Do not warn about wrong channel layout if no channel layout is defined.

[ffmpeg] / doc / filters.texi

diff --git a/doc/filters.texi b/doc/filters.texi
index c643c06c3ee6e152318f16a56bb714a451a3ab25..bd15b5ead4db971ddb986bbfd9c120033798428b 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -477,10 +477,6 @@ Crop the input video to @var{out_w}:@var{out_h}:@var{x}:@var{y}.
 The parameters are expressions containing the following constants:
 
 @table @option
-@item E, PI, PHI
-the corresponding mathematical approximated values for e
-(euler number), pi (greek PI), PHI (golden ratio)
-
 @item x, y
 the computed values for @var{x} and @var{y}. They are evaluated for
 each new frame.
@@ -816,10 +812,6 @@ The parameters for @var{x} and @var{y} are expressions containing the
 following constants:
 
 @table @option
-@item E, PI, PHI
-the corresponding mathematical approximated values for e
-(euler number), pi (greek PI), PHI (golden ratio)
-
 @item w, h
 the input width and heigth
 
@@ -1159,10 +1151,14 @@ corresponding pixel component values.
 The @var{lut} filter requires either YUV or RGB pixel formats in
 input, and accepts the options:
 @table @option
-@var{c0} (first  pixel component)
-@var{c1} (second pixel component)
-@var{c2} (third  pixel component)
-@var{c3} (fourth pixel component, corresponds to the alpha component)
+@item c0
+first  pixel component
+@item c1
+second pixel component
+@item c2
+third  pixel component
+@item c3
+fourth pixel component, corresponds to the alpha component
 @end table
 
 The exact component associated to each option depends on the format in
@@ -1171,28 +1167,32 @@ input.
 The @var{lutrgb} filter requires RGB pixel formats in input, and
 accepts the options:
 @table @option
-@var{r} (red component)
-@var{g} (green component)
-@var{b} (blue component)
-@var{a} (alpha component)
+@item r
+red component
+@item g
+green component
+@item b
+blue component
+@item a
+alpha component
 @end table
 
 The @var{lutyuv} filter requires YUV pixel formats in input, and
 accepts the options:
 @table @option
-@var{y} (Y/luminance component)
-@var{u} (U/Cb component)
-@var{v} (V/Cr component)
-@var{a} (alpha component)
+@item y
+Y/luminance component
+@item u
+U/Cb component
+@item v
+V/Cr component
+@item a
+alpha component
 @end table
 
 The expressions can contain the following constants and functions:
 
 @table @option
-@item E, PI, PHI
-the corresponding mathematical approximated values for e
-(euler number), pi (greek PI), PHI (golden ratio)
-
 @item w, h
 the input width and heigth
 
@@ -1543,10 +1543,6 @@ The parameters @var{width}, @var{height}, @var{x}, and @var{y} are
 expressions containing the following constants:
 
 @table @option
-@item E, PI, PHI
-the corresponding mathematical approximated values for e
-(euler number), pi (greek PI), phi (golden ratio)
-
 @item in_w, in_h
 the input video width and height
 
@@ -1662,10 +1658,6 @@ The parameters @var{width} and @var{height} are expressions containing
 the following constants:
 
 @table @option
-@item E, PI, PHI
-the corresponding mathematical approximated values for e
-(euler number), pi (greek PI), phi (golden ratio)
-
 @item in_w, in_h
 the input width and height
 
@@ -1748,15 +1740,6 @@ is selected and passed to the output, otherwise it is discarded.
 The expression can contain the following constants:
 
 @table @option
-@item PI
-Greek PI
-
-@item PHI
-golden ratio
-
-@item E
-Euler number
-
 @item n
 the sequential number of the filtered frame, starting from 0
 
@@ -1895,15 +1878,6 @@ can contain the following constants:
 @item PTS
 the presentation timestamp in input
 
-@item PI
-Greek PI
-
-@item PHI
-golden ratio
-
-@item E
-Euler number
-
 @item N
 the count of the input frame, starting from 0.
 
@@ -1976,7 +1950,7 @@ Set the timebase to use for the output frames timestamps.
 It is mainly useful for testing timebase configuration.
 
 It accepts in input an arithmetic expression representing a rational.
-The expression can contain the constants "PI", "E", "PHI", "AVTB" (the
+The expression can contain the constants "AVTB" (the
 default timebase), and "intb" (the input timebase).
 
 The default value for the input is "intb".
@@ -2464,7 +2438,7 @@ source. The default values of @var{width} and @var{height} are
 respectively 352 and 288 (corresponding to the CIF size format).
 
 @var{timebase} specifies an arithmetic expression representing a
-timebase. The expression can contain the constants "PI", "E", "PHI",
+timebase. The expression can contain the constant
 "AVTB" (the default timebase), and defaults to the value "AVTB".
 
 @section frei0r_src