Files
Agent-Reach/agent_reach/channels/youtube.py
T
ming 4ca570a39f feat(transcribe): Whisper transcription module with Groq→OpenAI fallback (#277)
Adds agent_reach/transcribe.py (download → compress → chunk → transcribe with provider fallback, fully mocked tests). Maintainer follow-up on the branch: wired an agent-reach transcribe CLI subcommand + skill docs so agents can actually invoke it, added the missing configure openai-key branch the error hint referenced, removed two dead static methods. 103 tests pass; wheel-gate clean.
2026-06-10 15:03:37 +08:00

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# -*- coding: utf-8 -*-
"""YouTube — check if yt-dlp is available with JS runtime."""
import shutil
from agent_reach.utils.paths import get_ytdlp_config_path, render_ytdlp_fix_command
from agent_reach.utils.text import read_utf8_text
from .base import Channel
class YouTubeChannel(Channel):
name = "youtube"
description = "YouTube 视频和字幕"
backends = ["yt-dlp"]
tier = 0
def can_handle(self, url: str) -> bool:
from urllib.parse import urlparse
d = urlparse(url).netloc.lower()
return "youtube.com" in d or "youtu.be" in d
def check(self, config=None):
if not shutil.which("yt-dlp"):
return "off", "yt-dlp 未安装。安装:pip install yt-dlp"
# Check JS runtime
has_js = shutil.which("deno") or shutil.which("node")
if not has_js:
return "warn", (
"yt-dlp 已安装但缺少 JS runtimeYouTube 必须)。\n"
" 安装 Node.js 或 deno,然后运行:agent-reach install"
)
# Check yt-dlp config for --js-runtimes
# Deno works out of the box; Node.js requires explicit config
has_deno = shutil.which("deno")
if not has_deno:
ytdlp_config = get_ytdlp_config_path()
has_js_config = False
if ytdlp_config.exists():
has_js_config = "--js-runtimes" in read_utf8_text(ytdlp_config)
if not has_js_config:
return "warn", (
f"yt-dlp 已安装但未配置 JS runtime。运行:\n {render_ytdlp_fix_command()}"
)
# Surface transcription readiness so `doctor` reports it.
msg = "可提取视频信息和字幕"
if config is not None:
providers = []
if config.is_configured("groq_whisper"):
providers.append("groq")
if config.is_configured("openai_whisper"):
providers.append("openai")
if providers:
if not shutil.which("ffmpeg"):
msg += "(音频转写需安装 ffmpeg"
else:
msg += f",可转写音频({''.join(providers)}"
return "ok", msg
def transcribe(self, url: str, *, provider: str = "auto", config=None) -> str:
"""Download a YouTube video's audio and return its transcript.
Delegates to :func:`agent_reach.transcribe.transcribe`. Imported lazily
so the channel module stays cheap to import for users who never
transcribe.
"""
from agent_reach.transcribe import transcribe as _transcribe
return _transcribe(url, provider=provider, config=config)