| name | video-to-text-bcut |
| description | Transcribe video/audio URL to text + word-level timestamps using Bilibili Bcut ASR API (free, no API key). Preferred for Chinese content — Bcut gives character-level timestamps vs Whisper word-level. Returns text + segments [{start, end, text}]. Requires yt-dlp + ffmpeg. |
| version | 0.1.0 |
| layer | leaf |
| domains | ["video-audio","transcription","chinese"] |
| scenarios | ["video-to-text","bilibili-transcription","chinese-subtitle"] |
| trigger_keywords | ["转文字","字幕","转录","bcut","必剪","bilibili transcribe","中文转录"] |
| model_tier | Fast |
| auth_required | false |
| cost | free |
Uses Bilibili's public Bcut ASR API (no login required):
- yt-dlp extracts audio from video URL
- ffmpeg converts to 16kHz mono WAV
- Bcut API: upload → create task → poll → get word-level timestamps
- SegmentBuilder aggregates chars into sentence-level segments
Output
{
"ok": true,
"text": "完整转录文本",
"segments": [{"start": 0.0, "end": 2.5, "text": "第一句话。"}],
"duration_seconds": 120.5,
"source": "https://..."
}
Quality Bar
- Returns segments with
start/end in seconds
- Handles Bcut polling timeout gracefully (returns partial text)
- Falls back gracefully if Bcut fails
