---
title: "Upscale a previously generated video to twice its resolution (2x). Pass the video `url` you received from `createVideo`, `createVideoFromReferences`, or `editVideo` - it must be a video you generated within the last 7 days; arbitrary external videos are not accepted. Only videos below 960x960 pixels can be upscaled (larger sources are rejected). Synchronous until September 10, 2026: the call blocks until upscaling finishes and returns the new video URL and its duration in seconds. Billed per second of video, independent of model, charged only on success. Pass an optional `request_id` to tag the result so you can locate it later via `GET /assets/videos/results`. Related tools: `createVideo` for image-to-video, `editVideo` to modify a generated video. Requires an API key (user scope). Async is the intended integration pattern: pass `async: true` and the call returns 202 with a job id - poll `GET /assets/jobs/{id}` (`getApiJob` in MCP), honouring poll_after_ms or long-polling with wait=30, until status is succeeded, whose result field is exactly the response documented for this operation. Synchronous responses are deprecated: they remain the default until September 10, 2026, after which requests default to async and return 202 with a job id; set `async: false` explicitly to keep synchronous behavior during and after the transition. Synchronous calls run on the same queue: the response carries an X-Ludo-Job-Id header, and a job still running after 15 minutes comes back as 202 with the job instead of an error. Each account may have up to 50 generations queued or running at once via the API; a request beyond that returns 429 (code PENDING_JOBS_LIMIT)."
method: POST
path: "/assets/video/upscale"
tags: ["Videos"]
---

# Upscale a previously generated video to twice its resolution (2x). Pass the video \`url\` you received from \`createVideo\`, \`createVideoFromReferences\`, or \`editVideo\` - it must be a video you generated within the last 7 days; arbitrary external videos are not accepted. Only videos below 960x960 pixels can be upscaled (larger sources are rejected). Synchronous until September 10, 2026: the call blocks until upscaling finishes and returns the new video URL and its duration in seconds. Billed per second of video, independent of model, charged only on success. Pass an optional \`request_id\` to tag the result so you can locate it later via \`GET /assets/videos/results\`. Related tools: \`createVideo\` for image-to-video, \`editVideo\` to modify a generated video. Requires an API key (user scope). Async is the intended integration pattern: pass \`async: true\` and the call returns 202 with a job id - poll \`GET /assets/jobs/{id}\` (\`getApiJob\` in MCP), honouring poll_after_ms or long-polling with wait=30, until status is succeeded, whose result field is exactly the response documented for this operation. Synchronous responses are deprecated: they remain the default until September 10, 2026, after which requests default to async and return 202 with a job id; set \`async: false\` explicitly to keep synchronous behavior during and after the transition. Synchronous calls run on the same queue: the response carries an X-Ludo-Job-Id header, and a job still running after 15 minutes comes back as 202 with the job instead of an error. Each account may have up to 50 generations queued or running at once via the API; a request beyond that returns 429 (code PENDING_JOBS_LIMIT).

`POST /assets/video/upscale`

## Request body

- UpscaleVideoPayloadPublic — Payload for upscaling a previously generated video to twice its resolution.
  - `video` string, required — URL of a video you generated in the last 7 days (returned by createVideo, createVideoFromReferences, or editVideo). External URLs are not accepted. Only videos below 960x960 pixels can be upscaled.
  - `request_id` string — Optional client-provided identifier, unique per request. Re-sending the same request_id returns the existing job instead of generating again. Also usable with the results endpoint.
  - `async` boolean — When true, return 202 immediately with a job id instead of waiting for the result. Poll GET /assets/jobs/{id}. Defaults to false (synchronous).

## Response `200`

Success

- VideoResult
  - `url` string — URL to the generated video file
  - `duration` number, float — Duration of the video in seconds
  - `has_audio` boolean
  - `request_id` string
  - `created_at` integer

## Other responses

- `202` — Accepted - the generation was queued (async: true, or a synchronous call still running after 15 minutes). Poll GET /assets/jobs/{id}.
- `400` — Error

## Changes

- **2026-08-30** `a8a0b85d1839` — 1 info
  - added the success response with the status `202`

[Change history](https://skmtc.dev/ludo/apis/ludo-ai-api/changes/assets/video/upscale/post.md)

---

[API](https://skmtc.dev/ludo/apis/ludo-ai-api.md) · [All operations](https://skmtc.dev/ludo/apis/ludo-ai-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/ludo/ludo-ai-api/revisions/37a21589e770/schema)