In 2026, LinkedIn became the first professional network for B2B video broadcasting. But to publish in the wrong format is to see its scope divided by two before it has even caught the attention. This article compiles the official technical specifications of LinkedIn videos (organic and Ads), recommended dimensions by ratio, ideal durations according to your goals and the most common format errors. Whether you are a community manager, marketing manager or founder who publishes from his personal profile, the 5 minutes you spend here will avoid technical errors that cost visibility.
In 2026, LinkedIn became the first professional network for B2B video broadcasting. Video consumption on the platform grew by 36% in one year (source: LinkedIn). Still, many companies still publish in the wrong format, with inappropriate ratios, files too heavy for an Ads campaign, or videos without subtitles that lose 79-80% of their audience in the first second.
This article gathers all the official technical specifications, recommended durations by content type, and practices that really make the difference on the B2B feed.
Why the technical format determines the scope of your videos
The LinkedIn algorithm favors native uploads. A video uploaded directly to the platform benefits from autoplay in the feed, better indexing and organic distribution significantly higher than an external link pointing to YouTube or Vimeo. This is a fundamental rule, often ignored.
The second is mobile consumption. More than 70% of LinkedIn visits are done from a smartphone. A 16:9 video released as it is on mobile displays with black stripes, reduces the visual surface and loses in impact. The choice of the ratio is not a matter of aesthetic preference, it is a strategic decision.
Third, the most underappreciated: the sound. According to LinkedIn Business, 79-80% of videos are viewed without sound. To publish without subtitles is to make your content mute for four out of five viewers.
LinkedIn video generates on average 5 times more interactions than a text or image post. But this leverage only works if the format is technically correct as soon as online. For a complete approach to the personal branding video LinkedInFormat choices are part of a broader content strategy.
Technical specifications: the complete reference table
Here are the two reference tables to keep: one for native organic publications, the other for LinkedIn Video Ads. These two contexts have distinct constraints, particularly on file weight and accepted formats.
Organic native video (feed and profile)
Data from the official LinkedIn help page (linkedin.com/help/linkedin/answer/a1323097).
| Parameter | Value |
|---|---|
| Recommended file format | MP4 (H.264/stroke) |
| Accepted formats | MP4, ASF, FLV, WebM, MKV, WMV2, WMV3, MPEG-1, MPEG-4, H264/AVC, VP8, VP9 |
| Min File Size | 75 KB |
| Max file size | 5 GB |
| Duration min | 3 seconds |
| Max duration | 10 minutes |
| Resolution min | 256 x 144 px |
| Max resolution | 4096 x 2304 px |
| Recommended resolution | 1920 x 1080 px (Full HD) |
| Accepted ratios | 1:2.4 to 2.4:1 |
| Framerate | 10 to 60 fps |
| Bitrate | 192 kbps to 30 Mbps |
| Audio Codec | AAFC |
LinkedIn Video Ads (sponsored content)
Data from official LinkedIn Marketing Solutions specs (business.linkedin.com).
| Parameter | Value |
|---|---|
| File format | MP4 only |
| Max file size | 500 MB |
| Duration | 3 seconds to 30 minutes |
| Ideal duration for engagement | 15 to 30 seconds |
| Video Codec | H.264/stroke |
| Audio Codec | AAC or MPEG4 |
| Framerate | 30 fps |
| Ratios supported | 4:5 / 9:16 / 16:9 / 1:1 |
The most important constraint to remember: the 500 MB limit for Ads is strict. The Campaign Manager automatically rejects files above this threshold. In organic, the limit goes up to 5 GB, which is not a problem in practice.
Recommended dimensions by ratio
| Ratio | Main use | Recommended dimensions |
|---|---|---|
| 16:9 (landscape) | Desktop, long content, corporate | 1920 x 1080 px |
| 1:1 (square) | Feed desktop + mobile, best compromise | 1080 x 1080 px |
| 4:5 (constricted portrait) | Mobile-first, feed | 1080 x 1350 px |
| 9:16 (vertical) | Full mobile, immersive | 1080 x 1920 px |
For Video Ads, LinkedIn specifies the ranges of dimensions accepted by ratio:
| Ratio | Dimensions min | Dimensions max |
|---|---|---|
| 4:5 | 360 x 450 px | 1080 x 1350 px |
| 9:16 | 360 x 640 px | 1080 x 1920 px |
| 16:9 | 640 x 360 px | 1920 x 1080 px |
| 1:1 | 360 x 360 px | 1920 x 1920 px |
One point about mobile vs desktop time
The maximum official time for a native upload on LinkedIn is 10 minutes. Some third-party sources mention a 15-minute limit via the desktop app, but this value is not explicitly confirmed in the official LinkedIn documentation. As a precaution, use 10 minutes as a reference limit.
