DIVX codec v4.01 aşağıdaki hata düzeltmeleri ve geliştirmelerini içeriyor.
* Fixed more problems with decoding 3.x
* Incompatibility of codec with Vidomi encoder
* Incorrect bitrate achieved during capture in ‘1-pass’ mode with AVI_IO capture application
* A few bugs in decoder implementation MPEG-2 inverse quantization ( not really used now, but necessary to claim that decoder is 100%compliant with MPEG-4 simple profile )
* Slightly improved accuracy of RGB->YUV MMX/SSE conversions
* Increased version number ( 4.0 -> 4.01 )
* Some cleanup in help file topic ‘deinterlacing’
* most important: hopefully fixed problem with some DivX 3.11 clips fading to green between keyframes.