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Guides2024年8月20日5 min read

ウェブ向け動画圧縮:画質を損なわずにファイルサイズを削減する

この記事は英語で利用可能です。インターフェースは日本語に翻訳されています。

Video files are often the largest assets on a website. Proper compression can reduce sizes by 50-90% while maintaining quality.

Key Concepts

  • Bitrate: Amount of data per second (higher = better quality, larger file)
  • Resolution: Frame dimensions (1080p, 720p, 480p)
  • Codec: The compression algorithm (H.264, VP9, AV1)
  • Container: File format (MP4, WebM, MKV)
  • Recommended Settings

    |----------|-----------|---------|--------|

    Compression Tips

    1. Lower resolution has more impact than lowering quality

    2. Remove audio if not needed

    3. Trim unnecessary footage before compressing

    4. Use 2-pass encoding for best quality-to-size ratio

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