Video Ad Specs for LinkedIn Feed Ads: The Complete Guide

If you're prepping creative for a campaign, the fastest way to avoid a rejected upload or a blurry, cropped video is to nail the video ad specs for LinkedIn feed ads before you render anything. LinkedIn's feed is a mixed-orientation environment — square, vertical and landscape posts all sit side by side — so the right spec depends on where exactly your ad is running and how people are likely to view it.

LinkedIn Feed Video Ad Specs at a Glance

LinkedIn's feed can show Single Image, Document, Carousel and Video ad formats, and video is read differently depending on whether someone is scrolling on a phone or a laptop. The table below covers what stays stable across most feed placements. Treat the exact file-size ceiling and maximum duration as moving targets — always confirm the current numbers on LinkedIn's live specification page, since those caps get revised more often than orientation and resolution do.

Aspect Ratio: Picking the Right Shape for the Feed

This is where most teams get tripped up. LinkedIn's feed renders differently depending on device and surface, which means a single orientation rarely performs the same everywhere.

Square (1:1)

Square video is the most consistent performer across the LinkedIn feed because it occupies a similar amount of vertical space on both mobile and desktop. If you only have the budget to produce one version, square is usually the safer default for feed placements specifically.

Vertical (4:5 or 9:16)

Vertical video takes up more screen real estate on a phone, which is useful since a large share of feed scrolling happens on mobile. The tradeoff is that full 9:16 can get cropped or boxed in on wider desktop layouts. 4:5 is a reasonable middle ground: tall enough to dominate a mobile screen, not so tall that desktop viewers lose the edges. If your ad was originally cut for Stories or short-form vertical feeds, our vertical video ad specs for mobile guide covers how to adapt that footage without starting over.

Landscape (16:9)

Landscape still has a place for thought-leadership style content or anything originally produced for YouTube or a webinar recap, but it occupies the least vertical space in a mobile feed, so it's rarely the strongest choice for a cold-scroll ad.

If you're running the same campaign across LinkedIn's other surfaces — right rail, Stories, Message ads — the placement-by-placement breakdown in the LinkedIn video ad size guide is worth bookmarking alongside this one, since feed specs and other placements don't always match.

File Format, Export Settings and Technical Limits

Once orientation is decided, the technical export settings matter just as much. A correctly shaped video that's exported wrong can still look soft, stutter on playback, or get flagged on upload.

• Export as MP4 with H.264 compression and AAC audio — this is the most widely accepted combination for LinkedIn's ad tools
• Keep frame rate consistent through the whole file (24, 25 or 30 fps); mixing frame rates mid-edit is a common cause of judder
• Use progressive scan, not interlaced
• Avoid unusually long color bars or black frames at the start or end — they waste autoplay seconds and can look like a rendering error
• Compress before upload if your file is large, but check the result for visible artifacting on text and logos

If you want a general checklist for getting export settings right regardless of platform, safe export settings for vertical video ads walks through bitrate, codec and container choices that hold up across most ad platforms, LinkedIn included.

Designing for Sound-Off Autoplay

Feed video on LinkedIn typically autoplays without sound, so your ad needs to work as a silent experience first and a sound-on experience second. Design the opening frames so the core message — what the product or offer is — comes across from visuals and on-screen text alone, before anyone taps to unmute.

• Open with a visual that states the subject in plain terms, not an abstract mood shot
• Put your strongest claim or hook as text on screen within the first few seconds
• Use captions throughout rather than relying on a single opening title card
• Keep text legible at a glance — LinkedIn's feed is often viewed at small sizes, especially on mobile, so oversized decorative fonts can backfire

For caption placement specifically, subtitle placement tips for vertical video ads and font size guidelines for muted video ads both cover where text tends to get cropped or covered by platform UI, and how big it needs to be to read comfortably without sound. The same logic applies directly to LinkedIn's feed, where captions are doing most of the communicating.

Design Checklist for LinkedIn Feed Video Ads

Run through this before you export a final file:

1. Confirm the orientation matches the placement you're buying (feed vs. Stories vs. right rail can differ)
2. Leave margin at the top and bottom of the frame — LinkedIn overlays a sponsor label near the top and reaction/comment counts near the bottom
3. Burn in captions or attach a caption file; don't rely on viewers unmuting
4. Keep the brand name or logo visible early, not only in a closing card, since some viewers won't watch to the end
5. Test your file at actual feed size on a phone screen, not just full-screen on a monitor
6. Double-check current file-size and duration limits on LinkedIn's spec page right before upload

Common Mistakes With LinkedIn Feed Video Specs

A few patterns show up repeatedly in feed ad reviews:

• Reusing a widescreen webinar recording as-is, which shows up tiny in a mobile feed
• Centering important text or a CTA button graphic in the exact area the sponsor label or engagement icons will sit over
• Skipping captions because the original video had a voiceover that seemed clear enough
• Exporting at a low resolution and then letting LinkedIn's compression make it blurrier still
• Treating LinkedIn feed specs as identical to Stories or right-rail specs, when each placement actually expects a different shape

How FrameNotion Fits Into a LinkedIn Feed Workflow

FrameNotion is built around 9:16 vertical output for short-form platforms, so it isn't a direct substitute for native LinkedIn feed production — but it's genuinely useful for the adjacent problem most teams actually have: turning one product link into usable footage fast, then reshaping it. Paste a product or landing page into FrameNotion and FrameNotion AI writes and renders a 30-second vertical ad with a hook, problem, benefit, proof and call to action, complete with captions and a voiceover, in about 10 to 20 minutes. Every finished ad also comes bundled as 4:5, 1:1 and 16:9, which covers the square and 4:5 shapes recommended for LinkedIn's feed without a separate edit.

That makes it a solid starting point for a B2B or e-commerce brand that wants a consistent creative base across platforms: generate the ad once, pull the 1:1 or 4:5 version for LinkedIn's feed, and keep the 9:16 for TikTok, Reels or Shorts. FrameNotion doesn't publish directly to LinkedIn or report on ad performance — you'll still upload through LinkedIn's own ad manager and track results there — but it removes the step of briefing an editor just to get a usable square or vertical cutdown. You can see sample output on the examples page or check how the process works on features.

If you're also running the same campaign on TikTok or Shorts, the length logic is worth comparing side by side — our guide on recommended video ad length for TikTok ads breaks down runtime by goal, which is a useful contrast to how much shorter LinkedIn feed attention spans tend to run before people keep scrolling.

Final Checks Before You Upload

Before a feed video goes live, open the exported file on an actual phone and watch it muted at real feed size. That single step catches most of the problems this guide covers: text that's too small, a logo that's cropped, a CTA hidden behind the reaction bar, or a message that only lands once sound is on. Fix what you see there, confirm the file meets LinkedIn's current size and duration limits, and you're ready to launch.

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