lofi-app/src/modules/stream_extractor.py
2026-05-10 16:02:58 +00:00

85 lines
2.8 KiB
Python

import logging
import yt_dlp
logger = logging.getLogger(__name__)
def extract_audio_stream(video_id: str) -> dict | None:
"""Extract playable audio stream URL from a YouTube video using yt-dlp."""
url = f"https://www.youtube.com/watch?v={video_id}"
ydl_opts = {
"format": "bestaudio/best",
"quiet": True,
"no_warnings": True,
"extract_flat": False,
"user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
}
try:
with yt_dlp.YoutubeDL(ydl_opts) as ydl:
info = ydl.extract_info(url, download=False)
if not info:
logger.error("No info extracted for video %s", video_id)
return None
formats = info.get("formats", [])
if not formats:
logger.error("No formats available for video %s", video_id)
return None
audio_url = None
stream_type = None
for fmt in formats:
protocol = fmt.get("protocol", "")
has_audio = fmt.get("acodec", "none") != "none"
if not has_audio:
continue
if protocol.startswith("m3u8"):
audio_url = fmt.get("url")
stream_type = "hls"
break
if not audio_url:
for fmt in formats:
protocol = fmt.get("protocol", "")
fmt_note = fmt.get("format_note", "")
has_audio = fmt.get("acodec", "none") != "none"
if not has_audio:
continue
if protocol.startswith("https") and "audio" in fmt_note.lower():
audio_url = fmt.get("url")
stream_type = "direct"
break
elif protocol.startswith("https") and has_audio:
audio_url = fmt.get("url")
stream_type = "direct"
if not audio_url:
logger.error("No audio stream found for video %s", video_id)
return None
return {
"videoId": video_id,
"url": audio_url,
"streamType": stream_type,
"title": info.get("title", "Unknown"),
"channel": info.get("channel", "Unknown"),
"duration": info.get("duration"),
"isLive": info.get("live_status") == "live",
}
except yt_dlp.utils.DownloadError as e:
logger.error("yt-dlp error for video %s: %s", video_id, e)
return None
except Exception as e:
logger.error("Unexpected error for video %s: %s", video_id, e)
return None