HEVC or h.265 is the most advanced codec for now because it has the lowest bitrate without losing the image quality. The codec has three main features that distinguishes it from others: parallel decoding, random access to images within the video stream and larger maximum block size. HEVC is aimed to offer the same level of video quality as AVC (h.264), but with improved compression, that is why a video file compressed with the codec will be twice smaller.

SWF is a format designed to store vector graphics and animation, it may contain sound, video, text and other data. Such files are widely used for creating animation, games and playing video and audio on web pages. It is possible to open SWF files with Adobe Flash Player or with a browser that has the flash plugin installed.