GopherProxy

	blind-chroma-key.1 - blind - suckless command-line video editing utility
	git clone git://git.suckless.org/blind
	Log
	Files
	Refs
	README
	LICENSE
	---
	blind-chroma-key.1 (1247B)
	---
	1 .TH BLIND-CHROMA-KEY 1 blind
	2 .SH NAME
	3 blind-chroma-key - Replace a colour range with transparency
	4 .SH SYNOPSIS
	5 .B blind-chroma-key
	6 .I key-stream
	7 .SH DESCRIPTION
	8 .B blind-chroma-key
	9 reads a video from stdin and colours from
	10 .IR key-stream .
	11 Each frame in
	12 .I key-stream
	13 should contain exactly two pixels. The colour of
	14 the first pixel, and all colours with a distance
	15 from that colour upto the same distance the colour
	16 of the second pixel has to that colour, will be
	17 turned into transparency in the video from stdin,
	18 and the resulting video will be printed to stdout.
	19 .P
	20 If the two colours in a frame from
	21 .I key-stream
	22 have the same alpha value, all matching colours
	23 will be turned into full transparency. Otherwise,
	24 the colours matching the first colour will be
	25 given the transparency specified with the first
	26 colour, all other matching colours will have
	27 a transparency between to two specified alpha
	28 values. However, if alpha value of the second
	29 colour is less than the alpha value of the first
	30 colour, twos alpha values are inverted.
	31 .SH SEE ALSO
	32 .BR blind (7),
	33 .BR blind-from-text (1),
	34 .BR blind-colour-ciexyz (1),
	35 .BR blind-colour-srgb (1),
	36 .BR blind-dual-key (1),
	37 .BR blind-primary-key (1)
	38 .SH AUTHORS
	39 Mattias Andrée
	40 .RI < [email protected] >