Avi Synth Two Five SDK

This will list the main changes between 1.x, 2.0x and 2.5. Not all changes are listed here, but the new methods can be found in the new avisynth.h.

See information on WorkingWithPlanarImages.
The converted TwoFiveInvert plugin filter source it here.
The same algorithm demonstrating how to speed up the processing (using PLANAR_Y_ALIGNED, etc.) can be seen at TwoFiveFastInvert plugin source.
Pixel type has changed in AviSynth 2.5. See more in AviSynthTwoFivePixelType.
For working with audio, see AviSynthTwoFiveAudio.

AviSynthTwoFiveSDK