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 5f3d0906bd618f222653161d6012caae10258314..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.
@@ -1954,7 +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".
@@ -2442,7 +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