MP3をAACに変換
MP3の音声をAACに変換すれば、新しいコーデックを求める端末や配信環境に対応できます。
変換元
To
MP3
The universal audio format. Small files that play on every device, app, and player made in the last two decades.
AAC
Raw AAC audio — MP3's successor, used in streaming and broadcasting. Efficient, but fewer apps open bare AAC files.