# YouTube 视频文稿 API (youtube.transcript)

- Canonical page: https://everyinfra.com/youtube-api/transcript
- Endpoint: POST https://api.everyinfra.com/api/v1/social with {"platform": "youtube", "action": "transcript", "params": {...}}
- Price: $0.000556 per call ($0.56 per 1,000 requests); failed calls and empty results are not charged
- Returns: single object
- Mode: sync; add "mode": "async" for slow tasks

## Health

- Live health (24h percent, hourly and daily trends): https://api.everyinfra.com/api/v1/social/availability?platform=youtube&action=transcript

## Parameters

| name | type | required | default | description |
|---|---|---|---|---|
| url | not declared | yes | not declared | 具体 YouTube 视频 URL，用于提取该视频字幕或文稿；不是频道批量视频查询。 |
| language | not declared | no | not declared | transcript 请求的字幕/文稿语言代码，按可用语言获取，不保证自动翻译。 |

## Response fields (items in `results`)

| field | meaning |
|---|---|
| id | 该记录在原平台上的唯一标识。仅在同一平台内唯一，跨平台可能重复。 |
| url | 该记录在原平台上的可访问链接。 |
| title | 标题。平台无标题概念时（如纯文本帖）为 null。 |
| text | 正文内容，已去除 HTML 标签，全文返回、不截断（个别平台的列表结果本身只有摘要，以该平台的字段说明为准）。 |
| segments | 字幕分段（带时间戳文本）。 |
| language | 内容语言代码（如 zh、en），由平台判定，可能不准。 |
| available_languages | 可用字幕语言列表。 |
| channel_id | 频道 ID（UC 开头）。 |
| channel_name | 频道名。 |
| channel_username | 频道 @handle。 |
| view_count | 浏览/播放数。null 表示不公开，不等于 0。 |
| like_count | 点赞数。null 表示该平台或该接口不公开此数据，不等于 0。 |
| comment_count | 评论数。null 表示不公开，不等于 0。 |
| posted_at | 发布时间，ISO 8601 格式、UTC 时区（如 2026-08-07T12:34:56+00:00）。平台只给非标准字符串时原样透传，解析前建议做容错。null 表示平台未公开。 |
| platform | 数据来源平台标识，与请求里的 platform 一致（如 xiaohongshu、tiktok）。 |

## Example

```bash
curl -X POST 'https://api.everyinfra.com/api/v1/social' \
  -H "Authorization: Bearer $EVERYINFRA_API_KEY" \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "platform": "youtube",
  "action": "transcript",
  "params": {
    "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ"
  }
}'
```

```python
import os
import requests

response = requests.post(
    "https://api.everyinfra.com/api/v1/social",
    headers={"Authorization": f"Bearer {os.environ['EVERYINFRA_API_KEY']}"},
    json={
        "platform": "youtube",
        "action": "transcript",
        "params": {
            "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
        },
    },
    timeout=120,
)
print(response.status_code)
print(response.json())
```

## Response example

Real response to the example request above, captured 2026-09-26T08:56:04Z. `results` and `count` are real with personal information (names, handles, avatars, profile links, contact details) removed. `id`, `billing` and `quota` differ on every call, so only their shape is shown.

```text
{
  "id": "req_…",
  "platform": "youtube",
  "action": "transcript",
  "results": {
    "id": "dQw4w9WgXcQ",
    "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
    "title": "Rick Astley - Never Gonna Give You Up (Official Video) (4K Remaster)",
    "text": "[♪♪♪] ♪ We're no strangers to love ♪ ♪ You know the rules\nand so do I ♪ ♪ A full commitment's\nwhat I'm thinking of ♪ ♪ You wouldn't get this\nfrom any other guy ♪ ♪ I just wanna tell you\nhow I'm feeling ♪ ♪ Gotta make you understand ♪ ♪ Never gonna give you up ♪ ♪ Never gonna let …",
    "language": "en",
    "available_languages": [
      "English",
      "German (Germany)",
      "Japanese"
    ],
    "channel_id": "UCuAXFkgsw1L7xaCfnd5JJOw",
    "channel_name": "Rick Astley",
    "channel_username": "•••",
    "view_count": 1820151607,
    "like_count": 19421468,
    "comment_count": 2457642,
    "posted_at": "2009-10-25T06:57:33+00:00",
    "platform": "youtube"
  },
  "billing": {
    "charged": …,
    "charged_usd": …,
    "balance_after_usd": …,
    …
  },
  "quota": { … }
}
```

## Also

- Capability catalog (no key): https://api.everyinfra.com/api/v1/social/catalog?platform=youtube
- OpenAPI: https://everyinfra.com/openapi.json · Agents guide: https://everyinfra.com/agents.md