Projects / Xvid


Xvid (formerly XviD) is an open source MPEG-4 video codec, implementing MPEG-4 Simple Profile, Advanced Simple Profile, and Advanced Video Coding standards. It is written in C with assembler optimizations for quality and speed (including MMX, SSE, and 3Dnow! code for i386 and AltiVec for PowerPC), and is especially optimized towards offline, multi-pass compression for storage and archival purposes.

Operating Systems

Recent releases

  •  29 May 2009 20:45

    Release Notes: A potential RGB24 access violation was fixed. A fix for a missing resync marker range check was made. A workaround for a nasm bug with the Mach-O/OS X targets was implemented. The precision for RGB<->YUV conversions was improved.

    •  02 Dec 2008 15:29

      Release Notes: AMD64/EM64T 64-bit support was completed. Multi-threaded encoding support was introduced. SSE3/SSE4 optimizations were made. Faster and more precise MPEG intra quantization was enabled. A bug in packed pixel format colorspace conversion was fixed. A no-exec stack security patch was applied. A fix for bad resync marker length was made. Decoder robustness was improved for broken streams containing B-frames. A fix for potential out-of-bound access to MV bits table was made. An SSIM quality-metric plugin was added.

      •  02 Jul 2007 21:34

        Release Notes: This release fixes a potential vulnerability in mbcoding.c as reported in the Secunia advisory SA25711.

        •  08 Nov 2006 13:24

          Release Notes: A bug with frame-drop in combination with packed B-frames was fixed. Non-aligned bitstream buffers were fixed. Several fixes for IA64, for potential crashes on EM64T, and for a segfault in the VFW frontend were made.

          •  01 Aug 2006 18:36

            Release Notes: Improved low bitrate quality and VBV support. Rate-Distortion mode decision for bvops. New post-processing functions: brightness and deringing. New ports: PowerPC and AMD-64. Various decoder and encoder speedups. A few bugs have been squashed.


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