MP4 is a container that contains various kinds of data, so when there is a problem opening the file, it usually means that data in the container (an audio or video codec) is not compatible with the device’s OS. On some devices, particularly mobile, opening this file type can be problematic. On Windows, it opens in Windows Media Player. There is no need for third-party software. Simply double-clicking the file opens it. MP4 files open in the operating system's default video player. Many consider MP4 to be one of the best video formats available today. It is also a popular video format for streaming over the Internet, such as on YouTube. It is compatible with a wide range of devices and operating systems, using a codec to compress file size, resulting in a file that is easy to manage and store. MPEG-4 (MP4) is a container video format that can store multimedia data, usually audio and video. UltraMixer is a cross-operating-system, software program for deejaying on which WAV files work well. Alternatively, programs such as iTunes, VLC media player, and QuickTime can also be used to open and play WAV files.ĭue to a WAV file’s higher, uncompressed quality, they are suitable for importing into music editing, production, and manipulation programs. The default player for opening WAV files is Windows Media Player. Their quality, however, does surpass that of M4A and MP3. WAV files are much larger than M4A and MP3 files, making them less practical for consumer use on portable players.

WAV is the result of IBM and Windows iterating a Resource Interchange File Format (RIFF). Waveform Audio (WAV) is the most-popular digital-audio format for uncompressed audio files.

How to convert a file to a mp4