mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
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>
This commit is contained in:
parent
b0a90c2004
commit
551b9eb9ef
@ -9,7 +9,7 @@ example 'KB', 'MiB', 'G' and 'B' as postfix.
|
||||
Options which do not take arguments are boolean options, and set the
|
||||
corresponding value to true. They can be set to false by prefixing
|
||||
with "no" the option name, for example using "-nofoo" in the
|
||||
commandline will set to false the boolean option with name "foo".
|
||||
command line will set to false the boolean option with name "foo".
|
||||
|
||||
@section Stream specifiers
|
||||
Some options are applied per-stream, e.g. bitrate or codec. Stream specifiers
|
||||
|
@ -27,7 +27,7 @@ follows.
|
||||
|
||||
@section rawvideo
|
||||
|
||||
Rawvideo decoder.
|
||||
Raw video decoder.
|
||||
|
||||
This decoder decodes rawvideo streams.
|
||||
|
||||
|
@ -51,7 +51,7 @@ same for all the files in the sequence.
|
||||
|
||||
The following example shows how to use @file{ffmpeg} for creating a
|
||||
video from the images in the file sequence @file{img-001.jpeg},
|
||||
@file{img-002.jpeg}, ..., assuming an input framerate of 10 frames per
|
||||
@file{img-002.jpeg}, ..., assuming an input frame rate of 10 frames per
|
||||
second:
|
||||
@example
|
||||
ffmpeg -r 10 -f image2 -i 'img-%03d.jpeg' out.avi
|
||||
|
@ -1,7 +1,7 @@
|
||||
@chapter Expression Evaluation
|
||||
@c man begin EXPRESSION EVALUATION
|
||||
|
||||
When evaluating an arithemetic expression, FFmpeg uses an internal
|
||||
When evaluating an arithmetic expression, FFmpeg uses an internal
|
||||
formula evaluator, implemented through the @file{libavutil/eval.h}
|
||||
interface.
|
||||
|
||||
@ -53,7 +53,7 @@ returns the value stored in the internal variable.
|
||||
|
||||
@item ld(var)
|
||||
Allow to load the value of the internal variable with number
|
||||
@var{var}, which was previosly stored with st(@var{var}, @var{expr}).
|
||||
@var{var}, which was previously stored with st(@var{var}, @var{expr}).
|
||||
The function returns the loaded value.
|
||||
|
||||
@item while(cond, expr)
|
||||
@ -102,11 +102,11 @@ Return the greatest common divisor of @var{x} and @var{y}. If both @var{x} and
|
||||
The following constants are available:
|
||||
@table @option
|
||||
@item PI
|
||||
area of the unit disc, approximatively 3.14
|
||||
area of the unit disc, approximately 3.14
|
||||
@item E
|
||||
exp(1) (Euler's number), approximatively 2.718
|
||||
exp(1) (Euler's number), approximately 2.718
|
||||
@item PHI
|
||||
golden ratio (1+sqrt(5))/2, approximatively 1.618
|
||||
golden ratio (1+sqrt(5))/2, approximately 1.618
|
||||
@end table
|
||||
|
||||
Note that:
|
||||
|
@ -84,7 +84,7 @@ described.
|
||||
@table @option
|
||||
|
||||
@item -f @var{fmt} (@emph{input/output})
|
||||
Force input or output file format. The format is normally autodetected for input
|
||||
Force input or output file format. The format is normally auto detected for input
|
||||
files and guessed from file extension for output files, so this option is not
|
||||
needed in most cases.
|
||||
|
||||
@ -102,7 +102,7 @@ Do not overwrite output files but exit if file exists.
|
||||
Select an encoder (when used before an output file) or a decoder (when used
|
||||
before an input file) for one or more streams. @var{codec} is the name of a
|
||||
decoder/encoder or a special value @code{copy} (output only) to indicate that
|
||||
the stream is not to be reencoded.
|
||||
the stream is not to be re-encoded.
|
||||
|
||||
For example
|
||||
@example
|
||||
@ -449,7 +449,7 @@ and the following constants are available:
|
||||
@end table
|
||||
|
||||
@item -rc_override[:@var{stream_specifier}] @var{override} (@emph{output,per-stream})
|
||||
Rate control override for specific intervals, formated as "int,int,int"
|
||||
Rate control override for specific intervals, formatted as "int,int,int"
|
||||
list separated with slashes. Two first values are the beginning and
|
||||
end frame numbers, last one is quantizer to use if positive, or quality
|
||||
factor if negative.