For LinkedIn Ads, the duration can technically reach 30 minutes, but the optimal duration for engagement is between 15 and 30 seconds.
Note: on mobile, LinkedIn adds margins around videos published in 9:16 to standardize the display in the feed. This is often ignored in production.
Which format to choose according to your goal?
Technical specs define what is possible. The editorial objective defines what is effective. Here's how to choose.
brand awareness and personal branding: the 1:1 square
1:1 is the most versatile format on LinkedIn. It is displayed in full width on mobile and occupies more surface in the feed than a 16:9. It maximizes the visual impact without adapting the export according to the device.
Recommended duration: 30 to 90 seconds. Beyond that, the completion rate drops.
Concrete use cases: short customer testimonial, founder portrait, enhancement of a realization. For the projects of personal branding video LinkedIn, Biux systematically exports this ratio from the assembly phase.
Employer brand: vertical 4:5 or 9:16
More than 70% of LinkedIn visits are done from a smartphone. The 4:5 and 9:16 adapt to this use by occupying the screen almost entirely, which increases the viewing time.
Recommended duration: 30 to 60 seconds. Authenticity takes precedence over duration.
Use case: employee portrait, immersion in the premises, recruitment announcement. For concrete examples of this format, see our Employer Brand Video Achievements.
Corporate and institutional content: the 16:9
16:9 remains the reference format for long-form content, perceived as more solemn and premium on desktop. It is suitable for corporate presentations, institutional films and product launches.
Recommended duration: 60 to 180 seconds. The context requires time, the audience viewing this type of content is intentional.
For the projects of Corporate Film LinkedIn16:9 often remains the basis of production, which can then be broken down into 1:1 or 4:5.
Advertising LinkedIn Ads: 1:1 or 4:5
In sponsored campaigns, 1:1 is the most powerful format: compact, strong presence in the feed, desktop and mobile compatible.
4:5 is best suited for mobile-oriented campaigns, especially for on-the-go audiences.
Ideal duration: 15 to 30 seconds for awareness campaigns. Up to 90 seconds for conversion campaigns where the audience is already engaged.
Constraint not to forget: max weight 500 MB, MP4 format only.
Recommended durations depending on the content type
This is the shortcoming of most of the resources available on the subject: they give a generic “ideal” duration without taking into account the type of content. However, an Ads spot and a corporate film do not have the same rules of engagement.
| Type of content | Recommended duration | Logical |
|---|---|---|
| Awareness / Ads | 6 to 15 seconds | Maximum completion rate |
| Snack content / quick advice | 15 to 40 seconds | Videos under 60 seconds generate 53% more engagement |
| Customer testimonial | 45 to 90 seconds | Credibility comes before brevity |
| Corporate film / presentation | 60 to 180 seconds | Intentional audience, context required |
| Educational or expert content | 90 to 180 seconds | Mid-length optimal for B2B |
| Recruitment Video | 60 to 120 seconds | Authenticity matters more than the short format |
According to LinkedIn, videos less than 30 seconds in length have a 200% higher completion rate compared to longer videos. This figure must be put into perspective: it applies to short formats designed for awareness, not to background content where the duration is justified.
5 Format Mistakes That Penalize Your Videos
Upload in 16:9 without adapting the ratio to mobile
Result: black stripes, reduction of the visual surface, loss of impact in the feed. The solution is simple: export in 1:1 or 4:5 for publications intended for the standard feed.
Exceeding 500 MB for an Ads campaign
LinkedIn’s Campaign Manager automatically rejects files above this limit. The solution: compress to H.264 MP4 before uploading, with a tool like Handbrake or Adobe Media Encoder.
