What is aac to mp4?

AAC and MP4 are both audio file formats used to store digital audio data in a compressed form. AAC stands for Advanced Audio Coding, while MP4 stands for MPEG-4 Part 14.

AAC files generally have a higher quality-to-size ratio compared to MP3 files, making them a preferred choice for digital music distribution. AAC files are also the default format for Apple's iTunes music store.

On the other hand, MP4 is a multimedia container format, which means it can store both audio and video data. In addition to audio data, MP4 files can include subtitles, images, and other multimedia elements.

Converting AAC to MP4 involves compressing the AAC audio stream and saving it in an MP4 container with appropriate metadata. This conversion is typically done to create a multimedia file that can be played on various devices and software.