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doc/filters: move *setpts and *settb filters to the multimedia filters section
Since audio and video filters are explained together and share most code, the multimedia filters section seems more fitting.
This commit is contained in:
Stefano Sabatini
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0043db2967
200
doc/filters.texi
200
doc/filters.texi
@ -3179,106 +3179,6 @@ Mark the frame as top-field-first.
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Mark the frame as progressive.
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@end table
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@section asetpts, setpts
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Change the PTS (presentation timestamp) of the input frames.
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@code{asetpts} works on audio frames, @code{setpts} on video frames.
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Accept in input an expression evaluated through the eval API, which
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can contain the following constants:
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@table @option
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@item PTS
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the presentation timestamp in input
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@item N
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the count of the input frame, starting from 0.
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@item NB_CONSUMED_SAMPLES
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the number of consumed samples, not including the current frame (only
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audio)
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@item NB_SAMPLES
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the number of samples in the current frame (only audio)
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@item SAMPLE_RATE
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audio sample rate
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@item STARTPTS
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the PTS of the first video frame
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@item INTERLACED
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tell if the current frame is interlaced
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@item TB
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the time base
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@item POS
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original position in the file of the frame, or undefined if undefined
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for the current frame
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@item PREV_INPTS
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previous input PTS
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@item PREV_OUTPTS
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previous output PTS
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@end table
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Some examples follow:
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@example
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# start counting PTS from zero
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setpts=PTS-STARTPTS
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# fast motion
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setpts=0.5*PTS
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# slow motion
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setpts=2.0*PTS
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# fixed rate 25 fps
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setpts=N/(25*TB)
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# fixed rate 25 fps with some jitter
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setpts='1/(25*TB) * (N + 0.05 * sin(N*2*PI/25))'
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# apply an offset of 10 seconds to the input PTS
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setpts=PTS+10/TB
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@end example
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@section settb, asettb
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Set the timebase to use for the output frames timestamps.
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It is mainly useful for testing timebase configuration.
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It accepts in input an arithmetic expression representing a rational.
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The expression can contain the constants "AVTB" (the
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default timebase), "intb" (the input timebase) and "sr" (the sample rate,
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audio only).
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The default value for the input is "intb".
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Follow some examples.
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@example
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# set the timebase to 1/25
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settb=1/25
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# set the timebase to 1/10
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settb=0.1
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#set the timebase to 1001/1000
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settb=1+0.001
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#set the timebase to 2*intb
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settb=2*intb
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#set the default timebase value
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settb=AVTB
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@end example
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@section showinfo
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Show a line containing various information for each input video frame.
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@ -4200,6 +4100,106 @@ tools.
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Below is a description of the currently available multimedia filters.
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@section asetpts, setpts
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Change the PTS (presentation timestamp) of the input frames.
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@code{asetpts} works on audio frames, @code{setpts} on video frames.
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Accept in input an expression evaluated through the eval API, which
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can contain the following constants:
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@table @option
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@item PTS
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the presentation timestamp in input
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@item N
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the count of the input frame, starting from 0.
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@item NB_CONSUMED_SAMPLES
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the number of consumed samples, not including the current frame (only
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audio)
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@item NB_SAMPLES
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the number of samples in the current frame (only audio)
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@item SAMPLE_RATE
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audio sample rate
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@item STARTPTS
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the PTS of the first frame
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@item INTERLACED
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tell if the current frame is interlaced
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@item TB
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the time base
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@item POS
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original position in the file of the frame, or undefined if undefined
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for the current frame
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@item PREV_INPTS
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previous input PTS
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@item PREV_OUTPTS
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previous output PTS
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@end table
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Some examples follow:
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@example
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# start counting PTS from zero
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setpts=PTS-STARTPTS
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# fast motion
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setpts=0.5*PTS
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# slow motion
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setpts=2.0*PTS
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# fixed rate 25 fps
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setpts=N/(25*TB)
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# fixed rate 25 fps with some jitter
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setpts='1/(25*TB) * (N + 0.05 * sin(N*2*PI/25))'
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# apply an offset of 10 seconds to the input PTS
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setpts=PTS+10/TB
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@end example
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@section settb, asettb
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Set the timebase to use for the output frames timestamps.
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It is mainly useful for testing timebase configuration.
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It accepts in input an arithmetic expression representing a rational.
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The expression can contain the constants "AVTB" (the
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default timebase), "intb" (the input timebase) and "sr" (the sample rate,
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audio only).
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The default value for the input is "intb".
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Follow some examples.
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@example
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# set the timebase to 1/25
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settb=1/25
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# set the timebase to 1/10
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settb=0.1
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#set the timebase to 1001/1000
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settb=1+0.001
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#set the timebase to 2*intb
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settb=2*intb
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#set the default timebase value
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settb=AVTB
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@end example
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@section concat
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Concatenate audio and video streams, joining them together one after the
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