Edit an existing ad video with Gemini Omni Flash on Sume

Sume's Video Router takes a video_url for video edit on gemini-omni-flash-1.1. How to send an edit request and why sume/auto won't tell you the model.

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Send an existing clip to POST /v1/video-router/generate with video_url and a gemini-omni-flash-1.1 model to edit it. Read Video Router for the current request fields and models, because they change between releases.

Router behaviour to know

Name gemini-omni-flash-1.1 explicitly when you want to know which model produced the edit; sume/auto does not disclose it.

Video Router facts from the Sume docs (read 2026-10-03).
TopicFact
Edit inputvideo_url is the edit source; the prompt describes the edit
Not allowed with editimage_url, end_image_url, reference_*_urls, aspect_ratio, duration
resolutionOptional, default 720p
IdempotencyIdempotency-Key supported

Editing vs regenerating

A fresh generation starts from a prompt, frame_images or references, while an edit starts from your clip. See Video generation. Pick edit when you already have the clip and only want to change it.

Source rules

video_url cannot be combined with image or reference inputs, so an edit request carries only the clip and the prompt.

Sources

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