20c5960320
extract_audio.py primeste --skip N, ca transele urmatoare sa nu reia lectiile deja luate: slice + enumerate de la skip+1, numerotarea fisierelor ramane cea globala. Audio-ul (862 MB) sters dupa verificare fisier cu fisier - fiecare mp3 avea transcriere completa, iar singurul fara era duplicatul confirmat _duplicate/02_08092026 (fingerprint 1.000 fata de 01_10092026). PROGRESS.md: sectiune noua 0bis cu ce ruleaza acum. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MtSTyTmt6AbCL9j5ajEDm1
118 lines
4.1 KiB
Python
118 lines
4.1 KiB
Python
"""
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Extract audio-only tracks for the core-curriculum lectures of the ATM course.
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No video ever touches disk: ffmpeg reads the CloudFront MP4 URL directly over
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HTTP and writes only the audio track (mono, 16kHz -> what whisper wants
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anyway) to disk. Manifest-free; resumable by checking file existence.
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"""
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import argparse
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import logging
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import os
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import subprocess
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import sys
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from pathlib import Path
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import requests
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from dotenv import load_dotenv
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from download import login, get_course_id, get_menu, get_lecture_video_url, slugify
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# First-phase scope: core curriculum only, not the 147 "ANALIZĂ ZILNICĂ"
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# recaps / Q&A / live-room recordings (confirmed with user 2026-09-11).
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CORE_MODULES = {
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"MODUL 1", "MODUL 2", "MODUL 3", "MODUL 4", "MODUL 5", "MODUL 6",
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"CATALIZATORI", "ANALIZĂ FUNDAMENTALĂ",
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"MASTER ATM 1", "MASTER ATM 2", "MASTER ATM 3", "MASTER ATM 4",
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}
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logging.basicConfig(level=logging.INFO, format="%(asctime)s [%(levelname)s] %(message)s")
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log = logging.getLogger(__name__)
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def extract_audio(url: str, dest: Path) -> bool:
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dest.parent.mkdir(parents=True, exist_ok=True)
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tmp = dest.with_suffix(dest.suffix + ".tmp")
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cmd = [
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"ffmpeg", "-y", "-i", url,
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"-vn", "-acodec", "libmp3lame", "-ar", "16000", "-ac", "1", "-b:a", "64k",
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"-f", "mp3", str(tmp),
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]
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result = subprocess.run(cmd, capture_output=True, text=True, timeout=3600)
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if result.returncode != 0 or not tmp.exists():
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log.error(f" ffmpeg failed: {result.stderr[-1500:]}")
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return False
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tmp.rename(dest)
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return True
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def main():
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p = argparse.ArgumentParser(description="Extract audio for ATM core-curriculum lectures")
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p.add_argument("--out", default="audio", help="Output directory")
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p.add_argument("--only", default=None, help="Limit to one module name (bypasses CORE_MODULES)")
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p.add_argument("--lectures", type=int, default=None, help="With --only: stop after lecture N of that module")
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p.add_argument("--skip", type=int, default=0, help="Skip the first N lectures (transa urmatoare)")
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args = p.parse_args()
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load_dotenv()
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email = os.getenv("ATM_EMAIL", "")
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password = os.getenv("ATM_PASSWORD", "")
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if not email or not password:
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log.error("Set ATM_EMAIL and ATM_PASSWORD in .env")
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sys.exit(1)
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out_dir = Path(args.out)
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session = requests.Session()
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session.headers.update({"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64)"})
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log.info("Logging in...")
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login(session, email, password)
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course_id = get_course_id(session)
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modules = get_menu(session, course_id)
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done = skipped = failed = 0
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for mod_idx, mod in enumerate(modules, 1):
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if args.only:
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if mod["name"] != args.only:
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continue
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elif mod["name"] not in CORE_MODULES:
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continue
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mod_dir = out_dir / f"{mod_idx:02d}_{slugify(mod['name'])}"
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log.info(f"Module: {mod['name']} ({len(mod['lectures'])} lectures)")
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lectures = mod["lectures"][args.skip : args.lectures]
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for lec_idx, lec in enumerate(lectures, args.skip + 1):
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stem = f"{lec_idx:02d}_{slugify(lec['name'])}"
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dest = mod_dir / f"{stem}.mp3"
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if dest.exists() and dest.stat().st_size > 10_000:
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log.info(f" Skipping (exists): {dest.name}")
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skipped += 1
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continue
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try:
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video_url = get_lecture_video_url(session, lec["id"])
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except requests.exceptions.HTTPError as e:
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if e.response is not None and e.response.status_code == 403:
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log.info(f" Skipping (not included in access): {lec['name']}")
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continue
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raise
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if not video_url:
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log.info(f" No video (text/quiz): {lec['name']}")
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continue
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log.info(f" Extracting: {lec['name']}")
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if extract_audio(video_url, dest):
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done += 1
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else:
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failed += 1
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log.info("=" * 60)
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log.info(f"Extracted {done}, skipped {skipped}, failed {failed}.")
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if failed:
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sys.exit(1)
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if __name__ == "__main__":
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main()
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