Platform specs
LinkedIn video size, aspect ratio and file limits
By the KeyMo team · Updated
LinkedIn's help page accepts member video from 256x144 to 4096x2304 pixels, in aspect ratios from 1:2.4 to 2.4:1, at 75 KB to 5 GB and 10 to 60 fps. A 1080x1920, 30 fps vertical clip fits the ratio, resolution, frame rate and file size ranges. LinkedIn names no single recommended size for ordinary posts.
Member video size limits, as of 11 October 2026
These numbers are from LinkedIn's video sharing help page, read on 11 October 2026. They are accepted ranges, not recommendations.
| Item | LinkedIn states |
|---|---|
| Aspect ratio | 1:2.4 to 2.4:1 |
| Resolution | 256x144 to 4096x2304 |
| File size | 75 KB to 5 GB |
| Frame rate | 10 to 60 fps |
| Bit rate | 192 Kbps to 30 Mbps |
| Duration | 2 or 3 seconds to 15 minutes (see the length page) |
| File types | MP4, MOV, AVI, WebM, MKV, WMV and others, on desktop, iOS and Android |
The help page also warns that a file type that looks accepted can still fail to process; ProRes is its example. LinkedIn's Company Page article lists file types differently and says MOV and AVI are no longer supported there. The two pages disagree, so a Page admin should test an MP4.
What LinkedIn does not state
- A recommended size or ratio for ordinary member video. Only the accepted ranges are given.
- A crop size for the feed. The pages we read give no pixel figure for how a video is trimmed.
- Safe zone pixels. The help page tells you to keep text, logos and key elements away from the top, bottom and sides so the interface does not cover them, but the guide on the page is an image and the text carries no numbers.
Vertical and other sizes for video ads
Sponsored video has its own table. The vertical rows are the ones that matter for a 9:16 clip.
| Ratio | Recommended size | Allowed range |
|---|---|---|
| Vertical 9:16 | 720 x 1280 | 360 x 640 to 1080 x 1920 |
| Vertical 4:5 (marked recommended) | 720 x 900 | 360 x 450 to 1080 x 1350 |
| Square 1:1 | Not stated | 360 x 360 to 1920 x 1920 |
| Landscape 16:9 | 1920 x 1080 or 1200 x 675 | 640 x 360 to 1920 x 1080 |
Ad files also differ from posts: MP4 only, H.264 or VP8, between 75 KB and 500 MB, and a frame rate of less than 30 FPS. That last point matters for KeyMo clips, which are 30 fps. A 30 fps file is at the limit, not under it, so test a clip in Campaign Manager or re-encode it before using it as sponsored content.
Will a vertical clip fit?
A 1080x1920 clip has a 9:16 ratio, which is 0.5625. LinkedIn's range runs from 1:2.4 (about 0.417) to 2.4:1, so a 9:16 video sits inside it. That is our arithmetic, not a sentence from LinkedIn. The 1920 pixel height is well under the 2304 maximum in the resolution range.
File size is the other worry. Take LinkedIn's highest accepted bit rate, 30 Mbps, as the worst case. A 90-second clip at that rate is about 338 MB (30 x 90 / 8), under the 500 MB ad cap and a small fraction of 5 GB. Even 15 minutes at 30 Mbps is about 3.4 GB. KeyMo's longest clip is 90 seconds, so size is unlikely to be the problem; a wrong ratio or an unsupported file type is more likely.
Pages that talk about "LinkedIn Reels" or a vertical feed are not describing a separate spec we could find: the LinkedIn help pages list one video specification. For the 9:16 basics, see the aspect ratio glossary.
Sources: Video sharing troubleshooting (LinkedIn Help) (checked 11 October 2026); Video specifications for your LinkedIn Pages and Career Pages (LinkedIn Help) (checked 11 October 2026); Video ads advertising specifications (LinkedIn Marketing Solutions Help) (checked 11 October 2026).