# JoyAI-Video-Edit API

> JoyAI-Video-Edit as a hosted realtime API. A source-guided edited stream on main_video. $0.0021 per billable second.

Source: https://windflow.online/models/joyai-video-edit · Live video transformation · Windflow Labs

## What it is

JoyAI-Video-Edit is a 16-billion-parameter autoregressive diffusion model from JD's open-source group for real-time, open-ended video editing. On Windflow you stream a webcam track or upload a clip, give an edit instruction and an optional reference image, and receive an edited stream guided by those inputs. Source motion and identity are evaluation criteria, not guaranteed invariants.

## Specifications

- **Architecture:** 16B multimodal DiT, chunk-autoregressive, two-step distilled
- **Resolution:** 840 × 480 interactive tier; 1248 × 720 detail tier
- **Chunk:** 8 frames
- **Control latency:** About 0.9 s from camera frame to the worker socket at 840 × 480, before the browser cushion
- **Inputs:** A source clip you upload or a live webcam track, an edit instruction, and optionally a reference image
- **Outputs:** A source-guided edited stream on main_video
- **Delivery:** WebSocket (H.264) · WebRTC
- **Session protocol:** sdk.realtime.v2
- **Price:** $0.0021 per billable second

## Pricing

$0.0021 per billable session-second ($7.56/hr of billable time). Billing starts at the session's first generation_started event and stops when the session is released or ends. Queueing, worker startup, time before generation starts and the documented reconnect grace are not billed. After generation starts, paused or unwatched time remains billable; release the owner session to stop the meter.

## Use cases

- Instruction-based edits to live video: change clothing, background or style with a sentence.
- Reference-guided edits that carry a specific look onto a person or object.
- Higher-detail edits of uploaded clips using the 720p detail tier.
- Evaluating open-ended video editing before building a pipeline around it.

## Where it comes from

- [jd-opensource/JoyAI-Video-Edit on GitHub](https://github.com/jd-opensource/JoyAI-Video-Edit) — Apache-2.0

## FAQ

### What resolutions does JoyAI-Video-Edit offer?

Two tiers: an interactive tier at 840 × 480 and a detail tier at 1248 × 720. Super-resolution can be applied to the delivered stream.

### Is an edit applied to the whole clip?

The instruction describes the intended change, but output is generated video. Unmentioned details, motion or identity can change. Evaluate the complete clip and the transition after an instruction update, not only one selected frame.

### Does the published latency experiment measure my browser's response?

No. The recorded MI355X experiment uses a worker-loopback probe and separates camera-frame-to-edited-pixels from edited-pixels-to-socket timing. Capture, network, browser decode and presentation need evaluation on your actual client path.

### Can I add the latency-stage medians to estimate a total median?

No. An end-to-end median or tail percentile requires paired start/end timestamps for the same frames. Independent stage percentiles cannot establish the percentile of the complete path.

### How much does JoyAI-Video-Edit cost on Windflow?

JoyAI-Video-Edit costs $0.0021 per billable session-second ($7.56/hr of billable time). Billing starts at the session's first generation_started event and stops when the session is released or ends. Queueing, worker startup, time before generation starts and the documented reconnect grace are not billed. After generation starts, paused or unwatched time remains billable; release the owner session to stop the meter. There is no subscription.

### How do I get access to JoyAI-Video-Edit?

Windflow is in private beta. Request access from the sign-up page, or ask for a live demo of JoyAI-Video-Edit. Approved accounts start with $5 and four concurrent sessions.

### Is JoyAI-Video-Edit always running?

No. Model capacity is brought up on demand rather than kept standing. Live readiness for each model is published at api.windflow.online/v1/status, and a live demo can be arranged on request.

## Related guides

- [Choosing a realtime video model: a decision guide for 12 hosted models](https://windflow.online/guides/choosing-a-realtime-video-model)
- [How to measure realtime video API latency and responsiveness](https://windflow.online/guides/measure-realtime-video-latency)
- [JoyAI live editing latency: what the 443 ms measurement includes](https://windflow.online/guides/joyai-live-editing-latency-measurements)
- [Realtime video API: generate, edit and control live AI video](https://windflow.online/guides/realtime-video-api)
- [How to use the JoyAI Video Edit API](https://windflow.online/guides/joyai-video-edit-api)
- [How to write edit instructions for realtime video editing](https://windflow.online/guides/realtime-video-edit-instructions)
- [How to recover a realtime video stream after a dropped connection](https://windflow.online/guides/recover-a-dropped-realtime-video-stream)