refactor(media-duration): replace moviepy with mutagen and pymediainfo

Refactoring Request Template

Title (semantic)

refactor(media-duration): replace moviepy with mutagen and pymediainfo

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Description

This merge request refactors media duration extraction by replacing MoviePy with lightweight metadata-based libraries.

Changes Made

• Removed MoviePy dependency from app/utils/media_duration.py
• Replaced audio duration extraction with Mutagen
• Replaced video duration extraction with PyMediaInfo
• Removed ffmpeg subprocess fallback and re-encoding logic
• Simplified duration extraction to use metadata headers instead of decoding media
• Preserved existing function behavior/API for backward compatibility
• Improved error handling for unsupported or corrupted media files
• Removed unused imports and dead code related to MoviePy

Dependency Updates

Updated pyproject.toml:

Removed:

• moviepy

Added:

• mutagen
• pymediainfo

Benefits

• Reduced dependency weight
• Faster duration extraction
• Cleaner implementation
• Eliminated hidden ffmpeg dependency
• Improved maintainability and reliability

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Checklist

• Code has been refactored for clarity, maintainability, or performance
  • No functional changes have been introduced
  • Existing behavior/API preserved
  • All existing tests are passing
  • Code adheres to project coding standards
  • Removed unnecessary dependencies and dead code

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Related Issue(s)

Closes #102