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	blind-crop.1 - blind - suckless command-line video editing utility
	git clone git://git.suckless.org/blind
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	blind-crop.1 (1840B)
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	1 .TH BLIND-CROP 1 blind
	2 .SH NAME
	3 blind-crop - Extract subframes for all frames
	4 .SH SYNOPSIS
	5 .B blind-crop
	6 [-s \| -S \| -t]
	7 .I width
	8 .I height
	9 .I left
	10 .I top
	11 .SH DESCRIPTION
	12 .B blind-crop
	13 reads a video from stdin and prints a cropped
	14 version of the video to stdout. The new video
	15 with have the specified
	16 .I width
	17 and
	18 .IR height ,
	19 and will have the same length as the input video.
	20 The left-most pixels of the subvideo will be
	21 .I left
	22 pixels rightward of the left-most pixels of the
	23 input video. The top-most pixels of the subvideo
	24 will be
	25 .I top
	26 pixels downward of the top-most pixels of the
	27 input video.
	28 .P
	29 The selected subvideo may not extend beyond the
	30 input video.
	31 .SH OPTIONS
	32 .TP
	33 .B -s
	34 Instead of resizing the video, set alpha (and
	35 all colour parameters) to 0 on each pixel outside
	36 the selected region.
	37 .TP
	38 .B -S
	39 Instead of resizing the video, set alpha (and
	40 all colour parameters) to 0 on each pixel inside
	41 the selected region.
	42 .TP
	43 .B -t
	44 Instead of changing the width and height of
	45 the output video, put the subvideo side-by-side.
	46 The subvideo's left-most pixel will be positioned
	47 .I left
	48 pixels rightward of the output video's left-most pixel,
	49 and the subvideo's top-most pixel will be positioned
	50 .I top
	51 pixels downward of the output video's left-most pixel.
	52 .SH REQUIREMENTS
	53 .B blind-crop
	54 requires enough free memory to load two full frames into
	55 memory, one of the size of the source video's frames,
	56 and one of the size of the target video's frames. However,
	57 if
	58 .B -s
	59 or
	60 .B -S
	61 is used, only memory for one full frame, of the size of
	62 the source video's frames, are required. A frame requires
	63 32 bytes per pixel it contains.
	64 .B blind-crop
	65 has not been optimised for memory usage, but instead
	66 for code simplicity.
	67 .SH SEE ALSO
	68 .BR blind (7),
	69 .BR blind-extend (1),
	70 .BR blind-translate (1)
	71 .SH AUTHORS
	72 Mattias Andrée
	73 .RI < [email protected] >