One 16:9 size for TikTok and LinkedIn ads: 960x540 to 1920x1080

Landscape 16:9 files from 960x540 to 1920x1080 clear both platforms' size lists, so 1280x720 and 1920x1080 each work for one shared render. TikTok lists horizontal 16:9 at 960x540 or larger. LinkedIn lists 16:9 from 640x360 to 1920x1080 (pages read 2026-10-09). The overlap is therefore the TikTok lower edge and the LinkedIn upper edge.

Which sizes land where

Common 16:9 sizes fall on either side of the overlap, and Sume's even-size rule removes a few awkward ones.

A trap in the odd size

LinkedIn recommends 1200x675 as well as 1920x1080. 675 is odd, and the timeline docs require even width and height. Use 1280x720 or 1920x1080; the odd-height post has the detail.

Price and time

The render price is the same at both sizes: $0.10 per output minute, rounded up. A 45-second landscape ad is one billed minute, $0.10, at 1280x720 or 1920x1080. TikTok's page allows up to 10 minutes and LinkedIn allows 3 seconds to 30 minutes with 15 to 30 seconds recommended, so a shared cut should be as short as the stricter recommendation.

If your master is vertical, a landscape version needs a different composition, not just a crop. The timeline fit: "blur" puts the vertical clip in the middle with a blurred fill; contain letterboxes it. Both keep the whole picture, unlike cover.

Settings to send

In the timeline body, set output.width 1280, output.height 720 and output.fps 25. The 25 matters for LinkedIn, whose page requires a frame rate under 30 FPS; TikTok's page gives no frame rate. The TikTok page is also the only one of the two with a bitrate, at least 516 kbps, and Sume has no bitrate field, so read the file size afterward. See the three-ratio TikTok post for the other two TikTok shapes.

To confirm what you actually rendered, read the file back with video inspect. Send frames: false and you get only the probe facts for the clip, with no stills. The default mode is sync and waits up to 30 seconds. Compare the probe's size against the table above before you upload to either platform; the ad managers will tell you about a size problem, but only after you have uploaded.