Convert AAC to MP3 with FFmpeg

FFmpeg can transcode audio between formats quickly. To convert an AAC file to MP3 using the LAME encoder, you can run:

ffmpeg -i input.aac -c:a libmp3lame -b:a 192k output.mp3

The -c:a libmp3lame option selects the MP3 encoder, and -b:a sets the target audio bitrate. You can also use -q:a for variable bitrate (VBR) quality levels instead of a fixed bitrate.

Common pitfalls

• Ensure the input path is correct and quoted if it has spaces.
• If you hear artifacts, try a higher bitrate or use VBR via -q:a 2 (lower is higher quality for LAME).

Head back to the generator on the home page to assemble more complex commands.