AviSynth is a very very powerful tool for video post-production. It provides almost unlimited ways of editing and processing videos. AviSynth works as a frameserver, providing instant and very fast editing without the need for temporary files. What's new:

- ConvertToFloat() fast SSE & SSE2 + Opt output copy.
- ConvertFromFloat() fast SSE2.
- ResampleAudio() support SFLOAT.
- Large amount of stability fixes.
- ShowFiveVersions() YV12 + Grey fill 2 corner rectangles.
- Fast Tweak, RGB Bias+Analyse, Limiter show.
- ChangeFPS/ConvertFPS(clip, ...) as per AssumeFPS
- Correct multi-channel audio fading.
- Optimizations in Merge.


Download: AviSynth 2.5.6