|
||||
|
@ -439,7 +439,7 @@ aevalsrc=0
|
||||
|
||||
@item
|
||||
|
||||
Generate a sin signal with frequence of 440 Hz, set sample rate to
|
||||
Generate a sin signal with frequency of 440 Hz, set sample rate to
|
||||
8000 Hz:
|
||||
@example
|
||||
aevalsrc="sin(440*2*PI*t)::s=8000"
|
||||
@ -628,7 +628,7 @@ input plane. They are expressions, and can contain the following
|
||||
constants:
|
||||
@table @option
|
||||
@item w, h
|
||||
the input width and heigth in pixels
|
||||
the input width and height in pixels
|
||||
|
||||
@item cw, ch
|
||||
the input chroma image width and height in pixels
|
||||
@ -1089,7 +1089,7 @@ following constants:
|
||||
|
||||
@table @option
|
||||
@item w, h
|
||||
the input width and heigth
|
||||
the input width and height
|
||||
|
||||
@item tw, text_w
|
||||
the width of the rendered text
|
||||
@ -1367,7 +1367,7 @@ For more information see:
|
||||
@section gradfun
|
||||
|
||||
Fix the banding artifacts that are sometimes introduced into nearly flat
|
||||
regions by truncation to 8bit colordepth.
|
||||
regions by truncation to 8bit color depth.
|
||||
Interpolate the gradients that should go where the bands are, and
|
||||
dither them.
|
||||
|
||||
@ -1491,7 +1491,7 @@ The expressions can contain the following constants and functions:
|
||||
|
||||
@table @option
|
||||
@item w, h
|
||||
the input width and heigth
|
||||
the input width and height
|
||||
|
||||
@item val
|
||||
input value for the pixel component
|
||||
@ -1688,7 +1688,7 @@ The filter takes the parameters: @var{filter_name}@{:=@}@var{filter_params}.
|
||||
filter. If not specified the default values are assumed.
|
||||
|
||||
Refer to the official libopencv documentation for more precise
|
||||
informations:
|
||||
information:
|
||||
@url{http://opencv.willowgarage.com/documentation/c/image_filtering.html}
|
||||
|
||||
Follows the list of supported libopencv filters.
|
||||
@ -1704,7 +1704,7 @@ It accepts the parameters: @var{struct_el}:@var{nb_iterations}.
|
||||
@var{struct_el} represents a structuring element, and has the syntax:
|
||||
@var{cols}x@var{rows}+@var{anchor_x}x@var{anchor_y}/@var{shape}
|
||||
|
||||
@var{cols} and @var{rows} represent the number of colums and rows of
|
||||
@var{cols} and @var{rows} represent the number of columns and rows of
|
||||
the structuring element, @var{anchor_x} and @var{anchor_y} the anchor
|
||||
point, and @var{shape} the shape for the structuring element, and
|
||||
can be one of the values "rect", "cross", "ellipse", "custom".
|
||||
@ -1805,7 +1805,7 @@ The description of the accepted options follows.
|
||||
@table @option
|
||||
@item rgb
|
||||
If set to 1, force the filter to accept inputs in the RGB
|
||||
colorspace. Default value is 0.
|
||||
color space. Default value is 0.
|
||||
@end table
|
||||
|
||||
Be aware that frames are taken from each input video in timestamp
|
||||
@ -1892,7 +1892,7 @@ value for @var{width} or @var{height} is 0, the corresponding input size
|
||||
is used for the output.
|
||||
|
||||
The @var{width} expression can reference the value set by the
|
||||
@var{height} expression, and viceversa.
|
||||
@var{height} expression, and vice versa.
|
||||
|
||||
The default value of @var{width} and @var{height} is 0.
|
||||
|
||||
@ -1902,7 +1902,7 @@ Specify the offsets where to place the input image in the padded area
|
||||
with respect to the top/left border of the output image.
|
||||
|
||||
The @var{x} expression can reference the value set by the @var{y}
|
||||
expression, and viceversa.
|
||||
expression, and vice versa.
|
||||
|
||||
The default value of @var{x} and @var{y} is 0.
|
||||
|
||||
@ -2317,7 +2317,7 @@ seconds
|
||||
|
||||
@item pos
|
||||
position of the frame in the input stream, -1 if this information in
|
||||
unavailable and/or meanigless (for example in case of synthetic video)
|
||||
unavailable and/or meaningless (for example in case of synthetic video)
|
||||
|
||||
@item fmt
|
||||
pixel format name
|
||||
@ -2766,7 +2766,7 @@ section @ref{frei0r} in the description of the video filters.
|
||||
|
||||
Some examples follow:
|
||||
@example
|
||||
# generate a frei0r partik0l source with size 200x200 and framerate 10
|
||||
# generate a frei0r partik0l source with size 200x200 and frame rate 10
|
||||
# which is overlayed on the overlay filter main input
|
||||
frei0r_src=200x200:10:partik0l=1234 [overlay]; [in][overlay] overlay
|
||||
@end example
|
||||
@ -2792,7 +2792,7 @@ separated by ":". The description of the accepted options follows.
