From d2b8e19411dae84059104441bd186bbdf35df7e3 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Fri, 20 Jan 2017 15:38:03 +0100 Subject: Add man pages MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- man/blind-set-alpha.1 | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 man/blind-set-alpha.1 (limited to 'man/blind-set-alpha.1') diff --git a/man/blind-set-alpha.1 b/man/blind-set-alpha.1 new file mode 100644 index 0000000..8e53c18 --- /dev/null +++ b/man/blind-set-alpha.1 @@ -0,0 +1,33 @@ +.TH BLIND-SET-ALPHA 1 blind +.SH NAME +blind-set-alpha - Multiply the alpha channel of a video +.SH SYNOPSIS +.B blind-set-alpha +[-i] +.I alpha-stream +.SH DESCRIPTION +.B blind-set-alpha +reads a video from stdin and a mask video from +.IR alpha-stream . +The video is printed to stdout, with each alpha value +multiplied by the product of the luminosity and the +alpha value of the corresponding pixel and frame in +the mask video. +.P +If stdin is longer than +.IR alpha-stream , +the remainder or stdin is printed without any changes. +If stdin is shorter than +.IR alpha-stream , +the remainder of +.I alpha-stream +is ignored but may be partially read. +.SH OPTIONS +.TP +.B -i +Use the inverse luminosity of the mask video instead +of the luminosity. It is still multiplied by the +alpha value. +.SH AUTHORS +Mattias Andree +.RI < maandree@kth.se > -- cgit v1.2.3-70-g09d2