A video file is a digital container format used to store video and audio data. It allows for the playback and distribution of video content. Video files can be compressed using various codecs to reduce file size while maintaining quality. Common video file formats include MP4, AVI, MOV, and WMV. These files can be played on different devices and platforms, such as computers, smartphones, and televisions. Video files can be created using video editing software or captured using cameras and camcorders. They are widely used for entertainment, education, marketing, and communication purposes.