LinkedIn Video Format, Size & Specs: Complete 2026 Guide

LinkedIn video posts consistently outperform text and image posts — they generate three times more engagement on average, according to LinkedIn's own data. But LinkedIn has strict technical requirements, and uploading the wrong format or resolution can result in rejected uploads, poor quality after re-encoding, or a video that looks cropped on mobile.

This guide covers everything you need to know about LinkedIn video specifications and how to convert your footage to meet them before you upload.

LinkedIn Video Specifications (2026)

Native Video Posts (Feed)

| Spec | Requirement | |------|------------| | File formats | MP4 (recommended), MOV | | Max file size | 5 GB | | Min file size | 75 KB | | Duration | 3 seconds – 10 minutes | | Resolution | 256x144 minimum, 4096x2304 maximum | | Aspect ratios | 1:2.4 to 2.4:1 (horizontal, vertical, square all work) | | Frame rate | 10–60 fps | | Audio | AAC or MP3, stereo or mono | | Max audio channels | 2 | | Bit depth | 8-bit |

LinkedIn Stories (mobile only)

| Spec | Requirement | |------|------------| | Aspect ratio | 9:16 (vertical) | | Resolution | 1080x1920 recommended | | Duration | Up to 20 seconds per story | | Format | MP4 or MOV |

LinkedIn Video Ads

Video ads have slightly different requirements:

| Spec | Requirement | |------|------------| | File format | MP4 only | | File size | Under 200 MB | | Recommended aspect ratios | 16:9 (horizontal), 1:1 (square) | | Recommended resolution | 1920x1080 (16:9), 1080x1080 (1:1) | | Duration | 3 seconds – 30 minutes | | Codec | H.264 | | Audio | AAC, max 64 kHz |

Which Aspect Ratio Should You Use?

LinkedIn supports multiple aspect ratios, but they are not equally effective.

16:9 (Landscape) — Safest Choice for Desktop Viewers

The classic widescreen format works well for talking-head videos, product demos, and screen recordings. Most professional video content starts in 16:9. On desktop, this fills the feed nicely. On mobile, viewers tilt their phones or see letterbox bars.

Best for: Webinar clips, conference presentations, product walkthroughs

1:1 (Square) — Best for Mixed Audiences

Square videos take up 78% more space in the LinkedIn mobile feed than 16:9 videos, according to Sprout Social research. That extra visual real estate means more attention-grabbing power. Square also avoids the awkward letterboxing on mobile.

Best for: Short tips, testimonials, company announcements, thought leadership clips

9:16 (Vertical/Portrait) — Best for Mobile-First Content

Vertical video feels native on mobile and fills the entire screen. LinkedIn Stories use 9:16. As LinkedIn's mobile usage grows, vertical becomes increasingly viable for feed posts too.

Best for: LinkedIn Stories, casual behind-the-scenes content, short-form clips under 60 seconds

How to Convert Your Video for LinkedIn

If your footage was shot in a different format or aspect ratio, VideoConvert can prepare it for LinkedIn in a few clicks.

Converting Aspect Ratio

From 16:9 to 1:1 (for better mobile engagement):

Open VideoConvert and drag in your video

Select 1:1 aspect ratio

Choose Fill mode (crops sides to square) or Fit mode (adds black bars)

Select MP4 output

Set quality to Medium (CRF 23) for uploads

Click Convert

From any format to 9:16 vertical:

Select 9:16 aspect ratio

Choose Fill mode to crop and fill the vertical frame

Convert and upload to LinkedIn Stories

Converting File Format to MP4

LinkedIn accepts both MP4 and MOV, but MP4 is universally more reliable across LinkedIn's encoding pipeline. If you have MOV, AVI, MKV, WebM, or any other format, convert to MP4 before uploading.

Recommended Settings for LinkedIn Upload

| Setting | Value | |---------|-------| | Format | MP4 | | Codec | H.264 (VideoConvert default) | | Resolution | 1920x1080 (16:9), 1080x1080 (1:1), 1080x1920 (9:16) | | Quality | Medium (CRF 23) | | Audio | Included (VideoConvert preserves audio automatically) |

LinkedIn's Re-encoding: What Actually Happens

When you upload to LinkedIn, the platform re-encodes your video for adaptive streaming — similar to YouTube. This means your high-quality upload gets compressed again for delivery. The implications:

Do not obsess over perfect quality — LinkedIn will compress it regardless. Medium quality (CRF 23) is sufficient.

Resolution matters more than bitrate — Upload at 1080p minimum. LinkedIn preserves resolution better than it preserves fine detail.

Keep file sizes under 1 GB — Uploads over 1 GB work but take much longer and sometimes fail on slow connections. Most 10-minute 1080p videos compress well under 500 MB at CRF 23.

Captions and Accessibility

LinkedIn auto-generates captions for videos, but the accuracy is inconsistent. For professional content, add captions before uploading:

LinkedIn's video editor (in the upload flow) lets you upload an SRT file

Auto-generated captions can be edited in the LinkedIn interface

Burned-in captions in the video file itself are the most reliable option

Captioned LinkedIn videos see 70% higher view completion rates, according to LinkedIn's internal data.

LinkedIn Video Best Practices for Engagement

Beyond technical specs, these practices maximize the impact of LinkedIn video:

Hook in the first 3 seconds: LinkedIn videos autoplay silently in the feed. The first frame must be visually compelling enough to make someone stop scrolling. Avoid starting with a title card or logo — start with action or a strong visual.

Add text overlays for silent viewing: 85% of social media videos are watched without sound. Text on screen is not optional; it is essential for reaching your full audience.

Keep it under 2 minutes: LinkedIn's internal data shows view-through rates drop sharply after 2 minutes for organic posts. For ads, 15–30 seconds outperforms longer formats.

Use a custom thumbnail: Upload a custom thumbnail when posting. LinkedIn auto-selects the first frame, which is often black or an awkward mid-blink shot.

Optimize the caption: The text you write with the video is searchable. Include the key topic in the first line before the "...see more" cutoff (roughly 150 characters).

Troubleshooting LinkedIn Video Upload Errors

"File format not supported"

LinkedIn requires MP4 or MOV. If you have WebM, AVI, MKV, or any other format, convert to MP4 first using VideoConvert.

"File is too large"

LinkedIn's 5 GB limit is generous, but uploads may time out. Convert with Medium quality (CRF 23) and 1080p resolution to get most videos under 500 MB — well within limits and fast to upload.

"Video resolution too low"

Your source video must be at least 256x144. If you are working with very old footage or compressed web clips, export at the source resolution — VideoConvert will not upscale in a way that adds quality.

"Processing failed" after upload

This usually means LinkedIn's encoder hit a problem with the file. Try re-exporting at CRF 23 with the High quality preset, ensuring the video is standard H.264 MP4 with AAC audio.

Summary

LinkedIn video is one of the highest-ROI content formats on the platform, but technical issues kill engagement before your message lands. The short checklist:

Convert to MP4 if you are in any other format

Choose 1:1 square for best mobile feed performance

Export at 1080p minimum resolution

Use CRF 23 (Medium quality in VideoConvert) — no need for higher

Keep under 10 minutes for organic posts, under 30 seconds for ads

VideoConvert handles all the format and aspect ratio work so you can focus on the content itself.