SWF is a flash animation file format created as a flash development application. In particular, for Adobe Flash. Users of the global network had to watch advertising animations when the picture “comes to life” and changes, you just have to point the arrow of the manipulator on it. This format has gained great popularity in the global network, because it uses videos and banners, as well as special flash-games. Such files usually contain text or animation, in which there are inserts of vector, bitmap images, audio tracks, as well as scripts in the Action Script language. This extension belongs to the category of video files. This format was created in 1995 by the Future Wave Software group of Americans. At that time, Future Splash Animator had the SPL extension. A year has passed. Macromedia bought the extension rights and gave the application a new name - Macromedia Flash. And then, in 2005, this company was acquired by Adobe. It was then that the beginning of the modern history of this expansion was laid. In order to open files with the extension SWF (Small Web Format), you need a special application Adobe Flash Player or a web browser that works with Flash technology. In the browser, Goggle Chrome is a built-in flash player, and therefore there is no need to install anything additionally. Anyone who uses a browser, say Mozilla Firefox, Internet Explorer and others, must install the Adobe Flash module. Creating a SWF file will require Adobe Flash (Professional or Builder).
M2V is a video category file format, also called MPEG-2 Video. It supports video with a tighter time constraint and interlaced display. The encoded speed at which data is transmitted may be of the order of 40 Mbps (for storage and transmission). It may be higher for professional use in video production. Large frame sizes do not support HD resolution. MPEG-2 format is compatible with MPEG-1. The MPEG-2 format is used mainly for the consumer level of video broadcasting - for example, DVB. And for storage - for example, DVD. But they are also used for professional applications. Say for storing video in a studio. Files with the extension .m2v are necessary if you are preparing a video for burning to DVD using specialized programs. There will be no sound in such a file. This encoding method also involves the .m2a file, where the sound is stored. Then this pair of files (.m2v and .m2a) will be sent to the authoring program line. The program will output them without recoding in the program stream (MPEG 2 PS). There is one caveat. When the weight of these files is 4.3 GB or more, then you need to transcode this file and reduce the bitrate. So when you create * .m2v, you must first select the correct bitrate.