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blind-dual-key.1 - blind - suckless command-line video editing utility
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blind-dual-key.1 (1399B)
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1 .TH BLIND-DUAL-KEY 1 blind
2 .SH NAME
3 blind-dual-key - Apply transparency to a video based on two videos and t…
4 .SH SYNOPSIS
5 .B blind-dual-key
6 .I X
7 .I Y
8 .I Z
9 .I dual-X
10 .I dual-Y
11 .I dual-Z
12 .I dual-stream
13 .SH DESCRIPTION
14 .B blind-dual-key
15 reads a video from stdin and a video
16 .IR dual-stream .
17 These two videos should be idential, except
18 with two different background colours. The
19 background colour used in the video from
20 stdin should be specified in the arguments
21 .IR X ,
22 .IR Y ,
23 and
24 .IR Z ,
25 using the CIE XYZ colour model. The
26 background colour used in the video from
27 .I dual-stream
28 should be specified in the arguments
29 .IR dual-X ,
30 .IR dual-Y ,
31 and
32 .IR dual-Z ,
33 using the CIE XYZ colour model. Using this information,
34 .B blind-dual-key
35 reconstruct the alpha channel of the video
36 and prints the video with its alpha channel to
37 stdout.
38 .SH NOTES
39 .B blind-dual-key
40 may be changed in the future to use some other colour model,
41 therefore, it is recommended to also use
42 .BR blind-colour-ciexyz (1)
43 if you are specifying the colour in CIE XYZ.
44 .P
45 When making a video whose transparancy is recovered with
46 .BR blind-dual-key ,
47 select to opposite background colours, for
48 example black and white or green and magenta.
49 .SH SEE ALSO
50 .BR blind (7),
51 .BR blind-colour-ciexyz (1),
52 .BR blind-colour-srgb (1),
53 .BR blind-chroma-key (1),
54 .BR blind-primary-key (1)
55 .SH AUTHORS
56 Mattias Andrée
57 .RI < [email protected] >
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