Neglect the subtitles
79% to 80% of LinkedIn videos are watched without sound (source: LinkedIn Business). Without subtitles, the message does not pass for the majority of spectators. Two options: an uploaded .SRT file when published, or subtitles burned directly into the video (open captions) to ensure readability regardless of the player.
Share a YouTube link instead of uploading natively
An external link does not have autoplay in the feed. The organic range is significantly reduced compared to a native upload. Best practice: upload natively on LinkedIn, YouTube serves as a secondary storage or distribution channel.
Ignore the miniature
On desktop, autoplay is not systematic. A generic or fuzzy thumbnail reduces the click-through rate before playback. Recommended specs for thumbnail: 1280 x 720 px (16:9 ratio), JPG or PNG format, max weight 2 MB.
Publication and optimization: the parameters that matter
The format is a necessary condition, not enough. The publication itself influences the distribution.
Best days to post: Tuesday, Wednesday, Thursday. The most engaging slots: 7am-8am, 12pm-2pm, and after 5pm. These windows correspond to the moments of mobile consultation during trips and lunch breaks.
For each video publication, systematically complete:
- The title of the post (150 characters maximum)
- The personalized miniature
- The .SRT subtitle file
A technical point to know: LinkedIn counts a view from 2 seconds of continuous reading, with at least 50% of the player visible on the screen. This criterion directly influences your view rate displayed in analytics.
End the video with an explicit call to action. On LinkedIn, the verbal call-to-action (“visit our site”, “contact us”) remains more efficient than a simple CTA displayed on the screen.
What Biux recommends for your LinkedIn videos
At Biux, we work exclusively in B2B, which fundamentally changes the approach of LinkedIn video. The most common mistake we see: companies that invest in serious production and then publish in a single ratio. The result: a 16:9 corporate video that appears in reduced format on mobile, where the majority of the audience is.
Our approach from a single shoot: deliver several exports simultaneously. The same shot allows to release a 16:9 master for the corporate film, a 1:1 for the LinkedIn posts of the leader, and a 4:5 for the mobile campaigns. The cost of production is not multiplied, but the broadcast coverage is multiplied.
On production quality: LinkedIn technical specs are relatively flexible (up to 5 GB, 4K accepted). It is not the platform that limits quality, it is the level of production. A well-lit, well-framed and well-sounded video holds much longer attention than a poorly-stabilized smartphone video, no matter the ratio. It is this quality differential that translates into engagement and completion metrics.
For your LinkedIn projects, be it Employer Brand Video Achievements or personal branding content, Biux supports companies based in Paris and Île-de-France with a production adapted to the distribution formats from the framing phase.
FAQ
How big is the video for LinkedIn?
The maximum size for an organic native upload is 5 GB (minimum 75 KB). For LinkedIn Ads, the limit is 500 MB. The recommended resolution in both cases is 1920 x 1080 px (Full HD). For the ratio, the 1:1 (square, 1080 x 1080 px) offers the best compromise between desktop and mobile display.
What is the maximum length of a video on LinkedIn?
In organic native upload, the maximum duration is 10 minutes (minimum duration: 3 seconds). For LinkedIn Ads, the technical limit is 30 minutes, but the optimal duration for engagement is between 15 and 30 seconds. For organic content, the recommended duration varies depending on the lens: 15 to 40 seconds for snack content, 45 to 90 seconds for a customer testimonial, 60 to 180 seconds for a corporate film.
What ratio to choose for a LinkedIn video?
1:1 (square) is the best compromise: it is fully displayed on desktop and mobile, occupies more space in the feed than a 16:9, and is accepted organically as well as in Ads. 4:5 or 9:16 is preferred for mobile-first content (employer brand, recruitment). 16:9 is still suitable for long-form, institutional or desktop-first deployment.
Do I need to add subtitles?
It’s not a technical requirement, but it’s essential in practice: 79-80% of LinkedIn videos are watched without sound, according to LinkedIn Business. Without subtitles, your message does not pass for the vast majority of viewers. LinkedIn accepts subtitle files in .SRT format. The recommendation is to use subtitles engraved directly in the video (open captions) to ensure readability regardless of the device or player.
