Files
web-page-backend/music-lab/app/pipeline/video.py
gahusb 240bd38541 feat(music-lab): 영상 인코딩을 Windows GPU 서버로 오프로드
- pipeline/video.py 재작성: subprocess.run 제거, httpx로 Windows /encode_video 호출
- Windows 서버 다운 시 즉시 VideoGenerationError (NAS 로컬 폴백 X — 의도적 결정)
- /app/data/* → /volume1/docker/webpage/data/* 경로 변환 (_container_to_nas)
- 테스트는 respx mock 기반으로 교체 (6개)
2026-05-09 02:01:34 +09:00

95 lines
3.5 KiB
Python

"""영상 비주얼 생성 — Windows GPU 서버 (NVENC) 호출.
Windows 서버 다운/실패 시 즉시 예외 (NAS 로컬 폴백 없음 — 의도적 결정).
"""
import os
import logging
import httpx
from . import storage
logger = logging.getLogger("music-lab.video")
ENCODER_URL = os.getenv("WINDOWS_VIDEO_ENCODER_URL", "")
ENCODER_TIMEOUT_S = 200 # Windows 서버 ffmpeg 180s + 마진
# NAS 호스트 절대경로 prefix — docker bind mount의 host 측
NAS_VIDEOS_ROOT = os.getenv("NAS_VIDEOS_ROOT", "/volume1/docker/webpage/data/videos")
NAS_MUSIC_ROOT = os.getenv("NAS_MUSIC_ROOT", "/volume1/docker/webpage/data/music")
class VideoGenerationError(Exception):
pass
def generate(*, pipeline_id: int, audio_path: str, cover_path: str,
genre: str, duration_sec: int, resolution: str = "1920x1080",
style: str = "visualizer") -> dict:
"""원격 Windows GPU 서버 호출. 다운/실패 시 즉시 예외."""
if not ENCODER_URL:
raise VideoGenerationError(
"WINDOWS_VIDEO_ENCODER_URL 미설정 — Windows 인코더 서버 주소 필요"
)
out_path = os.path.join(storage.pipeline_dir(pipeline_id), "video.mp4")
nas_audio = _container_to_nas(audio_path)
nas_cover = _container_to_nas(cover_path)
nas_output = _container_to_nas(out_path)
payload = {
"cover_path_nas": nas_cover,
"audio_path_nas": nas_audio,
"output_path_nas": nas_output,
"resolution": resolution,
"duration_sec": duration_sec,
"style": style,
}
logger.info("Windows 인코더 호출: pipeline=%d audio=%s", pipeline_id, audio_path)
try:
with httpx.Client(timeout=ENCODER_TIMEOUT_S) as client:
resp = client.post(f"{ENCODER_URL}/encode_video", json=payload)
except (httpx.ConnectError, httpx.ReadTimeout, httpx.WriteTimeout, httpx.NetworkError) as e:
raise VideoGenerationError(f"Windows 인코더 연결 실패: {e}")
if resp.status_code != 200:
try:
body = resp.json()
# FastAPI HTTPException wraps in {"detail": ...}
detail = body.get("detail", body) if isinstance(body, dict) else body
except Exception:
detail = {"error": resp.text[:300]}
if isinstance(detail, dict):
stage = detail.get("stage", "?")
error = detail.get("error", str(detail))
else:
stage = "?"
error = str(detail)
raise VideoGenerationError(
f"Windows 인코더 오류 ({resp.status_code}): {stage}{error}"
)
data = resp.json()
if not data.get("ok"):
raise VideoGenerationError(f"Windows 인코더 응답 ok=false: {data}")
return {
"url": storage.media_url(pipeline_id, "video.mp4"),
"used_fallback": False,
"duration_sec": duration_sec,
"encode_duration_ms": data.get("duration_ms"),
"encoder": data.get("encoder", "h264_nvenc"),
}
def _container_to_nas(container_path: str) -> str:
""" /app/data/videos/3/cover.jpg → /volume1/docker/webpage/data/videos/3/cover.jpg
/app/data/abc.mp3 → /volume1/docker/webpage/data/music/abc.mp3
"""
if container_path.startswith("/app/data/videos/"):
return container_path.replace("/app/data/videos/", NAS_VIDEOS_ROOT + "/", 1)
if container_path.startswith("/app/data/"):
rel = container_path[len("/app/data/"):]
return NAS_MUSIC_ROOT + "/" + rel
return container_path