Cómo usar Comprimir vídeo a menos de 25MB
- Elige tu archivo de vídeo.
- Define el tamaño objetivo en MB.
- Descarga el MP4 comprimido.
What this tool does
This target-size compressor estimates a video bitrate from your selected file duration and the MB limit you enter. It exports a shareable MP4 that is easier to attach to email, messaging apps, school portals, and support forms.
A 25MB target is common because many upload forms and email workflows reject larger files or make them inconvenient for recipients on mobile connections.
How browser processing works
The selected media file is opened by your browser and processed with FFmpeg WebAssembly on your device. The converter does not upload your video to a server for compression.
The first run can take longer while the browser loads the conversion engine. Processing time depends on file size, device performance, browser, and selected settings.
Supported formats and output
- Input
- Browser-readable video files such as MP4, MOV, WebM, and other formats supported by FFmpeg in the browser.
- Output
- MP4 with broadly compatible video and audio settings.
Practical examples
Email attachment
Trim a 90-second phone clip, set the target to 24MB, and export MP4 before attaching it.
Messaging app upload
Resize a large 4K clip to 720p before target compression if the group will watch it on phones.
Quality considerations
- Duration matters more than most people expect: the same 25MB budget looks better on a 20-second clip than a five-minute recording.
- Reducing resolution can make compression cleaner because fewer pixels need to share the same bitrate.
Limitations
- Very long videos may need an extremely low bitrate to fit under 25MB, which can make the result visibly soft.
- Target-size encoding is an estimate; output may land slightly above or below the requested size.
- Unsupported codecs, damaged files, or limited browser memory can stop conversion.
Preguntas frecuentes
¿La salida será exactamente de 25MB?
La herramienta estima la tasa de bits según la duración del vídeo y el tamaño objetivo. La mayoría de archivos queda cerca del objetivo, pero la codificación en el navegador puede quedar un poco por encima o por debajo.
¿Se sube mi archivo?
No. La conversión se ejecuta en tu navegador con WebAssembly. El archivo permanece en tu dispositivo.
¿Por qué la primera conversión tarda más?
El navegador debe cargar el núcleo WebAssembly de FFmpeg la primera vez. Después suele quedar en caché.
Troubleshooting
The file is still over 25MB. What should I try?
Trim extra seconds, reduce the video width, or choose a slightly lower target such as 23MB to leave room for container overhead.
The result looks blurry.
A long or high-motion video may not have enough bitrate at 25MB. Shorten the clip or use the general compressor with a higher quality setting.