610 lines
22 KiB
Python
610 lines
22 KiB
Python
import os
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import subprocess
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from datetime import datetime
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from pathlib import Path
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from zoneinfo import ZoneInfo
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from flask import Flask, abort, jsonify, render_template_string, request, send_from_directory, url_for
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# ---------------------------------------------------------------------------
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# Configuration
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# ---------------------------------------------------------------------------
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RECORDINGS_DIR = Path(os.environ.get("RECORDINGS_DIR", "/recordings"))
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FINISHED_DIR = Path(os.environ.get("FINISHED_DIR", "/finished"))
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WAVEFORMS_DIR = Path(os.environ.get("WAVEFORMS_DIR", "/waveforms"))
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WEB_PORT = int(os.environ.get("WEB_PORT", "8080"))
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# ---------------------------------------------------------------------------
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# Application
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# ---------------------------------------------------------------------------
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app = Flask(__name__)
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# ---------------------------------------------------------------------------
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# Helpers
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# ---------------------------------------------------------------------------
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def format_datetime(timestamp):
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return datetime.fromtimestamp(timestamp, ZoneInfo("Europe/Berlin")).strftime(
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"%d.%m.%Y %H:%M:%S"
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)
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def format_size(size):
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if size < 1024:
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return f"{size} B"
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if size < 1024 ** 2:
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return f"{size / 1024:.1f} KB"
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if size < 1024 ** 3:
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return f"{size / 1024 ** 2:.1f} MB"
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return f"{size / 1024 ** 3:.2f} GB"
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def format_duration(seconds):
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if seconds is None:
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return "–"
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seconds = int(seconds)
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hours = seconds // 3600
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minutes = (seconds % 3600) // 60
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seconds = seconds % 60
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if hours:
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return f"{hours}:{minutes:02d}:{seconds:02d}"
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return f"{minutes}:{seconds:02d}"
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def safe_filename(filename):
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if not filename or Path(filename).name != filename:
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return None
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if not filename.lower().endswith(".mp3"):
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return None
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return filename
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def source_path(filename):
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filename = safe_filename(filename)
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if filename is None:
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return None
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path = RECORDINGS_DIR / filename
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return path if path.is_file() else None
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def finished_path(filename):
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filename = safe_filename(filename)
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if filename is None:
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return None
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return FINISHED_DIR / filename
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def get_duration(path):
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try:
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result = subprocess.run(
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[
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"ffprobe", "-v", "error",
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"-show_entries", "format=duration",
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"-of", "default=noprint_wrappers=1:nokey=1",
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str(path),
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],
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capture_output=True, text=True, timeout=10,
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)
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if result.returncode != 0:
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return None
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return float(result.stdout.strip())
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except (OSError, ValueError, subprocess.SubprocessError):
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return None
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def waveform_path(filename):
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return WAVEFORMS_DIR / f"{filename}.png"
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def create_waveform(filename):
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source = source_path(filename)
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if source is None:
