Avidemux Cannot Use That File As Audio Track Better [ OFFICIAL • 2025 ]

: Certain codecs, such as Vorbis or specific AAC variants in proprietary Apple formats, may not be supported for external insertion without first being re-encoded or extracted.

If you do not want to convert your audio file to MP3 because you want to preserve quality (e.g., you have a high-bitrate AAC file), you can try changing the of your project. avidemux cannot use that file as audio track