Xvid (formerly 'XviD') is a video codec library following the MPEG-4 video coding standard, specifically MPEG-4 Part 2 Advanced Simple Profile (ASP). It uses ASP features such as b-frames, global and quarter pixel motion compensation, lumi masking, trellis quantization, and H.263, MPEG and custom quantization matrices.
Is a media format designed for creating good quality video with resolution of 352x240 on 1.5 Mb/s flow. Now the standard MPEG-1, which belongs to the format supports a resolution of 4K. Resolution mpg is different from the rest of the MPG format family due to its maximum compatibility: files can be run on any PC or DVD-player.