Convert MKV to M4A

MKV → M4A. Source file ≤ 2 GB · Output ≤ 100 MB · audio stream #1 → audio · video → ∅.

Matroska can hold several kinds of video and audio codecs. M4A output contains AAC audio without a video track. Only the first audio track is extracted; the source must contain audio. Video input is limited to 2 GB; audio output to 100 MB.

MKV → M4A: Example settings

60 s × 192 kbps ÷ 8 ≈ 1.44 MB • AAC / M4A

M4A: 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.