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return None
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output = waveform_path(filename)
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WAVEFORMS_DIR.mkdir(parents=True, exist_ok=True)
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try:
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if output.is_file() and output.stat().st_mtime >= source.stat().st_mtime:
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return output
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except FileNotFoundError:
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pass
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temp = output.with_suffix(".tmp.png")
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try:
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result = subprocess.run(
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[
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"ffmpeg", "-hide_banner", "-loglevel", "error", "-y",
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"-i", str(source),
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"-filter_complex",
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"aformat=channel_layouts=mono,showwavespic=s=2400x240:split_channels=0",
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"-frames:v", "1",
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str(temp),
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],
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capture_output=True, text=True, timeout=120,
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)
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if result.returncode != 0 or not temp.is_file():
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print(f"[waveform] failed for {filename}: {result.stderr.strip()}", flush=True)
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return None
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temp.replace(output)
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return output
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except Exception as exc:
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print(f"[waveform] failed for {filename}: {exc}", flush=True)
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try:
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temp.unlink(missing_ok=True)
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except OSError:
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pass
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return None
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def create_finished(filename, start, end):
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source = source_path(filename)
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if source is None:
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raise ValueError("Aufnahme nicht gefunden")
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try:
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start = float(start)
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end = float(end)
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except (TypeError, ValueError):
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raise ValueError("Ungültige Zeitangabe")
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duration = get_duration(source)
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if duration is None:
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raise ValueError("Aufnahmedauer konnte nicht ermittelt werden")
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if start < 0 or end > duration or end <= start:
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raise ValueError("Ungültiger Auswahlbereich")
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if end - start < 0.5:
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raise ValueError("Der ausgewählte Bereich ist zu kurz")
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FINISHED_DIR.mkdir(parents=True, exist_ok=True)
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destination = finished_path(filename)
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temp = FINISHED_DIR / f".{filename}.tmp.mp3"
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result = subprocess.run(
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[
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"ffmpeg", "-hide_banner", "-loglevel", "warning", "-y",
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"-i", str(source),
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"-ss", f"{start:.3f}",
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"-t", f"{end - start:.3f}",
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"-af", "loudnorm=I=-16:TP=-1.5:LRA=11",
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"-c:a", "libmp3lame",
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"-b:a", "128k",
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str(temp),
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],
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capture_output=True, text=True, timeout=1800,
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)
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if result.returncode != 0 or not temp.is_file():
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try:
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temp.unlink(missing_ok=True)
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except OSError:
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pass
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print(f"[edit] ffmpeg failed for {filename}: {result.stderr.strip()}", flush=True)
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raise RuntimeError("Schneiden fehlgeschlagen")
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temp.replace(destination)
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return destination, get_duration(destination)
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# ---------------------------------------------------------------------------
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# HTML
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# ---------------------------------------------------------------------------
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EDITOR_HTML = """
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<!DOCTYPE html>
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<html lang="de">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Event Audio – Aufnahme bearbeiten</title>
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<style>
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* { box-sizing: border-box; }
