first commit

.gitignore

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+# Created by https://www.toptal.com/developers/gitignore/api/python
+# Edit at https://www.toptal.com/developers/gitignore?templates=python
+
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+### Python Patch ###
+# Poetry local configuration file - https://python-poetry.org/docs/configuration/#local-configuration
+poetry.toml
+
+# ruff
+.ruff_cache/
+
+# LSP config files
+pyrightconfig.json
+
+# End of https://www.toptal.com/developers/gitignore/api/python
+
+web/static/*

docker-compose.yml

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+services:
+  web:
+    build: ./web
+    volumes:
+      - ./web/static/uploads:/app/static/uploads
+    ports:
+      - "5001:5000"

web/Dockerfile

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+# ベースイメージ
+FROM python:3.9-slim
+
+# 作業ディレクトリの設定
+WORKDIR /app
+
+# 必要なパッケージのインストール
+RUN apt-get update && apt-get install -y ffmpeg
+COPY requirements.txt requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+# アプリケーションファイルのコピー
+COPY . .
+
+# コンテナ起動時に実行されるコマンド
+CMD ["python", "app.py"]

web/app.py

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+from flask import Flask, request, send_file, render_template
+import os
+from process_audio import process_mp3
+from zipfile import ZipFile
+import io
+
+app = Flask(__name__)
+app.config['UPLOAD_FOLDER'] = 'static/uploads'
+
+if not os.path.exists(app.config['UPLOAD_FOLDER']):
+    os.makedirs(app.config['UPLOAD_FOLDER'])
+
+@app.route('/')
+def index():
+    return render_template('index.html')
+
+@app.route('/upload', methods=['POST'])
+def upload_file():
+    if 'files' not in request.files:
+        return "No file part"
+    files = request.files.getlist('files')
+    if not files:
+        return "No selected file"
+    
+    processed_files = []
+    for file in files:
+        if file and file.filename.endswith('.mp3'):
+            filepath = os.path.join(app.config['UPLOAD_FOLDER'], file.filename)
+            file.save(filepath)
+            processed_filepath = process_mp3(filepath)
+            processed_files.append(processed_filepath)
+        else:
+            return "Invalid file type"
+
+    # ZIPファイルの作成
+    zip_buffer = io.BytesIO()
+    with ZipFile(zip_buffer, 'w') as zip_file:
+        for processed_file in processed_files:
+            zip_file.write(processed_file, os.path.basename(processed_file))
+    zip_buffer.seek(0)
+    
+    return send_file(zip_buffer, as_attachment=True, download_name='intro_files.zip', mimetype='application/zip')
+
+if __name__ == '__main__':
+    app.run(debug=True, host='0.0.0.0')

web/process_audio.py

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+from pydub import AudioSegment, silence
+import os
+
+def process_mp3(filepath):
+    audio = AudioSegment.from_mp3(filepath)
+    
+    # 無音区間を検出して削除
+    non_silent_audio = silence.detect_nonsilent(audio, min_silence_len=500, silence_thresh=-50)[0]
+    trimmed_audio = audio[non_silent_audio[0]:]
+    
+    # 1秒の無音を作成
+    silence_segment = AudioSegment.silent(duration=1000)
+    
+    # 無音を冒頭に追加
+    audio_with_silence = silence_segment + trimmed_audio
+    
+    # トリミング
+    final_trimmed_audio = audio_with_silence[:15000]
+    
+    # フェードアウト
+    faded_audio = final_trimmed_audio.fade_out(1000)
+    
+    processed_filepath = filepath.replace('.mp3', '_intro.mp3')
+    faded_audio.export(processed_filepath, format='mp3')
+    
+    return processed_filepath

web/requirements.txt

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+Flask
+pydub

web/templates/index.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>MP3 Uploader</title>
+</head>
+<body>
+    <h1>Upload MP3 Files</h1>
+    <form action="/upload" method="post" enctype="multipart/form-data">
+        <input type="file" name="files" accept=".mp3" multiple>
+        <input type="submit" value="Upload">
+    </form>
+</body>
+</html>