Software & Apps File Types What Is an MP4V File? How to open, edit, and convert MP4V files Share Pin Email Print File Types Design Cryptocurrency MS Office Windows Linux Google Drive Apps File Types Backup & Utilities View More By Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated December 16, 2019 MP4V stands for MPEG-4 Video. It was created by Moving Pictures Experts Group (MPEG) as a codec used to compress and decompress video data. You probably won't see a video file that has the .MP4V file extension. However, if you do, the MP4V file can still open in a multi-format media player. We have some MP4V players listed below. If you see "MP4V" in the context of a video file, it just means that the video was compressed with the MP4V codec. MP4, for example, is one video container that may use the MP4V codec. More Information on the MP4V Codec MPEG-4 provides a standard for describing how to compress audio and video data. Within it are several parts that describe how certain things should work, one of which is video compression, which is in Part 2 of the specification. If a program or device says that it supports the MP4V codec, it, of course, means that certain types of video file formats are allowed. Like you read above, MP4 is one container format that might use MP4V. However, it could instead use H264, MJPB, SVQ3, etc. Having a video with the .MP4 extension doesn't mean that it's using the MP4V codec. MP4V-ES stands for MPEG-4 Video Elemental Stream. MP4V differs from MP4V-ES in that the former is raw video data while the latter is RTP (real-time transport protocol) data that's already prepared to be sent over the RTP network protocol. This protocol only supports the MP4V and H264 codecs. MP4A is an audio codec that can be used inside MPEG-4 containers like MP4. MP1V and MP2V are video codecs as well, but they're referred to as MPEG-1 Video files and MPEG-2 Video files, respectively. How to Open an MP4V File Some programs natively support the MP4V codec, which means that you can open MP4V files in those programs. Remember that although a file may be an MP4V file in the technical sense (since it uses that codec), it does not need to have the .MP4V extension. Some programs that can open MP4V files include VLC, Windows Media Player, Microsoft Windows Video, QuickTime, iTunes, MPC-HC, and likely some other multi-format media players. There are lots of file types that share similar letters to MP4V, like M4A, M4B, M4P, M4R, and M4U (MPEG-4 Playlist) files. Some of these files may not open in the exact same way as MP4V files because they're each used for a unique purpose. How to Convert an MP4V File Instead of looking for an MP4V to MP4 converter (or whatever format you want to save the video to), you should get a video converter based on the file extension that the video is using. For example, if you have a 3GP file that's using the MP4V codec, just look for a 3GP video converter. Remember that M4V files aren't the same as the MP4V codec. That list of free video converters can also be used to find an M4V to MP3 converter, one that saves M4V to MP4, etc. MP4 vs M4V vs MP4V The MP4, M4V, and MP4V file extensions are so similar that you might easily mistake them for the exact same file format. Here's how you can quickly understand their basic differences: MP4: A codec and a container format for storing audio and video in just one file.M4V: An MP4 file that can be DRM copy-protected.MP4V: Raw MPEG-4 Video streams that aren't necessarily held in the MP4 container.