Fade

AviSynth+
Up-to-date documentation: https://avisynthplus.readthedocs.io

FadeIn	blends progressively from color at the beginning.
FadeOut	blends progressively to color at the end.
FadeIO	blends progressively from/to color at both ends.

• The sound track (if present) also fades linearly to and/or from silence.

• The fading affects only the first/last num_frames frames of the video.

 

• The first/last frame of the video becomes almost-but-not-quite color.

An additional color frame is added at the start/end, thus increasing the total frame count by one (or for FadeIO, by two).

 

• FadeIn0 / FadeOut0 / FadeIO0 do not add the extra color frames, leaving the end(s) almost-but-not-quite color.

• FadeIn2 / FadeOut2 / FadeIO2 add two extra color frames at the start/end instead of one.

Syntax and Parameters

FadeIn(clip clip, int num_frames [, int color , float fps ] )
FadeOut(clip clip, int num_frames [, int color , float fps ] )
FadeIO(clip clip, int num_frames [, int color , float fps ] )

FadeIn0(clip clip, int num_frames [, int color , float fps ] )
FadeOut0(clip clip, int num_frames [, int color , float fps ] )
FadeIO0(clip clip, int num_frames [, int color , float fps ] )

FadeIn2(clip clip, int num_frames [, int color , float fps ] )
FadeOut2(clip clip, int num_frames [, int color , float fps ] )
FadeIO2(clip clip, int num_frames [, int color , float fps ] )

clip  clip =

Source clip; all AviSynth color formats accepted.

int  num_frames =

Fade duration.

int  color = $000000

Specifies the start/end color; black by default.

• See Color presets for preset (named) colors.
• See Colors for more information on specifying colors numerically.

float  fps = 24.0

Provides a reference for num_frames in audio only clips. It is ignored if a video stream is present.

• Set fps=AudioRate if sample exact audio positioning is required.

Notes

FadeOut(clip, num_frames)

is just a shorthand for

Dissolve(clip, BlankClip(clip, num_frames+1, color=color), num_frames)

(with num_frames+2 instead of num_frames+1 for FadeOut2, and num_frames+0 for FadeOut0).

Changes

v2.56	FadeIn0/FadeIO0 /FadeOut0 commands are added and the fps parameter is added to all fade functions.
v2.07	Added FadeIO/FadeIO2 commands. Added color parameter to all fade functions.
v2.06	Till v2.06 the FadeIn/FadeIn2 commands do not exist, but you can get the same effect by reversing the arguments to Dissolve: Dissolve(Blackness(clip, n+1, color=color), clip, n).