Video Speed API - Speed Up or Slow Down Video 0.1x to 10x: Pricing, Documentation
by Pixazo
Video Speed API retimes a video from 0.1x to 10x. The audio is retimed with an atempo chain so voices keep their natural pitch instead of turning into chipmunks — the thing that gives most sped-up video away. Pass a speed multiplier: 2 for twice as fast, 0.5 for half speed. Send a video_url, poll the request, then download the MP4. Billing is per second, charged on the shorter of the source or the result, so speeding a clip up costs less.

Models Version
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Video Speed 1.0 API Documentation
https://gateway.pixazo.ai/media-tools/v1/video-speed
Authentication
All requests require an API key passed via header.
Pricing: Billed at $0.002 per second of video — billed on the shorter of the source or the result, so speeding a 60-second clip to 2x costs about $0.06.
Rounding: billing is per second but always rounds up to a whole second — a 5.06-second source bills as 6 seconds. The shortest billable job is 1 second.
Retries: this is an asynchronous job on shared encoding capacity, so a request can occasionally come back processing_failed or take much longer than usual. These are transient and succeed on a retry, and a failed job is never charged — the wallet hold is released. If you chain these tools, retry a failed step rather than failing the whole pipeline.
| Header | Type | Required | Description |
|---|---|---|---|
| Ocp-Apim-Subscription-Key | string | Yes | Your API subscription key |
Video Speed generate request
Request Code
POST https://gateway.pixazo.ai/media-tools/v1/video-speed
Content-Type: application/json
Cache-Control: no-cache
Ocp-Apim-Subscription-Key: YOUR_API_KEY
{
"video_url": "https://api-assets.pixazo.ai/media-api-test/t.mov",
"speed": 2
}
import requests
url = "https://gateway.pixazo.ai/media-tools/v1/video-speed"
headers = {
"Content-Type": "application/json",
"Cache-Control": "no-cache",
"Ocp-Apim-Subscription-Key": "YOUR_API_KEY"
}
data = {
"video_url": "https://api-assets.pixazo.ai/media-api-test/t.mov",
"speed": 2
}
response = requests.post(url, json=data, headers=headers)
print(response.json())
const url = "https://gateway.pixazo.ai/media-tools/v1/video-speed";
const headers = {
"Content-Type": "application/json",
"Cache-Control": "no-cache",
"Ocp-Apim-Subscription-Key": "YOUR_API_KEY"
};
const data = {
"video_url": "https://api-assets.pixazo.ai/media-api-test/t.mov",
"speed": 2
};
fetch(url, {
method: "POST",
headers: headers,
body: JSON.stringify(data)
})
.then(response => response.json())
.then(data => console.log(data));
curl -X POST "https://gateway.pixazo.ai/media-tools/v1/video-speed" \
-H "Content-Type: application/json" \
-H "Cache-Control: no-cache" \
-H "Ocp-Apim-Subscription-Key: YOUR_API_KEY" \
--data-raw '{
"video_url": "https://api-assets.pixazo.ai/media-api-test/t.mov",
"speed": 2
}'
Output
{
"request_id": "media-speed_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
"status": "QUEUED",
"polling_url": "https://gateway.pixazo.ai/v2/requests/status/media-speed_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}
Webhook (Optional)
Add the X-Webhook-URL header to your generate request to receive a POST callback instead of polling.
