banyaro/backend/media_utils.py
rene 5141ba9969 Session 2026-04-20: Medien-Konvertierung, Umami Analytics, Username/Privacy
- HEIC→JPEG, MOV/AVI→MP4 Konvertierung bei allen Upload-Endpoints (media_utils.py)
- ffmpeg im Docker-Image, Video-Thumbnails (extract_video_thumb, poster-Attribut)
- Google Analytics entfernt, Umami self-hosted eingebunden (index.html, datenschutz.js)
- Admin-Panel Analytics-Tab: Stat-Cards, Sparkline 7 Tage, Top-Seiten (Umami-API-Proxy)
- Admin-Panel Tab-Icons korrigiert (aus vorhandenem Phosphor-Sprite)
- users.real_name Spalte: Username öffentlich, echter Name privat und optional
- Registrierung: Label "Benutzername", Leerzeichen verboten, Profanity-Blockliste
- Datenschutzerklärung: GA-Abschnitt durch Umami-Text ersetzt
2026-04-20 18:36:58 +02:00

99 lines
3.4 KiB
Python

import io
import os
import subprocess
import tempfile
from typing import Tuple
_HEIC_EXTS = {".heic", ".heif"}
_VIDEO_EXTS = {".mov", ".avi", ".m4v"}
def to_jpeg_if_heic(data: bytes, filename: str) -> Tuple[bytes, str]:
"""Convert HEIC/HEIF to JPEG; return (data, ext) unchanged for all other types."""
ext = os.path.splitext(filename or "")[1].lower()
if ext not in _HEIC_EXTS:
return data, ext or ".jpg"
try:
import pillow_heif
pillow_heif.register_heif_opener()
from PIL import Image, ImageOps
img = Image.open(io.BytesIO(data))
img = ImageOps.exif_transpose(img)
img = img.convert("RGB")
buf = io.BytesIO()
img.save(buf, format="JPEG", quality=90)
return buf.getvalue(), ".jpg"
except Exception:
return data, ext
def to_mp4_if_needed(data: bytes, filename: str) -> Tuple[bytes, str]:
"""Convert MOV/AVI/M4V to H.264 MP4; return unchanged for MP4/WebM."""
ext = os.path.splitext(filename or "")[1].lower()
if ext not in _VIDEO_EXTS:
return data, ext or ".mp4"
src_path = dst_path = None
try:
with tempfile.NamedTemporaryFile(suffix=ext, delete=False) as src:
src.write(data)
src_path = src.name
dst_path = src_path[: -len(ext)] + ".mp4"
result = subprocess.run(
["ffmpeg", "-i", src_path,
"-c:v", "libx264", "-preset", "fast", "-crf", "23",
"-c:a", "aac",
"-movflags", "+faststart",
"-y", dst_path],
capture_output=True, timeout=300,
)
if result.returncode == 0:
with open(dst_path, "rb") as f:
return f.read(), ".mp4"
return data, ext
except Exception:
return data, ext
finally:
for p in [src_path, dst_path]:
if p:
try:
os.unlink(p)
except OSError:
pass
def convert_media(data: bytes, filename: str) -> Tuple[bytes, str]:
"""Convert HEIC→JPEG and MOV/AVI/M4V→MP4; pass everything else through."""
ext = os.path.splitext(filename or "")[1].lower()
if ext in _HEIC_EXTS:
return to_jpeg_if_heic(data, filename)
if ext in _VIDEO_EXTS:
return to_mp4_if_needed(data, filename)
return data, ext or ".bin"
def extract_video_thumb(video_path: str) -> str | None:
"""Extract a frame at ~1s from video_path and save as <basename>_thumb.jpg.
Returns the thumb path on success, None on failure."""
base, _ = os.path.splitext(video_path)
thumb_path = base + "_thumb.jpg"
try:
result = subprocess.run(
["ffmpeg", "-i", video_path,
"-ss", "1", "-vframes", "1",
"-q:v", "3", "-vf", "scale=480:-1",
"-y", thumb_path],
capture_output=True, timeout=30,
)
if result.returncode == 0 and os.path.exists(thumb_path):
return thumb_path
# Fallback: first frame (for videos shorter than 1s)
result2 = subprocess.run(
["ffmpeg", "-i", video_path,
"-vframes", "1",
"-q:v", "3", "-vf", "scale=480:-1",
"-y", thumb_path],
capture_output=True, timeout=30,
)
return thumb_path if result2.returncode == 0 and os.path.exists(thumb_path) else None
except Exception:
return None