Ijharul Islam
LinkedIn video specs, as of October 2026: a video post can be up to 15 minutes and 5 GB, between 256×144 and 4096×2304 pixels, with an aspect ratio from 1:2.4 to 2.4:1 and a frame rate of 10 to 60 fps. Video ads have their own rules: 3 seconds to 30 minutes, 75 KB to 500 MB, MP4 only.
Here are both sets of numbers from LinkedIn Help, the sizes we'd actually export, and a practical note on what holds attention in a professional feed.
The short answer
As of October 2026, LinkedIn video posts can be up to 15 minutes and 5 GB, 256×144 to 4096×2304 pixels, ratio 1:2.4 to 2.4:1, at 10-60 fps. LinkedIn video ads run 3 seconds to 30 minutes, 75 KB to 500 MB, as MP4 (H.264), with 4:5 at 720×900 or 1:1 recommended for the feed.
Key takeaways
- For posts, export 1080×1350 (4:5) or 1080×1080 (1:1). Both take up more of the feed than 16:9.
- Posts: up to 15 minutes, 5 GB, 10-60 fps, and many formats including MP4, MOV and WebM.
- Ads: 3 seconds to 30 minutes, 75 KB to 500 MB, MP4 with H.264 or VP8, captions as an SRT file.
- LinkedIn suggests 15-30 second ads to qualify for every feed placement.
Disclosure: we make QuickVeed and show how to do this in it, along with other ways. Details about other products come from their public pages, checked in October 2026 and linked at the end.
LinkedIn video specs for posts (October 2026)
LinkedIn's help article on video sharing troubleshooting lists the limits for videos you post from a profile or page:
| Spec | LinkedIn video post |
|---|---|
| File formats | MP4, MOV, AVI, WebM, MKV, WMV, VC1, MPEG, MPEG2, MPEG1VIDEO, DVVIDEO, QTRLE, TSCC2 |
| Maximum file size | 5 GB |
| Resolution range | 256×144 to 4096×2304 |
| Aspect ratio | 1:2.4 to 2.4:1 |
| Maximum length | 15 minutes |
| Frame rate | 10 to 60 fps |
That range is wide enough for 16:9, square, 4:5 and 9:16 vertical videos. The question isn't what LinkedIn accepts but what works in the feed, where people scroll on phones.
| Shape | Export size | When to use it |
|---|---|---|
| 4:5 vertical | 1080×1350 | Most feed posts; takes the most space on a phone without being cropped |
| 1:1 square | 1080×1080 | Talking-head clips, quotes, slides |
| 16:9 landscape | 1920×1080 | Webinar recordings and demos watched on desktop |
| 9:16 vertical | 1080×1920 | Reusing a Short or Reel; check how it previews in the feed before posting |
LinkedIn video ad specs
LinkedIn's video ads specification page sets stricter rules than organic posts:
| Spec | LinkedIn video ad |
|---|---|
| Length | 3 seconds to 30 minutes; 15-30 seconds recommended; in-stream ads up to 90 seconds |
| File size | 75 KB to 500 MB |
| Format and codec | MP4; H.264 or VP8 |
| Frame rate | Below 30 fps, per LinkedIn's spec page |
| Audio | AAC or MPEG4 |
| Captions | SRT file, text only; custom formatting such as font colours isn't supported |
| 16:9 horizontal | 1920×1080 or 1200×675 recommended; 640×360 to 1920×1080 |
| 1:1 square | 360×360 to 1920×1920 |
| 4:5 vertical (recommended) | 720×900 recommended; 360×450 to 1080×1350 |
| 9:16 vertical | 720×1280 recommended; 360×640 to 1080×1920 |
LinkedIn recommends ads of 15 to 30 seconds so they qualify for all feed and Audience Network placements. It also lists 4:5 as the recommended vertical ratio.
One detail people miss: because ad captions must be a plain SRT file, you need a clean, correctly timed transcript. Our guide on how to make an SRT file covers the format, and the free text to SRT converter turns a script into one.
What works for video on LinkedIn
LinkedIn viewers are at work, often in an open office or on a train, so many watch without sound. A few habits make a big difference:
- Captions on every video. Burn them in for posts. For ads, upload an SRT file as LinkedIn requires.
- Say the point in the first sentence. "Here's how we cut onboarding time in half" beats an intro slide.
- Keep most posts under two minutes. Fifteen minutes is the limit, but a 60-90 second clip of the best part of a webinar usually travels further than the full recording. See how to repurpose a webinar into social clips.
- Show a person. A founder or expert speaking to camera tends to feel more native than a polished ad.
- Write the post text too. The first lines of the post appear above the video; use them to say why it's worth watching.
These are practical habits, not LinkedIn rules, so test them against your own analytics.
How long should a LinkedIn video be?
