Trim a UGC ad down to its hook: frame-accurate cut for $0.02

Sume video trim cuts a start/end range from a hosted clip into a new MP4 for $0.02 a job. Exact vs keyframe precision, the 0.2-900 s duration, and import first.

5 min readSume
All posts

To cut the first seconds of an ad into a hook-only clip, call POST /v1/video-trim with video_url, start and exactly one of end or duration. Sume returns a new MP4 and leaves the source untouched. The public rate is $0.02 per job, with no model inference, only worker ffmpeg. Source: Video trim.

The fields

Use exact for hook cuts, because keyframe may start a GOP early.

Video trim fields, from the Sume docs (read 2026-10-03).
FieldBehaviour
startIn-point in seconds, required
end or durationExactly one; duration is 0.2-900
precisionexact (default, frame-accurate re-encode) or keyframe (stream copy)
audiokeep (default) or drop
Idempotency-KeyRequired header

Import first

The source must be on this workspace's media.sume.com host. Off-host URLs are rejected at admit, so import with POST /v1/media-imports first.

Limits

Source up to 1800 s, output between 0.2 s and 900 s. The result's video_url is a new artifact, and you can drop it into a timeline with source_in 0.

Sources

Related posts

More in Use cases

All Use cases posts

Written by Sume