MP4ga

MP4ga refers to an audio stream within an MP4 container. While MP4 is primarily known for video, it can also contain audio tracks. The "ga" suffix is not a standard or official designation within the MP4 specification itself but is sometimes used informally to denote an audio-only stream. This naming convention is not universally recognized and can lead to confusion. Essentially, an MP4ga file is an MP4 file where the primary or only content is audio data. The audio codecs used within an MP4 container can vary, including popular formats like AAC (Advanced Audio Coding) and MP3. Software that can play MP4 video files will generally be able to play audio files contained within the MP4 format, regardless of whether the file is explicitly named with an "MP4ga" extension. The actual file extension might still be .mp4, with the "ga" serving as a descriptive hint about its content rather than a technical specification.