Unir audios
Une múltiples archivos de audio en una sola pista.
Drop audio files here to merge
or click to browse · select multiple files · max 500 MB total
Settings
FFmpeg WASM (~25MB) will be downloaded on first use and cached by your browser.
Audio Merger
Merge multiple audio files into a single MP3 file directly in your browser. Uses FFmpeg concat demuxer for seamless joining. All processing happens locally - no upload needed.
¿Para qué se usa?
- Combining multiple podcast segments into one episode
- Joining music tracks into a continuous mix
- Merging voice recordings from multiple sessions
- Creating audio compilations
Guía paso a paso
- Click upload or drag and drop multiple audio files
- Reorder files using the up/down arrows
- Click 'Merge' to combine all files
- Preview the merged result
- Download the combined MP3 file
Cómo funciona
FFmpeg's concat demuxer joins audio files sequentially. The output is re-encoded as MP3 with your chosen bitrate for maximum compatibility.
Consejos y mejores prácticas
- For seamless merging, use files with matching sample rate and channels
- Total file size is limited to 500MB
- Files are merged in the order shown - use the arrows to reorder
Audio Format Compatibility for Merging
| Feature | MP3 | WAV | FLAC |
|---|---|---|---|
| Compression | Lossy (small files) | Uncompressed (large files) | Lossless (moderate files) |
| Quality | Good at 192+ kbps | Perfect (no loss) | Perfect (no loss) |
| Browser Support | Universal | Universal | Most modern browsers |
| Merge Speed | Fast | Very Fast | Moderate |
| Best For | Podcasts, music, sharing | Professional editing, mastering | Archival, audiophile use |
Preguntas frecuentes
Can I merge audio files with different sample rates?
Yes, files with different sample rates can be merged. The tool re-encodes all input audio to a common MP3 format, which normalizes sample rates automatically. However, for the highest quality output, it's best to use source files with matching sample rates (e.g., all 44.1 kHz or all 48 kHz) to avoid unnecessary resampling artifacts.
Will merging audio files reduce quality?
There is a small quality reduction since the output is re-encoded as MP3. If your source files are already MP3, re-encoding introduces one additional generation of lossy compression. For critical quality, start with lossless sources (WAV or FLAC) whenever possible. The output bitrate you choose also affects the final quality - 192 kbps or higher is recommended for music.
How do I control the order of merged audio files?
After uploading your files, use the up and down arrow buttons to reorder them. The files are merged in the exact order shown in the list, from top to bottom. You can also remove individual files and re-upload them if needed. Take time to arrange the order before clicking merge.
What's the maximum file size for audio merging?
The total combined file size of all audio files must be under 500MB. Since all processing happens in your browser's memory, very large files may slow down the merge process. For long recordings (e.g., multi-hour podcasts), consider splitting the work into smaller batches and merging progressively.
Can I add silence between merged audio clips?
The current tool merges audio files back-to-back without gaps. If you need silence between clips, you can create a short silent audio file and include it between your clips in the merge order. Alternatively, record a few seconds of silence and add it as a separate file in your merge queue.
Privacidad y Seguridad
Esta herramienta utiliza FFmpeg compilado a WebAssembly (WASM). El binario WASM (~25MB) se descarga desde un CDN en el primer uso y se almacena en la caché de tu navegador. Todo el procesamiento de archivos ocurre localmente en tu dispositivo: tus archivos nunca se suben a ningún servidor. Esto lo hace seguro para archivos multimedia sensibles, privados o confidenciales. Los archivos grandes pueden tardar más en procesarse dependiendo de la CPU y la memoria disponible de tu dispositivo.