Three documents, three scopes
LinkedIn video requirements: three documents, not one spec
LinkedIn video requirements are published on three first-party pages that all rank for the same question, and they do not describe the same object. One is the versioned Videos API upload, one is Pages and Career Pages, and one is advertising. This page keeps those three documents separate rather than collapsing them into a single spec.
What are the LinkedIn video requirements?
They are not three versions of one answer. A page that merges them into a single table of “the” LinkedIn numbers is repeating the error the rest of the search results already make.
| Document | Governs | File size | Duration | Checked |
|---|---|---|---|---|
| Organic upload | The upload request itself, for a video owned by a member | 5 GB | Not published | |
| Pages and Career Pages | LinkedIn Pages and Career Pages, not a member-profile post | 75 KB to 5 GB | 3 seconds to 10 minutes | |
| Video ads | Sponsored Content video ads in the LinkedIn feed | Between 75 KB and 500 MB | Three seconds to 30 minutes |
A fourth LinkedIn page, Video sharing troubleshooting, also circulates. It splits duration by desktop and mobile rather than by surface, and it is where core records the frame and ratio ranges. It is not one of the three documents this page is reconciling, and its figures are not folded into any row above.
Which circulating number applies to an organic API post — and why an advertising block on the Videos API page is met first — is answered on LinkedIn video specifications. This page lists what each document actually states.
Organic upload requirements, from the Videos API
The Videos API is the only versioned LinkedIn source for video. The upload maximum sits on the required fileSizeBytes field of the initialize-upload request: 5 GB. Postdom records that figure as recorded, not enforced.
There is no published maximum duration for organic posting through the API. Core records that ceiling as not published — not published — rather than adopting a number from another document. The circulating ten-, fifteen- and thirty-minute figures, and the advertising block that sits above this request field, are scoped on LinkedIn video specifications.
How the LinkedIn API is shaped covers the version header, the four evidence sources, and why so little of this can be enforced.
Pages and Career Pages requirements
Video specifications for your LinkedIn Pages and Career Pages is a help article scoped to Page and Career Page video. It is unversioned. When it was re-read on , its relative “last updated” label read “4 years ago”.
File size
5 GB maximum, 75 KB minimum. The maximum corroborates the Videos API upload field; the minimum is stated here and not on that field.
Duration
10 minutes maximum, 3 seconds minimum. These numbers belong to Pages. Treating the 10-minute ceiling as the member-profile rule is the inversion this page exists to stop.
Formats
The article lists around fifteen accepted types and withdraws three, in these words: “We no longer support AVI, QuickTime, or MOV files.”
Frame, ratio, rate
Resolution 256x144 to 4096x2304; aspect 1:2.4 to 2.4:1; 10 FPS to 60 FPS; 192 KBPS to 30 MBPS. The pair bounds the frame, not width and height separately. Core records the same pair from the sharing page, not from this one.
Advertising video requirements
Video ads advertising specifications is a Sponsored Content specification. Re-read on , its relative “last updated” label read “1 month ago”. These figures are the ones most LinkedIn video guides repeat as if they were organic.
Length
Three seconds to 30 minutes for feed video ads. In-stream video ads can be up to 90 seconds. Both sentences are advertising. Neither is an organic API ceiling. LinkedIn’s own caveat, quoted: “In-stream video ads are currently in testing and being gradually released. You might not have access to them at this time.”
File size and format
Between 75 KB and 500 MB. MP4 only, with H.264 or VP8.
Named ratios
Not the Pages 1:2.4 to 2.4:1 pair. Each named ratio carries its own pixel range, re-read 2026-09-03:
- 16:9 — recommended 1920x1080 or 1200x675; range 640x360 to 1920x1080
- 1:1 — range 360x360 to 1920x1920
- 4:5 — recommended 720x900; range 360x450 to 1080x1350
- 9:16 — recommended 720x1280; range 360x640 to 1080x1920
The ads page also points at Connected TV Ads specifications as a further case. Those numbers are not reproduced here. Adding them to the feed-ad row would be a fourth collapse.
What Postdom checks, and what it only records
One of these is enforced. The rest are recorded with their evidence and their date.
Container format. Postdom sends video/mp4 and rejects anything else for LinkedIn. The narrowing is Postdom’s own. LinkedIn’s Pages page lists around fifteen accepted formats and withdraws three; it does not narrow to MP4.
File size. The 5 GB API figure is recorded rather than enforced, because Postdom’s own upload ceiling is 500 MB, an order of magnitude below LinkedIn’s, so nothing Postdom accepts could ever reach it.
Duration. Not checked. A limit invented from the Pages or ads document would reject video LinkedIn’s API does not say it refuses.
LinkedIn video specifications carries the same constants fact by fact, with each classification, for the organic-API case alone.
Questions about LinkedIn video requirements
What are the LinkedIn video requirements?
There is not one set. The Videos API states 5 GB on the request field and does not publish an organic duration ceiling. Pages and Career Pages state 75 KB to 5 GB and 3 seconds to 10 minutes. Advertising states 75 KB to 500 MB and 3 seconds to 30 minutes. Each figure is real and each belongs to the document that states it.
Why do three LinkedIn pages disagree?
They are answering different questions. The Videos API documents the upload. The Pages help article documents Page and Career Page video. The ads help article documents Sponsored Content. The disagreement is produced by pages that repeat one number without the object it belongs to.
Do Pages and ads share one aspect-ratio model?
No. Pages states 1:2.4 to 2.4:1 as a range. Ads name 16:9, 1:1, 4:5 and 9:16, each with its own pixel range. Collapsing those into one LinkedIn aspect ratio invents a specification neither page wrote.
Which LinkedIn video requirements does Postdom check?
The container format, and nothing else on this page. Postdom sends MP4 only — narrower than LinkedIn's Pages list, which accepts around fifteen types and withdraws three. The 5 GB upload figure is recorded rather than enforced because Postdom's own ceiling is lower and rejects first. Duration is not checked, because LinkedIn does not publish an organic API ceiling to check against.
Are Pages video requirements the same as a personal post?
LinkedIn does not say they are. The Pages article titles itself for Pages and Career Pages. Treating its 10-minute ceiling as the member-profile rule is the inversion this page exists to stop: that number is first-party, and it is scoped to company Pages.