The MUX format is H.262 + some private extensions.In order to maintain navigation ability and the reconvertability the codec suffers some limitations that others don't.It uses an in-codec scaler and the actual encoded picture size can vary in both dimensions between GOPs.Mode decision is part lagrangian optimization, part ad hoc based on statistics manually tuned to fit.It has a primitive in-loop deblocking filter.
The Quant level is determined for each macroblock by a simple psycho visual model
It uses an integer transformation that approximates DCT.It has intra prediction significantly more advanced than MPEG2, but not quite as flexible as H.264.To avoid drift in long GOPs it has a build-in intra-refresh mechanism.GOPs are significantly longer than normal DVD GOPs and always closed.It has a dynamic GOP structure, P frames have only one reference frame, B frames two.It is block based (No wavelets anywhere).The ratDVD authors claims that the closed source and proprietary ratDVD video codec (called "XEB") does not use ISO MPEG-4 nor H.264 patented technology but does contains routines which is similar in function and even to a small extend in output to what you'll find out there.įrom the ratDVD FAQ about the XEB video codec: While ratDVD contained the features that allowed the home user to create their own archived DVDs, this function has been removed from fluxDVD, allowing only content owners to make and sell fluxDVD archives, (unlike ratDVD, fluxDVD uses a video codec based on H.264). RatDVD was only a preview version of the now commercially sold fluxDVD, also closed source and proprietary. ratdvd movie files compressed by ratDVD are usually one to two GigaByte in size. ratDVD file and then playing its contents by on-the-fly decompressing the container and using a DirectShow-compatible DVD-Video player.
The ratDVD program (transcoder and GUI) works by compressing a full DVD-Video into a. It is currently available only for the Microsoft Windows operating-system. RatDVD is a is a highly compressed file type, containing all the contents of a DVD-Video movie, the format is closed source and proprietary.
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