無料オンライン Video Compressor - ToolBox
無料オンラインvideo compressor to MP4 (H.264)、scaling and CRF quality control. Runs locally。
Video compressor to MP4 (H.264) with CRF quality control and optional scaling. Loads ffmpeg.wasm locally (no uploads).
支持拖拽新视频到此区域直接替换。
File
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Note: higher CRF means smaller size and lower quality (common range: 20–28).
FFmpeg logs