Video players and editors are mobile or web-based applications that allow users to play and edit video files. Video players can play a wide variety of video formats, such as MP4, AVI, and MKV, and may offer features such as subtitle support, playback speed control, and picture-in-picture mode. Video editors can be used to trim, cut, and merge video clips, add effects and transitions, and add text and audio tracks. Some apps are focused on one specific feature, while other apps offer both player and editing functionality. Examples of popular video players and editors include VLC player, QuickTime, iMovie, and Adobe Premiere Rush.