ファイル・メディア
ビデオ圧縮
Shrink any video — adjustable quality slider.
Drop a file or click to browse
Lower CRF = higher quality, larger file (sweet spot: 23-28)
FFmpeg.wasm runs entirely in your browser. The first use downloads ~30 MB of engine — cached for every subsequent run.
編集者注
Understanding · The CRF dial, not the bitrate.
この詳細な解説章は現在、英語版のみで提供されています。上の変換ツールはあなたの言語で動作しますが、長文の解説記事はまだ翻訳されていません。
よくある質問
Quick answers.
›Is my video uploaded to your servers?
No. The compression process runs entirely within your browser using your device's local processing power.
›Which video formats are supported?
Most modern formats including `MP4`, `WebM`, and `MOV` are supported, though compatibility depends on your specific browser's encoding capabilities.
›How does the quality slider work?
Lowering the quality increases the compression ratio, resulting in a smaller file size but more visible artefacts in the footage.
›Will the audio quality be affected?
The compressor primarily targets the video bitrate to save space, but audio is usually re-encoded at a standard efficient bitrate to maintain balance.
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