HOW DO YOU MP4 FILES ON WINDOWS MEDIA PLAYER?
Maybe audio codec issue, you can use mediainfo to find out the video codec of your video files, and install the right video codec to play your video, or you can download and install RZ Video Converter, it built-in a free all-in-one video codec and free media player, it support any mp4 videos, etc, and just play any video files, it is free. Of course, it also can convert any videos or audios between any different formats, but the video converter module isn’t free, just play any video files, it is free and without any limit. You can yahoo or google search and download RZ Video Converter, work well on my computer ,easy to use, good quality, hope it can help you.
MP4 files are not supported by Windows Media Player by default, but the installation of new codecs can allow them to be played. The codecs are free and easy to install, allowing you to play MP4’s in Windows Media Player as well as several other file formats. Windows Media Player and MP4’s MP4 files are video files that contain DVD-level audio and video encoding, featuring support for additional useful features such as integrated subtitles and online streaming. Unfortunately, Windows Media Player isn’t able to play MP4’s by default due to the lack of a codec capable of decoding their audio and video information. Microsoft recommends the installation of a DirectShow codec to make up for this deficiency so that you can play MP4’s in Windows Media Player. An easy-to-use DirectShow codec is available for free in the K-Lite codec packs that are developed by CodecGuide.com, as well as additional codecs which will allow Windows Media Player to support previously-unsupported file formats. Addit