GIF file is an image, often accompanied by animation. It is formed by means of specialized graphic editors, it can carry several raster images in a certain sequence. GIF format is widespread in the field of creating banners, as well as the graphic shell of video content. The main advantage is data compression without an obvious loss of quality at a depth of up to 256 colors; modern editions of GIF animations include customizable transparency functions. Animated images consist of a number of static frames, as well as data on the required time of demonstration of a frame. Almost any program for viewing, processing images and video can open the extension, including on mobile devices, smartphones and tablets, regardless of the current operating system.
The MP4 file extension is mainly used for the MPEG-4 multimedia file format. MPEG-4 format is a standard developed by the Moving Picture Experts Group (MPEG), as defined in MPEG-4, that contains MPEG-4 encoded video and audio content encoded in Advanced Audio Coding (AAC). The most commonly used file extension is MP4.An .Mp4 file is a container defined in the system part of the MPEG-4 standard (ISO 14496-1). .Mp4 files support all kinds of multimedia content (multiple audio streams, video streams, subtitle streams, pictures) and enhanced content (the so-called “Rich Media” or “BIFS”), such as 2D and 3D graphics, interactivity, DVD menus. The .MP4 format is also streaming. MP4 is the most common file extension for the MPEG-4 format. An Mp4 file can contain both audio and video, and files with the M4A extension contain only audio tracks, and with the M4V file extension contain only video data. The M4R file extension is used for MP4 ringtones in iPhone smartphones and in the same place, the M4B file extension is also used. All of these formats use the same MPEG-4 technology.