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body { margin:0; padding:24px; background:#111; color:#eee; font-family:Arial,Helvetica,sans-serif; }
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.container { max-width:1400px; margin:0 auto; }
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h1 { margin:0 0 6px; font-size:28px; }
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.subtitle { color:#aaa; margin-bottom:22px; }
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.editor { background:#181818; border:1px solid #333; border-radius:10px; padding:20px; }
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.wave-wrap { position:relative; width:100%; height:240px; background:#0b0b0b; border-radius:6px; overflow:hidden; user-select:none; touch-action:none; }
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.wave-wrap img { width:100%; height:100%; object-fit:fill; display:block; opacity:.9; }
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.selection { position:absolute; top:0; bottom:0; background:rgba(80,150,255,.16); border-left:2px solid #fff; border-right:2px solid #fff; pointer-events:none; }
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.playhead { position:absolute; top:0; bottom:0; width:2px; margin-left:-1px; background:#ffcc33; box-shadow:0 0 5px #000; z-index:4; pointer-events:none; }
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.handle { position:absolute; top:0; bottom:0; width:18px; margin-left:-9px; cursor:ew-resize; z-index:3; touch-action:none; }
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.handle::after { content:""; position:absolute; left:7px; top:0; bottom:0; width:4px; background:#fff; border-radius:2px; box-shadow:0 0 5px #000; }
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.time-row { display:flex; justify-content:space-between; margin-top:8px; color:#aaa; font-size:14px; }
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.controls { display:flex; flex-wrap:wrap; gap:8px; align-items:center; margin-top:18px; }
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button, a.button { border:0; border-radius:6px; padding:11px 16px; background:#333; color:#fff; cursor:pointer; text-decoration:none; font-size:15px; }
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button:hover, a.button:hover { background:#444; }
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button.primary { background:#1769aa; }
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button.danger { background:#8b0000; }
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button:disabled { opacity:.45; cursor:not-allowed; }
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.position { margin-left:auto; color:#ccc; font-variant-numeric:tabular-nums; }
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.values { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:20px; }
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.value { background:#222; border-radius:6px; padding:12px; }
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.value span { display:block; color:#999; font-size:13px; margin-bottom:5px; }
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.value strong { font-size:20px; font-variant-numeric:tabular-nums; }
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.actions { display:flex; gap:10px; flex-wrap:wrap; margin-top:20px; }
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.info { margin-top:16px; color:#999; font-size:14px; }
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.message { margin-top:15px; padding:10px 12px; border-radius:6px; display:none; }
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.message.ok { display:block; background:#173d24; color:#b8f5c9; }
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.message.error { display:block; background:#4a1b1b; color:#ffd0d0; }
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.back { display:inline-block; margin-bottom:18px; color:#bbb; text-decoration:none; }
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@media(max-width:700px) {
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body { padding:12px; }
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.editor { padding:12px; }
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.wave-wrap { height:180px; }
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.values { grid-template-columns:1fr; }
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.position { width:100%; margin-left:0; }
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button, a.button { flex:1 1 auto; }
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}
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</style>
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</head>
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<body>
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<div class="container">
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<a class="back" href="/">← Zurück zu den Aufnahmen</a>
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<h1>Aufnahme bearbeiten</h1>
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<div class="subtitle">{{ filename }} · Originaldauer {{ duration }}</div>
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<div class="editor">
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<div class="wave-wrap" id="wave">
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<img src="{{ waveform_url }}" alt="Wellenform">
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<div class="selection" id="selection"></div>
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<div class="playhead" id="playhead"></div>
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<div class="handle" id="startHandle" title="Anfang verschieben"></div>
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<div class="handle" id="endHandle" title="Ende verschieben"></div>
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</div>
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<div class="time-row">
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<span>00:00:00</span>
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<span>{{ duration }}</span>
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</div>
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<audio id="audio" controls preload="metadata" style="width:100%;margin-top:18px">
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<source src="{{ audio_url }}" type="audio/mpeg">
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</audio>
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<div class="controls">
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<button onclick="jump(-10)">⏮ 10 s</button>
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<button onclick="jump(-1)">⏪ 1 s</button>
