docs: Spelling fixes to 9 texi files from /doc
credits to: Violet Lin (from Google Code-in) Signed-off-by: burek <burek021@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer
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@ -1,7 +1,7 @@
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@chapter Expression Evaluation
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@c man begin EXPRESSION EVALUATION
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When evaluating an arithemetic expression, FFmpeg uses an internal
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When evaluating an arithmetic expression, FFmpeg uses an internal
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formula evaluator, implemented through the @file{libavutil/eval.h}
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interface.
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@ -53,7 +53,7 @@ returns the value stored in the internal variable.
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@item ld(var)
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Allow to load the value of the internal variable with number
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@var{var}, which was previosly stored with st(@var{var}, @var{expr}).
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@var{var}, which was previously stored with st(@var{var}, @var{expr}).
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The function returns the loaded value.
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@item while(cond, expr)
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@ -102,11 +102,11 @@ Return the greatest common divisor of @var{x} and @var{y}. If both @var{x} and
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The following constants are available:
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@table @option
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@item PI
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area of the unit disc, approximatively 3.14
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area of the unit disc, approximately 3.14
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@item E
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exp(1) (Euler's number), approximatively 2.718
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exp(1) (Euler's number), approximately 2.718
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@item PHI
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golden ratio (1+sqrt(5))/2, approximatively 1.618
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golden ratio (1+sqrt(5))/2, approximately 1.618
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@end table
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Note that:
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@ -102,7 +102,7 @@ Do not overwrite output files but exit if file exists.
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Select an encoder (when used before an output file) or a decoder (when used
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before an input file) for one or more streams. @var{codec} is the name of a
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decoder/encoder or a special value @code{copy} (output only) to indicate that
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the stream is not to be reencoded.
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the stream is not to be re-encoded.
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For example
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@example
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@ -449,7 +449,7 @@ and the following constants are available:
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@end table
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@item -rc_override[:@var{stream_specifier}] @var{override} (@emph{output,per-stream})
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Rate control override for specific intervals, formated as "int,int,int"
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Rate control override for specific intervals, formatted as "int,int,int"
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list separated with slashes. Two first values are the beginning and
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end frame numbers, last one is quantizer to use if positive, or quality
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factor if negative.
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@ -439,7 +439,7 @@ aevalsrc=0
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@item
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Generate a sin signal with frequence of 440 Hz, set sample rate to
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Generate a sin signal with frequency of 440 Hz, set sample rate to
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8000 Hz:
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@example
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aevalsrc="sin(440*2*PI*t)::s=8000"
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@ -628,7 +628,7 @@ input plane. They are expressions, and can contain the following
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constants:
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@table @option
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@item w, h
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the input width and heigth in pixels
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the input width and height in pixels
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@item cw, ch
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the input chroma image width and height in pixels
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@ -1089,7 +1089,7 @@ following constants:
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@table @option
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@item w, h
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the input width and heigth
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the input width and height
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@item tw, text_w
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the width of the rendered text
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@ -1491,7 +1491,7 @@ The expressions can contain the following constants and functions:
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@table @option
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@item w, h
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the input width and heigth
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the input width and height
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@item val
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input value for the pixel component
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@ -1688,7 +1688,7 @@ The filter takes the parameters: @var{filter_name}@{:=@}@var{filter_params}.
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filter. If not specified the default values are assumed.
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Refer to the official libopencv documentation for more precise
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informations:
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information:
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@url{http://opencv.willowgarage.com/documentation/c/image_filtering.html}
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Follows the list of supported libopencv filters.
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@ -1704,7 +1704,7 @@ It accepts the parameters: @var{struct_el}:@var{nb_iterations}.
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@var{struct_el} represents a structuring element, and has the syntax:
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@var{cols}x@var{rows}+@var{anchor_x}x@var{anchor_y}/@var{shape}
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@var{cols} and @var{rows} represent the number of colums and rows of
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@var{cols} and @var{rows} represent the number of columns and rows of
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the structuring element, @var{anchor_x} and @var{anchor_y} the anchor
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point, and @var{shape} the shape for the structuring element, and
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can be one of the values "rect", "cross", "ellipse", "custom".
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@ -2317,7 +2317,7 @@ seconds
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@item pos
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position of the frame in the input stream, -1 if this information in
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unavailable and/or meanigless (for example in case of synthetic video)
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unavailable and/or meaningless (for example in case of synthetic video)
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@item fmt
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pixel format name
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@ -2792,7 +2792,7 @@ separated by ":". The description of the accepted options follows.
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@item size, s
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Specify the size of the sourced video, it may be a string of the form
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@var{width}x@var{heigth}, or the name of a size abbreviation. The
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@var{width}x@var{height}, or the name of a size abbreviation. The
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default value is "320x240".
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@item rate, r
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@ -250,7 +250,7 @@ labelled by a unique string of the form "out@var{N}", where @var{N} is a
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number starting from 0 corresponding to the mapped input stream
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generated by the device.
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The first unlabelled output is automatically assigned to the "out0"
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label, but all the others need to be specified explicitely.
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label, but all the others need to be specified explicitly.
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If not specified defaults to the filename specified for the input
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device.
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@ -520,7 +520,7 @@ supported for example with the command @file{dov4l} for Video4Linux
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devices and the command @file{v4l-info} for Video4Linux2 devices.
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If the size for the device is set to 0x0, the input device will
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try to autodetect the size to use.
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try to auto-detect the size to use.
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Only for the video4linux2 device, if the frame rate is set to 0/0 the
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input device will use the frame rate value already set in the driver.
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@ -537,10 +537,10 @@ tools.
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# to the default of 25/1.
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ffplay -s 320x240 -f video4linux /dev/video0
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# Grab and show the input of a video4linux2 device, autoadjust size.
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# Grab and show the input of a video4linux2 device, auto-adjust size.
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ffplay -f video4linux2 /dev/video0
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# Grab and record the input of a video4linux2 device, autoadjust size,
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# Grab and record the input of a video4linux2 device, auto-adjust size,
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# frame rate value defaults to 0/0 so it is read from the video4linux2
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# driver.
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ffmpeg -f video4linux2 -i /dev/video0 out.mpeg
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@ -570,7 +570,7 @@ The filename passed as input has the syntax:
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@var{hostname}:@var{display_number}.@var{screen_number} specifies the
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X11 display name of the screen to grab from. @var{hostname} can be
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ommitted, and defaults to "localhost". The environment variable
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omitted, and defaults to "localhost". The environment variable
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@env{DISPLAY} contains the default display name.
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@var{x_offset} and @var{y_offset} specify the offsets of the grabbed
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@ -28,7 +28,7 @@ OSS (Open Sound System) output device.
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@section sdl
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SDL (Simple Directmedia Layer) output device.
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SDL (Simple DirectMedia Layer) output device.
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This output devices allows to show a video stream in an SDL
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window. Only one SDL window is allowed per application, so you can
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@ -155,8 +155,8 @@ be seekable, so they will fail with the pipe output protocol.
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Real-Time Messaging Protocol.
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The Real-Time Messaging Protocol (RTMP) is used for streaming multime‐
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dia content across a TCP/IP network.
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The Real-Time Messaging Protocol (RTMP) is used for streaming
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multimedia content across a TCP/IP network.
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The required syntax is:
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@example
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@ -195,7 +195,7 @@ Real-Time Messaging Protocol and its variants supported through
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librtmp.
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Requires the presence of the librtmp headers and library during
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configuration. You need to explicitely configure the build with
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configuration. You need to explicitly configure the build with
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"--enable-librtmp". If enabled this will replace the native RTMP
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protocol.
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