ffmpeg | branch: master | Lou Logan <l...@lrcd.com> | Mon Dec 11 12:46:02 2017 -0900| [555119bd762540a9f17a61bdd92329c8b8feb1e0] | committer: Lou Logan
doc/filters: re-arrange options for testsrc family Additionally: * Mention that allrgb and allyuv do not support the "size" option. * Separate examples into subsection. Fixes ticket #6906. Signed-off-by: Lou Logan <l...@lrcd.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=555119bd762540a9f17a61bdd92329c8b8feb1e0 --- doc/filters.texi | 44 +++++++++++++++++++++++++------------------- 1 file changed, 25 insertions(+), 19 deletions(-) diff --git a/doc/filters.texi b/doc/filters.texi index 3346438231..f304bbf949 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -17099,28 +17099,24 @@ The sources accept the following parameters: @table @option -@item alpha -Specify the alpha (opacity) of the background, only available in the -@code{testsrc2} source. The value must be between 0 (fully transparent) and -255 (fully opaque, the default). - -@item color, c -Specify the color of the source, only available in the @code{color} -source. For the syntax of this option, check the "Color" section in the -ffmpeg-utils manual. - @item level Specify the level of the Hald CLUT, only available in the @code{haldclutsrc} source. A level of @code{N} generates a picture of @code{N*N*N} by @code{N*N*N} pixels to be used as identity matrix for 3D lookup tables. Each component is coded on a @code{1/(N*N)} scale. +@item color, c +Specify the color of the source, only available in the @code{color} +source. For the syntax of this option, check the "Color" section in the +ffmpeg-utils manual. + @item size, s Specify the size of the sourced video. For the syntax of this option, check the @ref{video size syntax,,"Video size" section in the ffmpeg-utils manual,ffmpeg-utils}. The default value is @code{320x240}. -This option is not available with the @code{haldclutsrc} filter. +This option is not available with the @code{allrgb}, @code{allyuv}, and +@code{haldclutsrc} filters. @item rate, r Specify the frame rate of the sourced video, as the number of frames @@ -17129,9 +17125,6 @@ generated per second. It has to be a string in the format number or a valid video frame rate abbreviation. The default value is "25". -@item sar -Set the sample aspect ratio of the sourced video. - @item duration, d Set the duration of the sourced video. See @ref{time duration syntax,,the Time duration section in the ffmpeg-utils(1) manual,ffmpeg-utils} @@ -17140,6 +17133,14 @@ for the accepted syntax. If not specified, or the expressed duration is negative, the video is supposed to be generated forever. +@item sar +Set the sample aspect ratio of the sourced video. + +@item alpha +Specify the alpha (opacity) of the background, only available in the +@code{testsrc2} source. The value must be between 0 (fully transparent) and +255 (fully opaque, the default). + @item decimals, n Set the number of decimals to show in the timestamp, only available in the @code{testsrc} source. @@ -17149,27 +17150,32 @@ timestamp value multiplied by the power of 10 of the specified value. Default value is 0. @end table -For example the following: +@subsection Examples + +@itemize +@item +Generate a video with a duration of 5.3 seconds, with size +176x144 and a frame rate of 10 frames per second: @example 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 frame rate of 10 frames per second. - +@item The following graph description will generate a red source with an opacity of 0.2, with size "qcif" and a frame rate of 10 -frames per second. +frames per second: @example color=c=red@@0.2:s=qcif:r=10 @end example +@item If the input content is to be ignored, @code{nullsrc} can be used. The following command generates noise in the luminance plane by employing the @code{geq} filter: @example nullsrc=s=256x256, geq=random(1)*255:128:128 @end example +@end itemize @subsection Commands _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
