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.

DivX is a progressive implementation of the MPEG-4 format. It offers a significantly higher degree of video compression (comparing to another H.263 video codecs) and carries a number of revolutionary innovations of that time. To playback DivX files on PC, you can use many different programs because currently most video players support DivX even in FullHD resolution. For viewing such files in modern browsers the company developed DivX Web Player. However, the H.263 standard (which DivX implements) was created in 1996 and is currently considered obsolete. It was replaced by the H.264 and H.265 standards that are implemented in more progressive codecs such as HEVC and AV1.