X-Webhook-URL: https://your-server.com/webhook/callback
Request Parameters - Video Speed generate request
| Parameter | Required | Type | Default | Allowed values / range | Description |
|---|---|---|---|---|---|
| video_url | Yes | string | — | HTTP(S) URL; ≤ 500 MB, ≤ 600 s | Publicly reachable HTTP(S) URL of the source video. |
| speed | Yes | number | — | 0.1 – 10 | Playback multiplier. 2 is twice as fast, 0.5 half speed. Audio is retimed with an atempo chain so voices keep their pitch. Must be a number — a quoted string such as "2" is rejected. Values outside 0.1 – 10 are rejected, not clamped. |
| keep_audio | No | boolean | true | true, false | Set false to drop the audio track. Must be a real boolean — the string "false" is rejected with a 400 before any charge. A source with no audio track always returns a silent video. |
Example Request
{
"video_url": "https://api-assets.pixazo.ai/media-api-test/t.mov",
"speed": 2
}
Response
{
"request_id": "media-speed_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
"status": "QUEUED",
"polling_url": "https://gateway.pixazo.ai/v2/requests/status/media-speed_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}
Request Headers
| Header | Value |
|---|---|
| Content-Type | application/json |
| Cache-Control | no-cache |
| Ocp-Apim-Subscription-Key | YOUR_API_KEY |
Response Handling
Common status codes.
| Code | Meaning |
|---|---|
| 202 | Accepted — Request queued |
| 400 | Bad Request |
| 401 | Unauthorized |
| 402 | Insufficient Balance |
| 403 | Forbidden |
| 429 | Too Many Requests |
| 500 | Internal Server Error |
Error Responses
Queue system errors and model validation errors.
Queue System Errors
// 402 — Insufficient balance
{
"error": "Insufficient Balance",
"message": "Your wallet does not have enough balance."
}
// 400 — Model not found
{
"error": "Model not found",
"message": "Model 'media-speed' not found or is disabled"
}
Error via Status/Webhook
{
"request_id": "media-speed_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
"status": "ERROR",
"model_id": "media-speed",
"error": "Description of the error",
"output": null
}
Retrieving Results
Poll the universal status endpoint to check progress and retrieve results.
Endpoint
GET https://gateway.pixazo.ai/v2/requests/status/{request_id}
Ocp-Apim-Subscription-Key: YOUR_API_KEY
cURL Example
curl -H "Ocp-Apim-Subscription-Key: YOUR_API_KEY" \
"https://gateway.pixazo.ai/v2/requests/status/media-speed_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
Response (Completed)
{
"request_id": "media-speed_019dxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
"status": "COMPLETED",
"model_id": "media-speed",
"error": null,
"output": {
"media_url": [
"https://pub-582b7213209642b9b995c96c95a30381.r2.dev/v1/media-speed_019dxxxx/output.mp4"
],
"media_type": "video/mp4"
},
"created_at": "2026-03-31T10:00:00.000Z",
"updated_at": "2026-03-31T10:00:15.000Z",
"completed_at": "2026-03-31T10:00:15.000Z"
}
Response Fields
| Field | Type | Description |
|---|---|---|
| request_id | string | Unique request identifier |
| status | string | QUEUED, PROCESSING, COMPLETED, FAILED, or ERROR |
| model_id | string | Model that processed the request |
| error | string|null | Error message if failed |
| output.media_url | array | URLs to generated media (R2 CDN) |
| output.media_type | string | MIME type of the output |
| created_at | string | When request was created |
| completed_at | string | When request completed |
| polling_url | string | Status URL (initial response only) |
Status Values
| Status | Description |
|---|---|
| QUEUED | Request accepted, waiting to be processed |
| PROCESSING | Being processed by the model |
| COMPLETED | Done — output contains the result |
| FAILED | Failed — check error field |
| ERROR | System error — not charged |
Status Flow
QUEUED → PROCESSING → COMPLETED
→ FAILED
→ ERROR
Typical Workflow
- Send a generate request to the API endpoint
- Save the
request_idfrom the response - Poll every 5-10 seconds:
GET /v2/requests/status/{request_id} - When
statusis"COMPLETED", download fromoutput.media_url
Tip: Use X-Webhook-URL header to get a callback instead of polling.
Video Speed 1.0 API Pricing
⚡ Performance
Live usage measured on Pixazo's gateway, split by model version. Generation time is how long a generation takes end-to-end (lower is better). Success rate is the percent of generations that complete (higher is better).
〰 Uptime
Percent of generations that succeeded over the selected period, per model version.