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<button onclick="jump(1)">1 s ⏩</button>
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<button onclick="jump(10)">10 s ⏭</button>
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<button onclick="playSelection()">▶ Auswahl abspielen</button>
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<button onclick="playFromStart()">▶ Ab Auswahlstart</button>
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<button onclick="setStartAtCurrent()">⏱ Anfang = Position</button>
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<button onclick="setEndAtCurrent()">⏱ Ende = Position</button>
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<span class="position" id="position">00:00:00</span>
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</div>
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<div class="values">
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<div class="value"><span>Anfang</span><strong id="startValue">00:00:00</strong></div>
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<div class="value"><span>Ende</span><strong id="endValue">00:00:00</strong></div>
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<div class="value"><span>Neue Dauer</span><strong id="keepValue">00:00:00</strong></div>
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</div>
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<div class="actions">
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<button class="primary" id="trimButton" onclick="trim()">✂ Fertige Aufnahme erstellen</button>
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<a class="button" href="{{ audio_url }}" download>Original herunterladen</a>
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</div>
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<div class="info">Die Originalaufnahme bleibt unverändert. Aus dem gewählten Bereich wird eine fertige Aufnahme im separaten Ausgabeordner erstellt.</div>
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<div id="message" class="message"></div>
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</div>
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</div>
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<script>
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const duration = {{ duration_seconds|tojson }};
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const filename = {{ filename|tojson }};
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let start = 0;
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let end = duration;
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let dragging = null;
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const wave = document.getElementById('wave');
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const startHandle = document.getElementById('startHandle');
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const endHandle = document.getElementById('endHandle');
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const selection = document.getElementById('selection');
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const playhead = document.getElementById('playhead');
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const audio = document.getElementById('audio');
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function fmt(sec) {
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sec = Math.max(0, Math.round(sec));
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const h = Math.floor(sec / 3600);
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const m = Math.floor((sec % 3600) / 60);
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const s = sec % 60;
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return `${String(h).padStart(2,'0')}:${String(m).padStart(2,'0')}:${String(s).padStart(2,'0')}`;
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}
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function xToTime(clientX) {
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const r = wave.getBoundingClientRect();
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return Math.max(0, Math.min(duration, ((clientX-r.left)/r.width)*duration));
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}
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function render() {
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const a = (start/duration)*100;
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const b = (end/duration)*100;
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startHandle.style.left = a+'%';
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endHandle.style.left = b+'%';
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selection.style.left = a+'%';
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selection.style.width = (b-a)+'%';
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document.getElementById('startValue').textContent = fmt(start);
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document.getElementById('endValue').textContent = fmt(end);
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document.getElementById('keepValue').textContent = fmt(end-start);
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renderPlayhead();
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}
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function renderPlayhead() {
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const t = Math.max(0, Math.min(duration, audio.currentTime || 0));
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playhead.style.left = ((t/duration)*100)+'%';
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}
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function beginDrag(which, e) {
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e.preventDefault();
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dragging = which;
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document.body.style.cursor='ew-resize';
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}
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startHandle.addEventListener('pointerdown', e => beginDrag('start',e));
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endHandle.addEventListener('pointerdown', e => beginDrag('end',e));
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document.addEventListener('pointermove', e => {
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if (!dragging) return;
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const t = xToTime(e.clientX);
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if (dragging === 'start') start = Math.min(t, end-0.5);
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else end = Math.max(t, start+0.5);
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render();
