Convert M4A to OPUS

M4A → OPUS. Source file ≤ 100 MB · Output ≤ 100 MB.

M4A output contains AAC audio without a video track. Opus output uses a 48 kHz audio sampling rate.

M4A → OPUS: Example settings

60 s × 192 kbps ÷ 8 ≈ 1.44 MB • Opus / 48 kHz

OPUS: Output

Sizes are examples, not guarantees. Container overhead is extra; variable bitrate and image content change the result. Keep the original and compare the output.

JavaScript is required for file selection and processing.