S3M to Opus - Online Audio Converter

Convert S3M to Opus online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert S3M to Opus

[+] Drop S3M audio here or click to select S3M

Output format

Opus (Opus)

Mode[i]

Simple Advanced

Quality[i]

Sample Rate[i]

Channels[i]

About S3M to Opus

Convert S3M to Opus. S3M (Scream Tracker 3) sequences 16 digital channels with effects. Opus adapts from 6 kbps speech to 510 kbps music with low latency. CD-era hardware may not decode it; use MP3 for legacy players..

Why convert S3M to Opus?

Smaller files with Opus lossy compression.
Keep quality where supported.
Private, no upload - runs in your browser.

S3M vs Opus

Codec	S3M	Opus
Compression	sequence	lossy
Sample behavior	Note events - no audio samples	Quality set by bitrate
Typical use	S3M (Scream Tracker 3) sequences 16 digital channels with effects.	Opus adapts from 6 kbps speech to 510 kbps music with low latency.

When not to convert S3M to Opus

Skip Opus for archival masters: lossy compression discards detail, so keep the S3M original.
Keep a master copy: repeated exports stack small losses, so archive S3M before batch Opus shares.

Limits

Starting point: S3M - S3M (Scream Tracker 3) sequences 16 digital channels with effects. Stereo panning quirks differ by player; check the mix. CD-era hardware may not decode it; use MP3 for legacy players. Encode Opus (Opus) from S3M at 256k for music or 128k for speech, starting from the master.

How conversion works

Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.

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FAQ

How do I convert S3M to Opus?

Drop your S3M file onto this page, choose quality and codec settings, then click Convert. The result downloads as Opus instantly. All processing runs in your browser.

What codec is used for Opus?

The default codec for Opus is Opus. You can change audio parameters in Advanced mode.

How do you store my files?

We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.