Version 1.001 · April 2026
Speed, precision, and fidelity — free forever.
Support Files: WAV · AIFF · FLAC · ALAC · OGG · WMA · AAC · MP3
Free DownloadFixed Constant Bitrate ensures maximum fidelity and compatibility with professional audio hardware, radio systems, and broadcasting.
Drop multiple files at once. The engine queues and converts them all — WAV, AIFF, FLAC, ALAC, OGG, WMA, AAC, and MP3.
Conversion runs on a separate thread. The UI stays responsive even when FFmpeg is processing at 100% CPU capacity.
Apply metadata in bulk: Title, Artist, Album, Year, Genre, and Comment — directly embedded into every output file.
FFmpeg pre-reads each file to extract exact duration in seconds, calculating a real-time accurate progress bar per conversion.
320 MP3 Fast Encoder is completely free. No subscriptions, no ads, no hidden limits. Pure encoding utility.
Clicking the edit icon opens a side panel where you can set: Title, Artist, Album, Year, Genre, and Comment.
Important: All fields defined in the editor will be applied to all files in the current queue after clicking APPLY.
When an output file already exists in the destination folder, a dialog presents three options:
| ENGINE | FFmpeg 2026 Build — world's leading multimedia library |
| AUDIO CODEC | Libmp3lame — best-in-class open-source MP3 encoder |
| COMPRESSION | CBR (Constant Bitrate) fixed at 320kbps |
| THREADING | -threads 0 — FFmpeg auto-selects optimal CPU core count |
| UI THREAD | Conversion engine runs isolated from the interface thread |
| SUPPORTED FORMATS | WAV · AIFF · MP3 · FLAC · ALAC · M4A (AAC) · OGG · WMA |
| OUTPUT FORMAT | MP3 · 320kbps CBR · ID3v1 tags |
| PLATFORM | Windows |
| VERSION | 1.0 — April 2026 |
| DISTRIBUTION | U-235 ® · Developer: OG L |
| LICENSE | Free — No restrictions |
320 MP3 Fast Encoder is and will always be free. If it saves you time, consider supporting the developer. Every contribution keeps the project alive.
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oglcontato@gmail.com