@item order, o
Set the filter order, can be 1 or 2. Default is 2.
+
+@item transform, a
+Set transform type of IIR filter.
+@table @option
+@item di
+@item dii
+@item tdii
+@end table
@end table
@subsection Commands
@item normalize, n
Normalize biquad coefficients, by default is disabled.
Enabling it will normalize magnitude response at DC to 0dB.
+
+@item transform, a
+Set transform type of IIR filter.
+@table @option
+@item di
+@item dii
+@item tdii
+@end table
@end table
@subsection Commands
@item normalize, n
Normalize biquad coefficients, by default is disabled.
Enabling it will normalize magnitude response at DC to 0dB.
+
+@item transform, a
+Set transform type of IIR filter.
+@table @option
+@item di
+@item dii
+@item tdii
+@end table
@end table
@subsection Commands
@item normalize, n
Normalize biquad coefficients, by default is disabled.
Enabling it will normalize magnitude response at DC to 0dB.
+
+@item transform, a
+Set transform type of IIR filter.
+@table @option
+@item di
+@item dii
+@item tdii
+@end table
@end table
@subsection Commands
@item normalize, n
Normalize biquad coefficients, by default is disabled.
Enabling it will normalize magnitude response at DC to 0dB.
+
+@item transform, a
+Set transform type of IIR filter.
+@table @option
+@item di
+@item dii
+@item tdii
+@end table
@end table
@section bs2b
@item normalize, n
Normalize biquad coefficients, by default is disabled.
Enabling it will normalize magnitude response at DC to 0dB.
+
+@item transform, a
+Set transform type of IIR filter.
+@table @option
+@item di
+@item dii
+@item tdii
+@end table
@end table
@subsection Examples
@item normalize, n
Normalize biquad coefficients, by default is disabled.
Enabling it will normalize magnitude response at DC to 0dB.
+
+@item transform, a
+Set transform type of IIR filter.
+@table @option
+@item di
+@item dii
+@item tdii
+@end table
@end table
@subsection Commands
@item normalize, n
Normalize biquad coefficients, by default is disabled.
Enabling it will normalize magnitude response at DC to 0dB.
+
+@item transform, a
+Set transform type of IIR filter.
+@table @option
+@item di
+@item dii
+@item tdii
+@end table
@end table
@subsection Examples
@item normalize, n
Normalize biquad coefficients, by default is disabled.
Enabling it will normalize magnitude response at DC to 0dB.
+
+@item transform, a
+Set transform type of IIR filter.
+@table @option
+@item di
+@item dii
+@item tdii
+@end table
@end table
@subsection Commands
@item nb_samples, n
Set the number of samples per requested frames.
+@item duration, d
+Set the duration of the sourced audio. See
+@ref{time duration syntax,,the Time duration section in the ffmpeg-utils(1) manual,ffmpeg-utils}
+for the accepted syntax.
+
+If not specified, or the expressed duration is negative, the audio is
+supposed to be generated forever.
@end table
@subsection Examples
movie=in_alpha.mkv [alpha]; [in][alpha] alphamerge [out]
@end example
-Since this filter is designed for reconstruction, it operates on frame
-sequences without considering timestamps, and terminates when either
-input reaches end of stream. This will cause problems if your encoding
-pipeline drops frames. If you're trying to apply an image as an
-overlay to a video stream, consider the @var{overlay} filter instead.
-
@section amplify
Amplify differences between current pixel and pixels of adjacent frames in
drawtext='fontfile=Linux Libertine O-40\:style=Semibold:text=FFmpeg'
@end example
+@item
+Draw "Test Text" with font size dependent on height of the video.
+@example
+drawtext="text='Test Text': fontsize=h/30: x=(w-text_w)/2: y=(h-text_h*2)"
+@end example
+
@item
Print the date of a real-time encoding (see strftime(3)):
@example
@item rate
Display video frame rate or sample rate in case of audio used by filter link.
+
+@item eof
+Display link output status.
@end table
@item rate, r
@item ecolor, ec
Set envelope color. Default is @code{gold}.
+
+@item slide
+Set slide mode.
+
+Available values for slide is:
+@table @samp
+@item frame
+Draw new frame when right border is reached.
+
+@item replace
+Replace old columns with new ones.
+
+@item scroll
+Scroll from right to left.
+
+@item rscroll
+Scroll from left to right.
+
+@item picture
+Draw single picture.
+@end table
+
+Default is @code{replace}.
@end table
@section threshold
If diagonal field of view is set it overrides horizontal and vertical field of view.
@end table
+
+@item octahedron
+Octahedron projection.
@end table
@item interp
@item gauss
@item gaussian
Gaussian interpolation.
+@item mitchell
+Mitchell interpolation.
@end table
Default value is @b{@samp{line}}.
@item vuslice
@item vdslice
@item hblur
+@item fadegrays
+@item wipetl
+@item wipetr
+@item wipebl
+@item wipebr
@end table
Default transition effect is fade.
@item seed
Set seed for picking gradient line points.
+
+@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}
+for the accepted syntax.
+
+If not specified, or the expressed duration is negative, the video is
+supposed to be generated forever.
+
+@item speed
+Set speed of gradients rotation.
@end table
If not specified, or the expressed duration is negative, the video is
supposed to be generated forever.
+Since the frame rate is used as time base, all frames including the last one
+will have their full duration. If the specified duration is not a multiple
+of the frame duration, it will be rounded up.
+
@item sar
Set the sample aspect ratio of the sourced video.