|
||||
|
||||
@item size, s
|
||||
Specify the size of the sourced video, it may be a string of the form
|
||||
@var{width}x@var{heigth}, or the name of a size abbreviation. The
|
||||
@var{width}x@var{height}, or the name of a size abbreviation. The
|
||||
default value is "320x240".
|
||||
|
||||
@item rate, r
|
||||
@ -2823,7 +2823,7 @@ testsrc=duration=5.3:size=qcif:rate=10
|
||||
@end example
|
||||
|
||||
will generate a video with a duration of 5.3 seconds, with size
|
||||
176x144 and a framerate of 10 frames per second.
|
||||
176x144 and a frame rate of 10 frames per second.
|
||||
|
||||
If the input content is to be ignored, @code{nullsrc} can be used. The
|
||||
following command generates noise in the luminance plane by employing
|
||||
|
@ -250,7 +250,7 @@ labelled by a unique string of the form "out@var{N}", where @var{N} is a
|
||||
number starting from 0 corresponding to the mapped input stream
|
||||
generated by the device.
|
||||
The first unlabelled output is automatically assigned to the "out0"
|
||||
label, but all the others need to be specified explicitely.
|
||||
label, but all the others need to be specified explicitly.
|
||||
|
||||
If not specified defaults to the filename specified for the input
|
||||
device.
|
||||
@ -515,12 +515,12 @@ kind @file{/dev/video@var{N}}, where @var{N} is a number associated to
|
||||
the device.
|
||||
|
||||
Video4Linux and Video4Linux2 devices only support a limited set of
|
||||
@var{width}x@var{height} sizes and framerates. You can check which are
|
||||
@var{width}x@var{height} sizes and frame rates. You can check which are
|
||||
supported for example with the command @file{dov4l} for Video4Linux
|
||||
devices and the command @file{v4l-info} for Video4Linux2 devices.
|
||||
|
||||
If the size for the device is set to 0x0, the input device will
|
||||
try to autodetect the size to use.
|
||||
try to auto-detect the size to use.
|
||||
Only for the video4linux2 device, if the frame rate is set to 0/0 the
|
||||
input device will use the frame rate value already set in the driver.
|
||||
|
||||
@ -537,10 +537,10 @@ tools.
|
||||
# to the default of 25/1.
|
||||
ffplay -s 320x240 -f video4linux /dev/video0
|
||||
|
||||
# Grab and show the input of a video4linux2 device, autoadjust size.
|
||||
# Grab and show the input of a video4linux2 device, auto-adjust size.
|
||||
ffplay -f video4linux2 /dev/video0
|
||||
|
||||
# Grab and record the input of a video4linux2 device, autoadjust size,
|
||||
# Grab and record the input of a video4linux2 device, auto-adjust size,
|
||||
# frame rate value defaults to 0/0 so it is read from the video4linux2
|
||||
# driver.
|
||||
ffmpeg -f video4linux2 -i /dev/video0 out.mpeg
|
||||
@ -570,7 +570,7 @@ The filename passed as input has the syntax:
|
||||
|
||||
@var{hostname}:@var{display_number}.@var{screen_number} specifies the
|
||||
X11 display name of the screen to grab from. @var{hostname} can be
|
||||
ommitted, and defaults to "localhost". The environment variable
|
||||
omitted, and defaults to "localhost". The environment variable
|
||||
@env{DISPLAY} contains the default display name.
|
||||
|
||||
@var{x_offset} and @var{y_offset} specify the offsets of the grabbed
|
||||
|
@ -28,7 +28,7 @@ OSS (Open Sound System) output device.
|
||||
|
||||
@section sdl
|
||||
|
||||
SDL (Simple Directmedia Layer) output device.
|
||||
SDL (Simple DirectMedia Layer) output device.
|
||||
|
||||
This output devices allows to show a video stream in an SDL
|
||||
window. Only one SDL window is allowed per application, so you can
|
||||
|
@ -155,8 +155,8 @@ be seekable, so they will fail with the pipe output protocol.
|
||||
|
||||
Real-Time Messaging Protocol.
|
||||
|
||||
The Real-Time Messaging Protocol (RTMP) is used for streaming multime‐
|
||||
dia content across a TCP/IP network.
|
||||
The Real-Time Messaging Protocol (RTMP) is used for streaming
|
||||
multimedia content across a TCP/IP network.
|
||||
|
||||
The required syntax is:
|
||||
@example
|
||||
@ -195,7 +195,7 @@ Real-Time Messaging Protocol and its variants supported through
|
||||
librtmp.
|
||||
|
||||
Requires the presence of the librtmp headers and library during
|
||||
configuration. You need to explicitely configure the build with
|
||||
configuration. You need to explicitly configure the build with
|
||||
"--enable-librtmp". If enabled this will replace the native RTMP
|
||||
protocol.
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user