![]() ![]() It reduces or completely discards information in certain frequencies and areas of the picture that the human eye has limited ability to fully perceive. MPEG-1 Video exploits perceptual compression methods to significantly reduce the data rate required by a video stream. Theora is a superset of VP3, and VP3 streams can be converted into Theora streams without recompression. The Theora video-compression format is essentially compatible with the VP3 video-compression format, consisting of a backward-compatible superset. It is designed to compress VHS-quality raw digital video and CD audio down to 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) without excessive quality loss, making video CDs, digital cable/satellite TV and digital audio broadcasting (DAB) possible. MPEG-1 is a standard for lossy compression of video and audio. It is distributed without licensing fees. Theora is a free lossy video compression format. OGV file is video file that uses the Xiph.Org's open source Ogg container format may contain video streams that use one or more different codecs, such as Theora. Motion Picture Experts Group File Interchange Format
0 Comments
Leave a Reply. |