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author | Stefano Sabatini <stefasab@gmail.com> | 2024-07-06 14:10:49 +0200 |
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committer | Stefano Sabatini <stefasab@gmail.com> | 2024-07-06 14:14:02 +0200 |
commit | 9c357324f0425fc7e04ec5593cf92d133fda21a9 (patch) | |
tree | 8feed76e090694ac314bc99d8d9a9cf44321ef9d | |
parent | f447189b0c8067edf54a16c8c6d5513b2de77276 (diff) | |
download | ffmpeg-9c357324f0425fc7e04ec5593cf92d133fda21a9.tar.gz |
doc/filters/perlin: specify default values
-rw-r--r-- | doc/filters.texi | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index c9c4f7cf6b..a43e4b8055 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -29306,28 +29306,30 @@ due to boulders in a generated terrain). Specify the size (width and height) of the buffered video frames. For the syntax of this option, check the @ref{video size syntax,,"Video size" section in the ffmpeg-utils manual,ffmpeg-utils}. +Default value is @code{320x240}. @item rate, r Specify the frame rate expected for the video stream, expressed as a -number of frames per second. +number of frames per second. Default value is @code{25}. @item octaves Specify the total number of components making up the noise, each one -with doubled frequency. +with doubled frequency. Default value is @code{1}. @item persistence Set the ratio used to compute the amplitude of the next octave -component with respect to the previous component amplitude. +component with respect to the previous component amplitude. Default +value is @code{1}. @item xscale @item yscale Define a scale factor used to multiple the x, y coordinates. This can be useful to define an effect with a pattern stretched along the x or -y axis. +y axis. Default value is @code{1}. @item tscale Define a scale factor used to multiple the time coordinate. This can -be useful to change the time variation speed. +be useful to change the time variation speed. Default value is @code{1}. @item random_mode Set random mode used to compute initial pattern. @@ -29346,9 +29348,11 @@ sources. Use the value specified by @option{random_seed} option. @end table +Default value is @code{random}. + @item random_seed, seed When @option{random_mode} is set to @var{random_seed}, use this value -to compute the initial pattern. +to compute the initial pattern. Default value is @code{0}. @end table @subsection Examples |