AC3 (acronym for Audio Codec 3) is a Dolby Digital audio file format that usually features several individual frames.
In order to modify the length or the contents of AC3 audio tracks, users will need to find and use a compatible multimedia editor that comes with built-in support for this particular audio format.
AC3 editors will enable theiur users to merge or combine their audio files to obtain a larger audio track, or to split any AC3 to smaller parts.
One may also rely on a number of AC3 editors to quickly export AC3 audio files to other multimedia formats.