mirror of https://git.ffmpeg.org/ffmpeg.git
doc/filters: add mandelbrot source documentation
Address trac ticket #1492.
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@end itemize
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@end itemize
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@section mandelbrot
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Generate a Mandelbrot set fractal, and progressively zoom towards the
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point specified with @var{start_x} and @var{start_y}.
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This source accepts a list of options in the form of
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@var{key}=@var{value} pairs separated by ":". A description of the
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accepted options follows.
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@table @option
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@item end_pts
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Set the terminal pts value. Default value is 400.
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@item end_scale
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Set the terminal scale value.
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Must be a floating point value. Default value is 0.3.
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@item inner
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Set the inner coloring mode, that is the algorithm used to draw the
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Mandelbrot fractal internal region.
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It shall assume one of the following values:
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@table @option
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@item black
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Set black mode.
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@item conververgence
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Show time until convergence.
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@item mincol
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Set color based on point closest to the origin of the iterations.
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@item period
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Set period mode.
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@end table
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Default value is @var{mincol}.
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@item bailout
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Set the bailout value. Default value is 10.0.
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@item maxiter
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Set the maximum of iterations performed by the rendering
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algorithm. Default value is 7189.
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@item outer
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Set outer coloring mode.
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It shall assume one of following values:
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@table @option
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@item iteration_count
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Set iteration cound mode.
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@item normalized_iteration_count
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set normalized iteration count mode.
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@end table.
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Default value is @var{normalized_iteration_count}.
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@item rate, r
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Set frame rate, expressed as number of frames per second. Default
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value is "25".
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@item size, s
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Set frame size. Default value is "640x480".
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@item start_scale
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Set the initial scale value. Default value is 3.0.
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@item start_x
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Set the initial x position. Must be a floating point value between
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-100 and 100. Default value is -0.743643887037158704752191506114774.
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@item start_y
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Set the initial y position. Must be a floating point value between
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-100 and 100. Default value is -0.131825904205311970493132056385139.
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@end table
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@section mptestsrc
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@section mptestsrc
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Generate various test patterns, as generated by the MPlayer test filter.
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Generate various test patterns, as generated by the MPlayer test filter.
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