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});
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document.addEventListener('pointerup', () => { dragging=null; document.body.style.cursor=''; });
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wave.addEventListener('pointerdown', e => {
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if (e.target === startHandle || e.target === endHandle) return;
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const t=xToTime(e.clientX);
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audio.currentTime = Math.max(0, Math.min(duration,t));
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});
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audio.addEventListener('timeupdate', () => {
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document.getElementById('position').textContent=fmt(audio.currentTime);
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renderPlayhead();
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if (audio.currentTime >= end && !audio.paused) audio.pause();
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});
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audio.addEventListener('seeking', renderPlayhead);
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function jump(sec) { audio.currentTime=Math.max(0,Math.min(duration,audio.currentTime+sec)); renderPlayhead(); }
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function playFromStart() { audio.currentTime=start; renderPlayhead(); audio.play(); }
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function playSelection() { audio.currentTime=start; renderPlayhead(); audio.play(); }
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function setStartAtCurrent() {
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const t = Math.max(0, Math.min(duration, audio.currentTime || 0));
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if (t >= end - 0.5) {
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msg('Der Anfang muss mindestens 0,5 s vor dem Ende liegen.', false);
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return;
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}
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start = t;
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render();
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}
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function setEndAtCurrent() {
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const t = Math.max(0, Math.min(duration, audio.currentTime || 0));
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if (t <= start + 0.5) {
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msg('Das Ende muss mindestens 0,5 s nach dem Anfang liegen.', false);
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return;
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}
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end = t;
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render();
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}
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function msg(text, ok) {
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const el=document.getElementById('message'); el.textContent=text; el.className='message '+(ok?'ok':'error');
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}
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async function trim() {
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if (end-start < 0.5) return msg('Der ausgewählte Bereich ist zu kurz.',false);
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if (!confirm(`Aufnahme auf ${fmt(start)} bis ${fmt(end)} kürzen?`)) return;
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const btn=document.getElementById('trimButton'); btn.disabled=true; audio.pause();
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msg('Aufnahme wird geschnitten …',true);
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try {
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const r=await fetch('/api/edit', {method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({filename,start,end})});
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const d=await r.json();
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if(!r.ok || !d.success) throw new Error(d.error || 'Fehler beim Schneiden');
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msg('Fertige Aufnahme erfolgreich erstellt.',true);
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setTimeout(()=>location.reload(),700);
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} catch(e) { msg(e.message,false); btn.disabled=false; }
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}
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render();
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</script>
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</body>
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</html>
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"""
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INDEX_HTML = """
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<!DOCTYPE html>
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<html lang="de">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
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<title>Event Audio – Editor</title>
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<style>
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* { box-sizing:border-box; }
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body { margin:0; padding:24px; background:#111; color:#eee; font-family:Arial,Helvetica,sans-serif; }
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.container { max-width:1400px; margin:0 auto; }
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h1 { margin:0 0 6px; }
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.subtitle { color:#aaa; margin-bottom:22px; }
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.section { background:#181818; border:1px solid #333; border-radius:10px; padding:18px; margin-bottom:18px; }
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table { width:100%; border-collapse:collapse; }
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th,td { padding:10px 8px; border-bottom:1px solid #333; text-align:left; }
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th { color:#aaa; font-weight:normal; }
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.button { display:inline-block; border:0; border-radius:6px; padding:9px 13px; background:#333; color:#fff; cursor:pointer; text-decoration:none; }
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.button:hover { background:#444; }
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.empty { color:#999; padding:15px 0; }
