Xvid - a video codec like DivX.
Changes since 1.2.0:
xvidcore library
* Fix for 'nested function' potential compilation error
* WIN64 fix: Properly treat xmm6/xmm7 registers as non-volatile on WIN64
* Added test for WIN64 xmm6/xmm7 preservation to xvid_bench
Changes since 1.1.3:
xvidcore library
* Complete AMD64/EM64T 64-bit support
* Added support for WIN64 platform
* Multi-threaded encoding support
* SSE3/SSE4 optimizations
* FASTER and more precise mpeg intra quantization
* Fixed bug in packed pixel format Colorspace conversion
* Noexec-stack security patch
* Fix for bad Resync marker length
* Improved decoder robustness for Broken streams containing B-frames
* Fix for potential out-of-bound access to MV bits table
* Added SSIM quality-metric plugin
VFW frontend
* WIN64 compatibility
* Added widgets for SSE3/SSE4
* Auto-detection of available processor cores
* Minor GUI cosmetics
DShow frontend
* WIN64 compatibility
* Minor GUI cosmetics
