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API Reference for ltx/ltx-video-to-video-hdr, served by Comfy Router from LTX. Input: Video · Output: Video

Quick start

Create a key in your Comfy workspace and export it as COMFY_API_KEY. The Python and TypeScript snippets use the Comfy SDKs (pip install comfy-sdk and npm install @comfyorg/sdk); the cURL snippet is the same call over raw HTTP. Model ID: ltx/ltx-video-to-video-hdr Endpoint: POST https://api.comfy.org/v2/models/ltx/ltx-video-to-video-hdr
The same body, sent to POST https://api.comfy.org/v2/models/ltx/ltx-video-to-video-hdr/requests. Router answers 201 with a request_id as soon as the run is admitted, and the result is collected once it is ready, from this process or another one. Queued delivery walks through status, cancellation and collection.

Schema

Input

string
default:"\"acescg\""
Color space of the OpenEXR frame sequence at result.exr_frames_url. It does not affect result.video_url.Possible values: acescg, acescct, srgb_linear, aces2065-1
string
required
Input video as a publicly accessible HTTPS URL or a base64 data URI. H.264 or HEVC in MP4, MOV or MKV, up to 200 MB by URL. Width and height must fit within 3840x2160 in either orientation.
Generated from the schema Router serves at GET /v2/models/ltx/ltx-video-to-video-hdr/openapi.json, the same document it validates a call against before the request reaches the provider.

Output

string
Job completion timestamp (ISO 8601)
string
Job creation timestamp (ISO 8601)
object
Present when status is failed
string
string
string
Unique job identifier
object
Present when status is completed; output URLs expire 24 hours after completion
string
URL of a ZIP of per-frame OpenEXR images in the requested color space
string
URL of the HDR video, a 10-bit HEVC BT.2020/HLG MP4
string
Job status (pending, processing, completed, failed)

Examples

Input

Output

Before you ship

The SDKs create an Idempotency-Key and reuse it for automatic retries. For manual retries, reuse the original key. Router can hold the connection for up to 10 minutes. When a request fails, Router sends an X-Comfy-Error-Type response header explaining why. A 422 means Router rejected the input before calling the provider, and a 413 means the request body was larger than Router accepts. Download generated assets promptly because result URLs can expire. Any size limit named in a field description above is the provider’s own bound on that field, quoted from the provider’s specification. Router applies a separate cap to the whole request body, which base64-encoded media counts against: see request body size. This page documents one partner model called through Comfy Router. The same comfy-sdk / @comfyorg/sdk package also ships a second client, for running a whole ComfyUI workflow graph on Comfy Cloud: Comfy(api_key=...) / new Comfy({ apiKey }), with client.workflows, client.assets and client.jobs. See Comfy SDKs.

Headers

Authentication, idempotency, request IDs, error buckets, retry pacing, spend limits.

Using the Router API

Model discovery, validation errors, retries, and billing.

Limitations

What Router does not do today, and what to use instead.