Gemini Omni Flash 1.1 Video Edit - Unifically

Edit an existing uploaded video with Google’s Gemini Omni Flash 1.1 video edit model. Provide exactly one source video URL in reference_video_urls. Omni Flash 1.1 edit supports everything the original edit model does, plus native 360p output at half the 720p price. Try it in the browser: Gemini Omni Flash 1.1 API playground.

Model

google/gemini-omni-flash-1.1-video-edit

Parameters

Parameter	Type	Required	Default	Description
`reference_video_urls`	string[]	Yes	-	Publicly reachable source video URL. Must contain exactly one URL. Uploaded source videos must meet the limits below.
`prompt`	string	Yes	-	Edit instruction. Use `@Video1` to refer to the source video and `@ImageN`/`@CharacterN` for extra references.
`reference_image_urls`	string[]	No	-	Publicly reachable image URLs used as edit references. They count toward the total reference limit.
`reference_characters`	array	No	-	Character references for the edit. Max 3 character items. Each character may include 1-10 `image_urls`. Supports per-character `voice` or `custom_voice`. See available voices.
`seed`	integer	No	Random	Seed sent with the edit request. If omitted, a seed is generated automatically and returned when available.
`resolution`	string	No	`"720p"`	Output resolution. Allowed: `"360p"`, `"720p"`, `"1080p"`, `"4k"`. `"360p"` and `"720p"` generate natively — 360p at half the 720p price. With `"1080p"` or `"4k"`, the edited video generates at 720p and is upscaled as part of the same task before it completes. A completed video can also be upscaled later with `google/veo-3.1-upscale` — the same upscaler serves Omni Flash.
`start_frame`	integer	No	`0`	First source frame index included in the edit range.
`end_frame`	integer	No	Source end	Last source frame index included in the edit range. If omitted, the service uses the detected final frame when available.
`allow_audio_filtered`	boolean	No	`false`	When `true`, the generation runs without audio instead of failing when the audio track is filtered.
`nsfw_check`	boolean	No	`true`	Check uploaded media inputs for NSFW content

Limits

Limit	Value
Video references	1
Character references	3
Total video + image + character references	7
Uploaded source video size	Up to 1 GB
Uploaded source video length	Up to 30 seconds

Character References

Character references work exactly as on Gemini Omni Flash Video Edit: objects with image_urls (1-10 images), optional name, description, and a per-character preset voice or tuned custom_voice.

Example — 360p Edit

curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "google/gemini-omni-flash-1.1-video-edit",
    "input": {
      "reference_video_urls": [
        "https://example.com/source-video.mp4"
      ],
      "prompt": "Make @Video1 look like it was filmed underwater.",
      "resolution": "360p"
    }
  }'

Prompt References

Token	Refers to
`@Video1`	The source video for edit requests
`@Image1`, `@Image2`	Items from `reference_image_urls` only
`@Character1`, `@Character2`	Items from `reference_characters` only

Rejected Combinations

The same rules as Gemini Omni Flash Video Edit apply: exactly one source video URL, max 7 total references, characters as objects with image_urls, and a forward-moving frame range.

Response

{
  "code": 200,
  "success": true,
  "data": {
    "task_id": "abc123def456",
    "status": "processing"
  }
}

Volume discounts are available for almost all models. Reach out at contact@unifically.com to discuss custom pricing.