MPEG-2 Videos are used in some HDTV transmission systems also. MPEG-2 is widely used as the format of digital television signals and also specifies the format of movies that are distributed on DVD. MPEG-2 is used for both lossy video compression and lossy audio data compression. MPEG-1 it is used especially for making video CDs. Today, MPEG-1 is used for lossy compression of VHS-quality raw digital video and CD audio down to 1.5 Mbit/s, without quality loss. Moving Picture Experts Group Phase 1 (MPEG-1) has been extended from Jpeg and H.261 (a video coding standard used back in `80) and was extended to MPEG-2. MPV are also file name extensions for MPEG-1 and MPEG-2 standard. The MPEG-2 standard is compatible with MPEG-1. MPG could be encoded with MPEG-1 for VCD (Video CD) or MPEG-2 for DVD and SVCD (SuperVideo CD). You may want to convert your MPG files because you cannot import them in iMovie, the regular player. Windows Media Player from Windows OS can play MPEG-1 video by default. You should know about MPG file that it is a universal file name extension storing MPEG-1 or MPEG-2 compressed videos. 2.15 Convert Windows Movie Maker to WMV.
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