Videos

LinkedIn video maker

LinkedIn's own advice to advertisers is to think like a silent film director. Video autoplays with the sound off in the feed, the message has to land in the first ten seconds, and the platform reports that videos of 7 to 15 seconds see up to a 300 percent lift in completion rate.

Create a video with OneCraftThe four accepted ratios, the mobile only rule for vertical, and how short is short enough

A video frame titled procurement cycle times, 400 manufacturers, with 34 days median beside 11 days for the top quartile. — The finding in the opening frame of a fictional analyst's video, sized to read while the feed plays it silently.

The ratio table, and the mobile trap

LinkedIn accepts four shapes for a video ad. 16:9 landscape is recommended at 1920 by 1080 or 1200 by 675, with a floor of 640 by 360. 1:1 square runs from 360 to 1920 on each side. 4:5 is recommended at 720 by 900. 9:16 is recommended at 720 by 1280. The trap is that 9:16 only renders vertically on mobile, and only above certain app versions, so on desktop a vertical asset does not get the frame you designed. For reach across both, 16:9 is the safe shape.

Short, and shorter than you think

The specification allows 3 seconds to 30 minutes and recommends 15 to 30 seconds for awareness, with in-stream running to 90. LinkedIn's own best practice guidance is blunter: land the message in the first ten seconds, or the first five on a thirty second creative, and the completion rate lift is quoted for the 7 to 15 second band. Short length here builds 3 to 6 scenes, which at promo pacing is about ten seconds, and that is the right target.

Silent by default

LinkedIn video ads autoplay muted. LinkedIn's own posts have long cited around 80 percent of views happening with the sound off, a figure that is dated but still directional. Practically this means the on-screen copy is the ad and the narration is a bonus. Captions here are burned into the picture, generated from the narration, so they travel with the file rather than depending on anything LinkedIn does.

Its caption files are unusually strict

If you also want a selectable caption track on LinkedIn, it must be an SRT file, text only, with no formatting or styling tags at all. That is stricter than most platforms and it catches people who export a styled VTT. The burned in captions produced here are part of the picture and are unaffected, but they are also not selectable, so treat the two as separate jobs.

How it works, in three steps

Step 1
Build 16:9 unless you know it is mobile only
Landscape renders correctly everywhere on LinkedIn. Vertical is mobile only, so it is a deliberate choice rather than a default.
Step 2
Open with the finding, not the setup
On a professional feed the number is the hook. Put your strongest figure in the first scene as a stat rather than building up to it.
Step 3
Keep the file inside 500 MB
LinkedIn ads accept 75 KB to 500 MB. A short 1080p export sits far below that, which is another reason not to reach for 4K here.

The full walkthrough with screenshots is in the guide Make a promo video with AI voiceover.

Limits worth knowing

LinkedIn accepts 1:1, and the square canvas here is implemented but hidden from the pickers, so square is not an option you can pick.
LinkedIn ads require MP4 with H.264 or VP8 and under 30 frames a second. Exports here are MP4, H.264, 30 fps, which sits right at that boundary.
There is no LinkedIn publishing connection. You export and upload in Campaign Manager or as a page post.
4:5, which LinkedIn recommends at 720 by 900, is not a canvas offered here.

Questions people ask

Landscape or vertical for LinkedIn?

Landscape, in almost every case. Vertical only renders vertically on the mobile app above certain versions, so a desktop viewer, which LinkedIn has plenty of, does not see what you built.

How short is too short?

Three seconds is the platform floor and it is too short to say anything. The band worth aiming at is 7 to 15 seconds, which is where LinkedIn reports the completion lift, and short length here lands in it.

Do I need a separate caption file?

Only if you want selectable captions. The exported video already has captions burned in. If you add an SRT on LinkedIn as well, keep it plain text with no styling, which is what their uploader accepts.

What kind of video works on LinkedIn?

One with a specific number in it. Stat, chart and comparison scenes all read well on a professional feed, and the director will only use a figure you actually supply, since inventing one is banned.

Make your own video

The button opens the generator with this use case already described. Change the wording to match yours, generate, then edit anything you like.

Create a video with OneCraft

B2B video maker

Two findings from a professional network's own creative research shape everything about B2B video. A logo in the opening two seconds lifts click through by about a sixth. Human talent in that same window lifts it by around two fifths. And only about seven percent of the B2B ads analysed featured any human emotion at all.

TikTok video maker

TikTok is the one surface where the interface eats the most of your frame. The right rail of buttons, the caption block, the music ticker and the nav bar together claim a large part of a 1080 by 1920 canvas, and TikTok deliberately does not publish a single number for it because the zone changes with your caption length.

Facebook video ad maker

Facebook is the placement where the old advice still holds. The feed autoplays with the sound off, the ad footer sometimes does not render at all, and in-stream lets a viewer skip after five seconds. Everything about how a Facebook video ad is built follows from those three facts.

More finished work of this kind is on the video examples hub.