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.loading-overlay { position:fixed; inset:0; background:rgba(0,0,0,.78); display:none; align-items:center; justify-content:center; z-index:1000; }
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.loading-overlay.active { display:flex; }
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.spinner { width:54px; height:54px; border:5px solid #444; border-top-color:#fff; border-radius:50%; animation:spin .8s linear infinite; }
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@keyframes spin { to { transform:rotate(360deg); } }
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@media(max-width:800px) { body { padding:12px; } table,thead,tbody,tr,th,td { display:block; } thead { display:none; } tr { padding:10px 0; border-bottom:1px solid #333; } td { border:0; padding:5px 0; } }
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</style>
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</head>
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<body>
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<div class="loading-overlay" id="loadingOverlay"><div class="spinner" aria-label="Laden"></div></div>
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<div class="container">
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<h1>Event Audio – Editor</h1>
|
||
<div class="subtitle">Fertige Aufnahmen aus {{ recordings_dir }}</div>
|
||
|
||
<div class="section">
|
||
<h2>Aufnahmen bearbeiten</h2>
|
||
{% if recordings %}
|
||
<table>
|
||
<thead><tr><th>Aufnahme</th><th>Datum</th><th>Größe</th><th>Dauer</th><th></th></tr></thead>
|
||
<tbody>
|
||
{% for item in recordings %}
|
||
<tr>
|
||
<td>{{ item.filename }}</td>
|
||
<td>{{ item.datetime }}</td>
|
||
<td>{{ item.size }}</td>
|
||
<td>{{ item.duration }}</td>
|
||
<td><a class="button" href="{{ url_for('edit_recording', filename=item.filename) }}" onclick="showLoading()">✂ Bearbeiten</a></td>
|
||
</tr>
|
||
{% endfor %}
|
||
</tbody>
|
||
</table>
|
||
{% else %}<div class="empty">Keine fertigen Aufnahmen vorhanden.</div>{% endif %}
|
||
</div>
|
||
|
||
<div class="section">
|
||
<h2>Bearbeitete Aufnahmen</h2>
|
||
{% if finished %}
|
||
<table>
|
||
<thead><tr><th>Datei</th><th>Datum</th><th>Größe</th><th>Dauer</th><th></th></tr></thead>
|
||
<tbody>
|
||
{% for item in finished %}
|
||
<tr>
|
||
<td>{{ item.filename }}</td>
|
||
<td>{{ item.datetime }}</td>
|
||
<td>{{ item.size }}</td>
|
||
<td>{{ item.duration }}</td>
|
||
<td><a class="button" href="{{ url_for('finished_file', filename=item.filename) }}">▶ Abspielen / Download</a></td>
|
||
</tr>
|
||
{% endfor %}
|
||
</tbody>
|
||
</table>
|
||
{% else %}<div class="empty">Noch keine bearbeiteten Aufnahmen vorhanden.</div>{% endif %}
|
||
</div>
|
||
</div>
|
||
<script>
|
||
function showLoading() { document.getElementById('loadingOverlay').classList.add('active'); }
|
||
</script>
|
||
</body>
|
||
</html>
|
||
"""
|
||
|
||
|
||
# ---------------------------------------------------------------------------
|
||
# Routes
|
||
# ---------------------------------------------------------------------------
|
||
|
||
@app.route("/")
|
||
def index():
|
||
RECORDINGS_DIR.mkdir(parents=True, exist_ok=True)
|
||
FINISHED_DIR.mkdir(parents=True, exist_ok=True)
|
||
|
||
recordings = []
|
||
for path in RECORDINGS_DIR.glob("*.mp3"):
|
||
try:
|
||
stat = path.stat()
|
||
recordings.append({
|
||
"filename": path.name,
|
||
"datetime": format_datetime(stat.st_mtime),
|
||
"size": format_size(stat.st_size),
|
||
"duration": format_duration(get_duration(path)),
|
||
"mtime": stat.st_mtime,
|
||
})
|
||
except FileNotFoundError:
|
||
pass
|
||
|
||
finished = []
|
||
for path in FINISHED_DIR.glob("*.mp3"):
|
||
try:
|
||
stat = path.stat()
|
||
finished.append({
|
||
"filename": path.name,
|
||
"datetime": format_datetime(stat.st_mtime),
|
||
"size": format_size(stat.st_size),
|
||
"duration": format_duration(get_duration(path)),
|
||
"mtime": stat.st_mtime,
|
||
})
|
||
except FileNotFoundError:
|
||
pass
|
||
|
||
recordings.sort(key=lambda x: x["mtime"], reverse=True)
|
||
finished.sort(key=lambda x: x["mtime"], reverse=True)
|
||
|
||
return render_template_string(
|
||
INDEX_HTML,
|
||
recordings=recordings,
|
||
finished=finished,
|
||
recordings_dir=str(RECORDINGS_DIR),
|
||
)
|
||
|
||
|
||
@app.route("/edit/<path:filename>")
|
||
def edit_recording(filename):
|
||
path = source_path(filename)
|
||
if path is None:
|
||
abort(404)
|
||
|
||
duration = get_duration(path)
|
||
if duration is None:
|
||
abort(500, description="Aufnahmedauer konnte nicht ermittelt werden")
|
||
|
||
waveform = create_waveform(filename)
|
||
if waveform is None:
|
||
abort(500, description="Wellenform konnte nicht erzeugt werden")
|
||
|
||
return render_template_string(
|
||
EDITOR_HTML,
|
||
filename=filename,
|
||
duration=format_duration(duration),
|
||
duration_seconds=duration,
|
||
waveform_url=url_for("waveform", filename=filename),
|
||
audio_url=url_for("recording", filename=filename),
|
||
)
|
||
|
||
|
||
@app.route("/waveforms/<path:filename>")
|
||
def waveform(filename):
|
||
if source_path(filename) is None:
|
||
abort(404)
|
||
output = create_waveform(filename)
|
||
if output is None:
|
||
abort(404)
|
||
return send_from_directory(WAVEFORMS_DIR, output.name, mimetype="image/png")
|
||
|
||
|
||
@app.route("/recordings/<path:filename>")
|
||
def recording(filename):
|
||
path = source_path(filename)
|
||
if path is None:
|
||
abort(404)
|
||
return send_from_directory(RECORDINGS_DIR, path.name, mimetype="audio/mpeg")
|
||
|
||
|
||
@app.route("/finished/<path:filename>")
|
||
def finished_file(filename):
|
||
path = finished_path(filename)
|
||
if path is None or not path.is_file():
|
||
abort(404)
|
||
return send_from_directory(FINISHED_DIR, path.name, mimetype="audio/mpeg", as_attachment=False)
|
||
|
||
|
||
@app.route("/api/edit", methods=["POST"])
|
||
def api_edit():
|
||
data = request.get_json(silent=True) or {}
|
||
filename = data.get("filename")
|
||
|
||
try:
|
||
destination, duration = create_finished(filename, data.get("start"), data.get("end"))
|
||
return jsonify({
|
||
"success": True,
|
||
"filename": destination.name,
|
||
"duration": duration,
|
||
"duration_formatted": format_duration(duration),
|
||
})
|
||
except ValueError as exc:
|
||
return jsonify({"success": False, "error": str(exc)}), 400
|
||
except Exception as exc:
|
||
print(f"[edit] failed for {filename}: {exc}", flush=True)
|
||
return jsonify({"success": False, "error": "Schneiden fehlgeschlagen"}), 500
|
||
|
||
|
||
if __name__ == "__main__":
|
||
RECORDINGS_DIR.mkdir(parents=True, exist_ok=True)
|
||
FINISHED_DIR.mkdir(parents=True, exist_ok=True)
|
||
app.run(host="0.0.0.0", port=WEB_PORT)
|