioflow.com/how-it-works) — Learn how prompts, product URLs and uploaded assets become short-form video ads. Summary: Short-form ad specs for TikTok, Reels, Shorts and Meta: aspect ratios, resolution, durations, vertical safe zones, captions and export file guidance.