What is XviD
XviD is an Open-source compression codec based on MPEG-4 ISO format. It uses ASP features such as b-frames, global and quarter pixel motion compensation, Lummi masking, trellis quantization, and H.263, MPEG and custom quantization matrices. XviD, like many other MPEG-4 formats, can be played with certain MPEG-4 compatible, stand-alone DVD/DivX/XviD players.
Xvid is not a video format – it is a program (codec) for compressing and decompressing to the MPEG-4 ASP format. Since Xvid uses MPEG-4 Advanced Simple Profile (ASP) compression, any video that is encoded with it is termed “MPEG-4 ASP video” – not “Xvid video” – and can therefore be decoded with all MPEG-4 ASP compliant decoders. This includes a large number of media players and decoders, in particular all the ones based on the free/open source libavcodec library from FFmpeg (for example, MPlayer, VLC, ffdshow or Perian).
Xvid encoded files can be written to a CD or DVD and played in some (not all) DivX compatible DVD players and media players. However, Xvid can optionally encode video with advanced MPEG-4 features that most DivX Certified set-top players do not support. Files encoded with global motion compensation, Qpel, MPEG quantization, multiple B-frames or files that exceed the VBV limitations may not play back properly on DivX Certified hardware devices.
DVD Ripper: DVD converter which is made for help users convert DVD to MOV, MP4, AVC, AVI, FLV, MPEG format with no fees involved, also capable of converting DVD to iPhone, iPod, iPad, etc. Makes perfect 1:1 copy with 5 minutes and constantly update to defeat upcoming DVD copy protections.
Video Converter: easily convert video to general video, HD video, iPhone, iPad, iPod, PSP, ZUNE, etc. Moreover, it builds 210 video and audio codec, a perfect multi-functional combination of HD Video Converter, DVD Burner & Website Video Downloader.