MPEG-4 is a method of defining compression of audio and visual (AV) digital data. It was introduced in late and designated a standard for a group of audio Background - Overview - MPEG-4 Parts - MPEG-4 Levels. M4A, for naming audio-only MP4 files has been a source of confusion among users and multimedia playback software. Is MPEG-4 Apple's proprietary audio file format or something? I just want them to be good ol' MP3 files so I can play them on my celly. My PC is.
MPEG Advanced Audio Coding MPEG doc#: NDate: October MPEG-4 AAC incorporates MPEG-2 AAC, with the addition of the Perceptual Noise. MPEG-4 audio (M4a) files are encoded using the Advanced Audio Coding (AAC) or Apple Lossless (ALAC) codecs. They are recognized by the iPod personal. M4A is a file extension for an audio file encoded with advanced audio coding ( AAC) which is a lossy compression. M4A was generally intended as the successor.
Many M4A files are encoded with the Advanced Audio Coding (AAC) codec in order to reduce the size of the file. Some M4A files may instead. Information technology -- Coding of audio-visual objects -- Part 3: Audio. Formal name for the relevant part of the MPEG-4 standard; note that. I'm trying to decide whether to d/l my cd collecion on my new hard drive as MPEG4 audio or MP3. It seems as though MPEG4 is the default on. Click the "Add Media Files" button at the top left of the All Audio Converter window. Locate and select the MPEG4 file you want to convert to.