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Fast WMA2WAV Conversion: Top Free Software Picks for 2026

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WMA2WAV Command-Line Tutorial: FFmpeg Examples and Tips

This tutorial shows how to convert WMA (Windows Media Audio) files to WAV using FFmpeg from the command line, with practical examples and tips for best results.

Prerequisites

  • FFmpeg installed: Download from https://ffmpeg.org and add to your PATH.
  • Basic terminal knowledge: Running commands in Windows Command Prompt, PowerShell, macOS Terminal, or Linux shell.

Basic conversion

Convert a single WMA to WAV with default settings:

Code
ffmpeg -i input.wma output.wav

This uses FFmpeg’s default decoder and saves a PCM WAV file.

Preserve original sample rate and channels

Explicitly set sample rate and channel count to match source:

Code
ffmpeg -i input.wma -ar 44100 -ac 2 output.wav
  • -ar 44100 sets sample rate (e.g., 44100 Hz).
  • -ac 2 sets stereo output.

Specify PCM format (bit depth)

Common PCM formats: s16 (16-bit), s24 (24-bit), s32 (32-bit float). Example 16-bit:

Code
ffmpeg -i input.wma -c:a pcms16le output.wav

24-bit:

Code
ffmpeg -i input.wma -c:a pcms24le output.wav

Batch conversion (multiple files)

Convert all WMA files in a folder (Linux/macOS):

Code
for f in.wma; do ffmpeg -i “\(f" "\){f%.wma}.wav”; done

Windows PowerShell:

Code
Get-ChildItem *.wma | ForEach-Object { ffmpeg -i \(_.FullName (\).BaseName + “.wav”) }

Convert and normalize volume

Normalize while converting using loudnorm (EBU R128):

Code
ffmpeg -i input.wma -af loudnorm -c:a pcms16le output.wav

Trim or extract a segment

Extract 30–90 seconds from a file:

Code
ffmpeg -ss 00:00:30 -to 00:01:30 -i input.wma -c:a pcm_s16le outputtrim.wav

Place -ss before -i for faster seeking (less accurate), after -i for frame-accurate seek.

Re-sample and downmix

Resample to 48 kHz and downmix to mono:

Code
ffmpeg -i input.wma -ar 48000 -ac 1 -c:a pcm_s16le output_48kmono.wav

Preserve metadata

FFmpeg generally copies basic metadata when possible. To explicitly copy tags:

Code
ffmpeg -i input.wma -map_metadata 0 -c:a pcm_s16le output.wav

Troubleshooting tips

  • If FFmpeg fails to decode a WMA, the file may use a proprietary codec; try using a newer FFmpeg build.
  • Use ffmpeg -v debug -i input.wma to see detailed decoding errors.
  • If resulting WAV is noisy or has artifacts, try a different PCM codec (s24 vs s16) or confirm source integrity.

Performance tips

  • Add -threads 0 to let FFmpeg auto-select threads.
  • For faster but less accurate seeking when trimming, put -ss before -i.

Example workflow summary

  1. Inspect file: ffmpeg -i input.wma
  2. Convert lossless 16-bit stereo: ffmpeg -i input.wma -c:a pcm_s16le -ar 44100 -ac 2 output.wav
  3. Normalize: add -af loudnorm
  4. Batch-process with a shell loop or PowerShell command.

If you want, I can generate ready-to-run batch scripts for your OS or show FFmpeg commands for other codecs.

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