Convert animated GIF to MP4 video. Free online conversion.
| ファイル名 | サイズ | 変換先 |
|---|
ファイルと選択した出力形式を確認しています。
通常、10 MB のアニメーション GIF は MP4 として 0.5 ～ 3 MB になります。
品質: MP4 uses modern H.264 video compression — quality is typically better than the source GIF, with millions of colors instead of 256.
Heads up: MP4 doesn't support transparency, so transparent backgrounds in your GIF will be flattened (usually to white).
以下に最適: sharing animations on Twitter/Reddit (they auto-convert GIFs to video anyway), embedding in modern web pages.
次の場合は避けてください。 you need transparency or the target platform only accepts GIF (Slack reactions, some forums).
ヒント: Modern social platforms convert uploaded GIFs to MP4 automatically. Uploading MP4 directly skips that step and looks better.
MP4 (with H.264 video and AAC audio) is the universal video format — plays on every phone, TV, browser, and video-editing app. Convert to MP4 when uploading to YouTube, Instagram, TikTok, or any platform that doesn't specify otherwise. MP4 is the default output for smartphone recording and the expected format for shared / embedded video.
2 つの形式の技術的な比較 - どちらを使用するかを決定する場合、または変換中に何が変更されるかを確認する場合に役立ちます。
| プロパティ | GIF | MP4 |
|---|---|---|
| フルネーム | Graphics Interchange Format | MPEG-4 Part 14 |
| 導入年 | 1987 | 2001 |
| 開発者/標準ボディ | コンピュサーブ | MPEG |
| MIMEタイプ | image/gif | video/mp4 |
| ファイル拡張子 | .gif | .mp4 / .m4v |
| 圧縮 | Lossless (LZW) | H.264 or H.265 codec |
| カラー/データ深度 | 8-bit indexed (256 colors) | 8/10-bit |
| 最大寸法/サイズ | 65,535 × 65,535 ピクセル | Codec-dependent (up to 8K) |
| 透明性 | はい | いいえ |
| アニメーション | はい | いいえ |
| 規格・仕様 | GIF89a (CompuServe) | ISO/IEC 14496-14 |
| こんな方に最適 | Short animations, simple graphics with limited colors | ユニバーサルビデオ互換性 — すべてのデバイスで再生可能 |
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