Cómo usar Comprimir vídeo
- Selecciona tu vídeo.
- Elige la calidad y, si quieres, el ancho máximo.
- Exporta un MP4 más pequeño.
What this tool does
The video compressor reduces file size by re-encoding the selected video as MP4. It is useful when a file is too large for email, class platforms, web forms, chat, or quick sharing.
Use this tool when you care about a quality setting more than a strict MB number. For a fixed upload limit, use the 25MB target-size compressor instead.
How browser processing works
Compression runs locally in the browser using FFmpeg WebAssembly. Your file is read from your device, processed inside the page, and offered back as a download.
Supported formats and output
- Input
- MP4, MOV, WebM, and other video files your browser and FFmpeg can read.
- Output
- MP4 intended for broad playback compatibility.
Practical examples
Classroom upload
Reduce a lesson recording to a smaller MP4 before uploading it to a learning platform.
Website preview
Resize and compress a product clip so it loads more comfortably on a web page.
Quality considerations
- Lower CRF values usually preserve more quality and create larger files.
- Screen recordings with small text need more detail than simple talking-head videos.
Limitations
- Compression always trades file size against quality.
- Large videos can fail if the browser tab runs out of memory.
- Some uncommon codecs may not preview or encode correctly in every browser.
Preguntas frecuentes
¿Qué formato de vídeo se exporta?
La salida predeterminada es MP4 con vídeo H.264 y audio AAC para mayor compatibilidad.
¿La compresión reduce la calidad?
Sí, los archivos más pequeños normalmente sacrifican algo de calidad. Usa un valor CRF más bajo si quieres mejor calidad y un archivo más grande.
Troubleshooting
The compressed video is not much smaller.
The source may already be highly compressed. Try lowering width, trimming duration, or choosing a stronger quality setting.
The browser becomes slow.
Close other heavy tabs, try a shorter clip, or use a desktop browser with more available memory.