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vf_scale: eval, param0 and param1 documentation

Documentation of eval, param0 and param1 parameters

Signed-off-by: Bela Bodecs <bodecsb@vivanet.hu>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
tags/n3.0
Bela Bodecs Michael Niedermayer 9 years ago
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      doc/filters.texi
  2. +1
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      doc/scaler.texi

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doc/filters.texi View File

@@ -9954,6 +9954,21 @@ dimension is divisible by n and adjust the value if necessary.
See below for the list of accepted constants for use in the dimension
expression.

@item eval
Specify when to evaluate @var{width} and @var{height} expression. It accepts the following values:

@table @samp
@item init
Only evaluate expressions once during the filter initialization or when a command is processed.

@item frame
Evaluate expressions for each incoming frame.

@end table

Default value is @samp{init}.


@item interl
Set the interlacing mode. It accepts the following values:

@@ -9977,6 +9992,15 @@ Set libswscale scaling flags. See
complete list of values. If not explicitly specified the filter applies
the default flags.


@item param0, param1
Set libswscale input parameters for scaling algorithms that need them. See
@ref{sws_params,,the ffmpeg-scaler manual,ffmpeg-scaler} for the
complete documentation. If not explicitly specified the filter applies
empty parameters.



@item size, s
Set the video size. For the syntax of this option, check the
@ref{video size syntax,,"Video size" section in the ffmpeg-utils manual,ffmpeg-utils}.


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doc/scaler.texi View File

@@ -91,6 +91,7 @@ Select source range.
@item dst_range
Select destination range.

@anchor{sws_params}
@item param0, param1
Set scaling algorithm parameters. The specified values are specific of
some scaling algorithms and ignored by others. The specified values


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