LinkedIn video ads need under 30 fps: render at 24 or 25 on Sume

For a LinkedIn video ad, pick 24 or 25 fps in Sume. LinkedIn's help page lists frame rate as "Less than 30 FPS", which read literally excludes 30. Sume's Timeline output.fps and trim output.fps accept 24, 25, 30 and 60, so 24 and 25 are the two values that satisfy the rule. A 30 fps render is the common default, and it is the one to avoid here.

Spec and setting side by side

The LinkedIn column is from the vendor page. The Sume column is from the Timeline and trim docs.

Steps

• Read the source rate with video_inspect and frames: false, which returns the probe without stills.
• If you make a new clip from a longer one, send output: {"fps": 24} with precision: "exact" to trim. The docs say output is exact only.
• If you assemble several clips, set output.fps to 24 or 25 on the Timeline render. Without it, the render follows the sources, and a 30 fps source gives 30.
• Read warnings[] for output_fps_resamples_sources. It means some source was repeated or dropped frames to match, which can show as judder.

Pick 24 when the footage is cinematic or came from a video model at 24 fps. Pick 25 when you shot it in a 25 fps region. Converting from 30 to either one drops frames, so check a motion-heavy shot after you render.

Reading the rule carefully

LinkedIn's wording is "Less than 30 FPS". A plain reading says 29.97 passes and 30 does not, but Sume offers no fractional output rate, so the practical choices are 24 and 25. If your source is 30 fps, you can still use it: set the output to 24 or 25 and let the job drop frames, or pick a different master.

When you convert 30 to 25, one frame in six is dropped, which is usually less visible than converting to 24 on fast pans. For a talking-head clip it makes little difference. For a product turntable, look at the result before you commit a budget to the whole set.

If you generated the clip with a Sume video model, check the model's frame rate in the video router doc first. If it already comes at 24 fps, keep 24 and avoid any resample.

What Sume does not do

Sume does not validate a file against LinkedIn's rules or submit it to Campaign Manager. It also has no documented 29.97 or other fractional output option. Check the final file's frame rate, size and codecs before you upload.