LinkedIn Video Ad Size Guide: Specs for Every Placement

If you are prepping a video for LinkedIn Campaign Manager, the fastest way to get rejected or wasted spend is uploading the wrong aspect ratio or a file that gets cropped in ways you didn't intend. This linkedin video ad size guide walks through the formats, ratios, and safe-zone rules that actually affect how your ad looks and performs, so you can build or resize a video correctly before you ever hit upload.

Why LinkedIn Video Sizing Is Different From Other Platforms

LinkedIn is a professional feed, but the video surface behaves a lot like any other social feed: people scroll on a phone, sound is usually off by default, and the video competes with text posts, comments, and other ads for a few seconds of attention. The difference is mostly about context, not pixels. A video that looks native on LinkedIn tends to be simpler, more text-forward, and more clearly tied to a business outcome than a typical consumer-feed ad. But the technical sizing rules — aspect ratio, resolution, safe zones — follow the same logic you'd apply on any mobile-first feed.

That means if you already understand vertical and square video for other channels, you are most of the way there. The main adjustments for LinkedIn are: expect more desktop viewing than on consumer apps, expect the player to sometimes show the video smaller inside a feed card, and design captions and text so they're legible at that smaller size too.

LinkedIn Video Ad Specs at a Glance

Exact file-size caps and maximum durations are the kind of detail LinkedIn adjusts from time to time, so always confirm the current numbers inside Campaign Manager before you export your final file. What doesn't change often is the aspect ratio logic below — use this as your working reference.

If you only have budget or time to produce one file, 1:1 (square) is the safest universal choice: it holds up reasonably on both mobile and desktop feeds and rarely gets awkward letterboxing. If you can produce two, add a 9:16 vertical cut for mobile feed placements, where it usually fills more of the screen than a square clip.

Choosing the Right Aspect Ratio for Each Placement

Vertical (9:16)

Vertical video fills the most screen real estate on a phone, which is where a large share of LinkedIn feed scrolling happens. Use it when your creative is built around people talking to camera, product demos, or text-on-screen storytelling, since the full-height frame gives captions and headlines more room to breathe.

Square (1:1)

Square is the pragmatic middle ground. It looks reasonable on both mobile and desktop, doesn't leave large empty bars on either, and is a sensible default if you're testing a new campaign and don't yet know which placements will perform best.

Horizontal (16:9)

Horizontal still has a place on LinkedIn, particularly for desktop-heavy audiences (think B2B software buyers researching at a workstation) or for repurposing a webinar clip, product walkthrough, or recorded demo that was never meant to be vertical. Don't force a horizontal recording into a vertical crop just to chase a trend — if the content genuinely works better wide, run it as 16:9 and target desktop-leaning segments.

4:5

4:5 is a useful in-between for feed cards that show a slightly taller frame than square without going fully vertical. It's a strong second option if your main asset is 9:16 and you want a close relative for placements that crop differently.

File Format, Length, and Resolution Rules

• Export as MP4 with a standard codec; this is the most broadly compatible choice across ad platforms, not just LinkedIn.
• Keep resolution sharp but reasonable: 1080px on the long edge (1080×1920 for vertical, 1080×1080 for square, 1920×1080 for horizontal) is a solid, widely supported starting point.
• Frame rate of 24–30 fps is standard for ad video; there's rarely a reason to go higher for feed content.
• Keep duration tight. LinkedIn allows a wide range, but for cold-audience feed ads, a shorter cut (roughly 15–30 seconds) is a reasonable starting point to test against a longer version, since attention in a professional feed is still limited.
• Double-check file size against Campaign Manager's current upload limit before export — compress rather than resize if the file is too large, so you don't accidentally change the aspect ratio.

If you're also running the same campaign on other platforms, it helps to understand codec and container differences before you export once and upload everywhere. Our guide to video ad codec requirements by platform covers this in more detail if you're juggling multiple ad accounts.

Designing for Muted Autoplay and Small Players

Feed video on LinkedIn typically autoplays without sound, and the player can be smaller than a full-screen app experience, especially on desktop. Two design habits matter more here than on apps built around full-screen vertical video:

1. Put your core message in on-screen text, not just in a voiceover. Assume the first watch will be silent.
2. Keep text large enough to read in a compact player. A headline that looks fine full-screen can be unreadable shrunk into a feed card — test it at actual size, not just on your editing timeline.

If you want a deeper breakdown of how to design the whole ad — not just captions — for a muted first impression, see visual cues for muted video ads. The same principles apply whether the feed is LinkedIn, Instagram, or TikTok: assume no sound until proven otherwise, and build the story so it still lands.

Common Sizing Mistakes That Hurt LinkedIn Video Ads

• Uploading one horizontal file and letting LinkedIn auto-crop it for every placement — this often cuts off faces, logos, or text that was framed for a wide shot.
• Centering important text in the middle of a 9:16 frame without accounting for how the player crops edges differently across devices; keep key text and logos away from the outer 10% of the frame on all sides.
• Treating LinkedIn like a purely desktop channel and skipping a vertical cut entirely, missing a large share of mobile feed scrolling.
• Exporting at a low resolution to save file size, which looks soft on modern phone screens — compress the bitrate instead of shrinking the resolution.
• Reusing a 15-second consumer-app ad without adjusting pacing for a slightly slower-scrolling, more text-literate professional audience.

A Simple Pre-Upload Checklist

• Aspect ratio matches the placement you're targeting (vertical for mobile feed, square as a safe default, horizontal only if the content genuinely works wide).
• Resolution is sharp at 1080px on the long edge or higher.
• File is exported as MP4 and checked against Campaign Manager's current size limit.
• Captions are burned in or added as a caption file, and the message reads clearly with sound off.
• Key text and logo sit inside the safe zone, away from edges that might crop differently across devices.
• Duration is trimmed to the shortest length that still tells the story — test longer only if the shorter version plateaus.

How FrameNotion Fits In

Once you know the ratios and rules above, the next bottleneck is usually production time: re-cutting the same ad into vertical, square, and horizontal versions, adding captions, and making sure it still works on mute. FrameNotion is built around that problem. Paste a product or landing page link, and FrameNotion AI writes and renders a 30-second ad from scratch — hook, problem, benefit, proof, offer, call to action — complete with AI voiceover, music cut to the beat, sound effects, and word-by-word captions, or silent if you prefer. Every ad also comes out in 4:5, 1:1, and 16:9 alongside the original 9:16, which covers most of the LinkedIn placements in this guide without a separate edit.

If you're starting from an event flyer or sale poster rather than a product page, FrameNotion can also turn that into a motion poster: it animates the original title, artwork, and badges to music and ends on the poster itself, without retyping or adding new content. And if you need the on-screen copy in a different language for a regional LinkedIn audience, FrameNotion AI can write it in any of 18 languages. You can see finished examples on the examples page, check how the process works on features, or compare plans on pricing — plans start at a monthly rate with a limited number of ads per month, or as one-off packs if you only need a handful.

A finished ad typically takes about 10 to 20 minutes, and once it's rendered you can request text and color changes without starting a new ad from scratch — useful if your first LinkedIn test needs a tighter hook or a different offer line before you commit more budget.

Where to Go From Here

Sizing is only half the job — the other half is making sure the ad earns attention once it's correctly framed. If you're still deciding what to actually put inside the frame, our video ad idea generator for ecommerce brands is a useful next stop, and if you're running the same creative across Meta placements too, Facebook video ad specs and aspect ratio covers the equivalent rules for that platform.