# YouTube Signed Video Stream URL API

> Returns a signed playback stream URL for a specific YouTube video format. Requires a format itag identifier alongside either a video ID or full video link.

Source: https://www.sandbase.ai/model/youtube/web-v2/signed-stream-url
API reference: https://www.sandbase.ai/model/youtube/web-v2/signed-stream-url/docs

## Facts

- Provider: YouTube
- Type: Data API
- Endpoint: `POST https://api.sandbase.ai/v1/api/youtube/web-v2/signed-stream-url`
- Price: $0.0015 per call
- Free allowance: 100 calls per organization per UTC day, shared across eligible APIs
- Capabilities: api, youtube
- Billing: pay per use from one SandBase balance; no provider account or subscription needed

## Call it

`POST https://api.sandbase.ai/v1/api/youtube/web-v2/signed-stream-url` with `Authorization: Bearer $SANDBASE_API_KEY` and the parameters as a JSON body.

| Parameter | Type | Required | Allowed values |
| --- | --- | --- | --- |
| `itag` | integer | yes |  |
| `video_id` | string | no |  |
| `video_url` | string | no |  |

## FAQ

### How do I use the YouTube Signed Video Stream URL API?

Send a POST request to https://api.sandbase.ai/v1/api/youtube/web-v2/signed-stream-url with your SandBase API key in the Authorization header (Bearer) and the parameters as a JSON body. You can also try it in the Playground on this page without writing code.

### How much does the YouTube Signed Video Stream URL API cost?

$0.0015 per call. Every organization gets 100 free calls per UTC day, shared across eligible SandBase APIs including this one; after that each call is billed at this price from your SandBase balance. There is no subscription.

### What parameters does the YouTube Signed Video Stream URL API accept?

Required: itag (integer). Optional: video_id (string) and video_url (string). The Parameters table and the Playground on this page list every field.

### What does the YouTube Signed Video Stream URL API return?

A JSON response returned in the same HTTP request (synchronous).

### Do I need a YouTube developer account or API key?

No. YouTube Signed Video Stream URL runs through SandBase, so one SandBase API key covers this endpoint and every other API and model in the catalog. You do not need to apply for YouTube API access separately.

## README

### YouTube Signed Video Stream URL API

Returns a signed playback stream URL ready for playback using a format `itag` and either a `video_id` or `video_url`.

#### Use cases

- Stream a selected YouTube video format in a media player.
- Obtain direct playback links based on a specific format itag.
- Access playable video streams using either a video ID or full URL.

#### Request

```bash
curl -X POST "https://api.sandbase.ai/v1/api/youtube/web-v2/signed-stream-url" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"itag": 18}'
```

#### Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `itag` | integer | Yes | Format identifier, selected from formats list returned by get_video_streams |
| `video_id` | string | No | Video ID (recommended) |
| `video_url` | string | No | Full video URL (optional) |

#### Notes

- The `itag` value must come from the formats list returned by the video streams endpoint.
- Supply either `video_id` (recommended) or `video_url` to specify the target video.

#### Related APIs

- [YouTube Channel Community Posts](/model/youtube/web-v2/channel-community-posts): Returns community posts from a specific YouTube channel, including text content, polls, votes, and comment counts.
- [YouTube Channel Description](/model/youtube/web-v2/channel-description): Returns YouTube channel details including subscriber counts, video totals, view counts, joined date, and social links.
- [YouTube Channel ID from URL](/model/youtube/web-v2/channel-id): Resolves a YouTube channel URL to its canonical channel ID.