LinkedIn allows 15 minutes for posts and recommends 15-30 seconds for ads. In between, match length to the job:
| Video | Typical length |
|---|---|
| Video ad | 15-30 seconds (LinkedIn's recommendation) |
| Founder or expert tip | 30-90 seconds |
| Webinar highlight | 45-120 seconds |
| Product demo | 1-3 minutes |
| Full talk or panel | Up to 15 minutes, or link to it instead |
If a clip needs more than three minutes, ask whether it's really two clips.
Export checklist for LinkedIn
- MP4, H.264 video, AAC audio: accepted for both posts and ads.
- 1080×1350 (4:5) or 1080×1080 (1:1) for the feed; 1920×1080 for long demos.
- For ads, stay under 500 MB and below 30 fps. A 30-second 1080p ad at 8 Mbps is about 30 MB, far under the limit; the video bitrate calculator shows the size for any length.
- For ads, prepare an SRT caption file. For posts, burn captions in.
- Check the first frame. It's what people see before the video starts.
Our social media video size guide lists LinkedIn next to YouTube, TikTok, Instagram and the rest, with links to each source.
Before uploading, play the export once on a phone with the sound off. If you can't follow it, add or enlarge captions. Then check the file size and length against the post or ad limits above, and keep the SRT next to the video file so it's ready when you set up the ad.
Turning a webinar into LinkedIn clips by hand
If you'd rather do it yourself, here is a workflow that fits LinkedIn's limits and works with free tools:
- Watch or skim the recording and note three to five moments that make sense on their own: a clear answer, a surprising number, a short story. Aim for 30-90 seconds each.
- Cut each moment in a video editor, starting on the first word of the point, not the question before it.
- Reframe to 4:5 or 1:1. Put the speaker in the centre; drop the slide area if it's unreadable on a phone. Use the free video aspect ratio calculator to get exact pixel sizes, such as 1080×1350 for 4:5.
- Add captions. Burn them in for organic posts, and keep an SRT file for ads.
- Check the specs: under 15 minutes and 5 GB for a post; for an ad, MP4 between 75 KB and 500 MB.
- Write the post text with the takeaway in the first line, and link to the full recording in a comment or the post.
- Space the clips out, one or two a week, rather than posting them all at once.
Doing this for one webinar takes an hour or two. The QuickVeed section below shows how to do the finding, reframing and captioning in one step.
Organic post or ad: which numbers apply
The two sets of specs differ, so check which one you're working to. Posts allow more formats (MOV, WebM, MKV and others), up to 5 GB and 15 minutes. Ads are MP4 only, up to 500 MB, and from 3 seconds to 30 minutes, with captions as a separate SRT file. A video that works as a post can fail as an ad if it's a MOV or over 500 MB, so export ad versions as MP4 from the start.
Doing it in QuickVeed
Most LinkedIn video for a business comes from things you've already recorded: webinars, podcasts, sales demos. QuickVeed handles the editing.
- Webinar to clips: upload the recording (up to 3 hours) to Podcast to Clips. It's transcribed at 1.5 credits a minute, rounded up, and the AI suggests 3-10 clips of 15-90 seconds. Choose 1:1 or 9:16 (or keep the original shape), a speaker-following crop and a caption style; each clip is 3 credits. Post or schedule to LinkedIn on Boost (3 accounts) or Scale (10).
- Captions and SRT files: Captions & subtitles transcribes videos up to 3 hours, lets you edit each line, and downloads SRT, VTT or TXT, which is the SRT file LinkedIn ads ask for. It can also burn captions in, in 11 styles, from 3 credits a copy. Translate into 32 languages for international audiences.
- Explainers without filming: AI avatars speak a typed script for 63 credits per 10 seconds (up to 30 seconds per video), useful for short internal or product updates.
Frequently asked questions
What is the best video size for LinkedIn?
For the feed, 1080×1350 (4:5) or 1080×1080 (1:1). LinkedIn accepts ratios from 1:2.4 to 2.4:1, and lists 4:5 as the recommended vertical ratio for video ads.
How long can a LinkedIn video be?
Up to 15 minutes for a regular post, per LinkedIn Help. Video ads can run from 3 seconds to 30 minutes, and LinkedIn recommends 15-30 seconds.
What is the maximum video file size on LinkedIn?
5 GB for a regular post. Video ads must be between 75 KB and 500 MB.
What video format does LinkedIn accept?
Posts accept MP4, MOV, AVI, WebM, MKV, WMV and several more. Ads must be MP4 with H.264 or VP8 video.
Can I add captions to a LinkedIn video ad?
Yes, as an SRT file. LinkedIn's spec page says only text is supported, without custom formatting such as font colours.
Does vertical video work on LinkedIn?
Yes. Posts accept ratios up to 1:2.4, and ads accept 9:16 and 4:5. 4:5 is a good middle ground for the feed.
Try it with your own video
Turn your last webinar into LinkedIn clips with captions. Try the free tools first, then upload a video when you want captions, clips or dubbing. QuickVeed plans start at $18/month, and new accounts get a 14-day trial with 75 credits, no card needed. Sign up or see pricing.
Sources
Competitor details in this post were checked against these public pages in October 2026. Products and prices change, so confirm with each vendor before you decide.
