patched ffmpeg nov 2

source/patched-ffmpeg-mt/doc/filters.texi

Index: source/patched-ffmpeg-mt/doc/filters.texi
===================================================================
--- source/patched-ffmpeg-mt/doc/filters.texi	(revision 65184)
+++ source/patched-ffmpeg-mt/doc/filters.texi	(working copy)
@@ -190,6 +190,41 @@
 "crop=in_w/2:in_h/2:y:10+10*sin(n/10)"
 @end example
 
+@section cropdetect
+
+Auto-detect crop size.
+
+Calculate necessary cropping parameters and prints the recommended
+parameters through the logging system. The detected dimensions
+correspond to the non-black area of the input video.
+
+It accepts the syntax:
+@example
+cropdetect[=@var{limit}:@var{round}[:@var{reset}]]
+@end example
+
+@table @option
+
+@item limit
+Threshold, which can be optionally specified from nothing (0) to
+everything (255), defaults to 24.
+
+@item round
+Value which the width/height should be divisible by, defaults to
+16. The offset is automatically adjusted to center the video. Use 2 to
+get only even dimensions (needed for 4:2:2 video). 16 is best when
+encoding to most video codecs.
+
+@item reset
+Counter that determines after how many frames cropdetect will reset
+the previously detected largest video area and start over to detect
+the current optimal crop area. Defaults to 0.
+
+This can be useful when channel logos distort the video area. 0
+indicates never reset and return the largest area encountered during
+playback.
+@end table
+
 @section drawbox
 
 Draw a colored box on the input image.
@@ -428,6 +463,36 @@
 
 The default value of @var{width} and @var{height} is 0.
 
+@section settb
+
+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
+default timebase), and "intb" (the input timebase).
+
+The default value for the input is "intb".
+
+Follow some examples.
+
+@example
+# set the timebase to 1/25
+settb=1/25
+
+# set the timebase to 1/10
+settb=0.1
+
+#set the timebase to 1001/1000
+settb=1+0.001
+
+#set the timebase to 2*intb
+settb=2*intb
+
+#set the default timebase value
+settb=AVTB
+@end example
+
 @section slicify
 
 Pass the images of input video on to next video filter as multiple
@@ -443,6 +508,47 @@
 Adding this in the beginning of filter chains should make filtering
 faster due to better use of the memory cache.
 
+@section transpose
+
+Transpose rows with columns in the input video and optionally flip it.
+
+It accepts a parameter representing an integer, which can assume the
+values:
+
+@table @samp
+@item 0
+Rotate by 90 degrees counterclockwise and vertically flip (default), that is:
+@example
+L.R     L.l
+. . ->  . .
+l.r     R.r
+@end example
+
+@item 1
+Rotate by 90 degrees clockwise, that is:
+@example
+L.R     l.L
+. . ->  . .
+l.r     r.R
+@end example
+
+@item 2
+Rotate by 90 degrees counterclockwise, that is:
+@example
+L.R     R.r
+. . ->  . .
+l.r     L.l
+@end example
+
+@item 3
+Rotate by 90 degrees clockwise and vertically flip, that is:
+@example
+L.R     r.R
+. . ->  . .
+l.r     l.L
+@end example
+@end table
+
 @section unsharp
 
 Sharpen or blur the input video.
@@ -546,7 +652,7 @@
 through the interface defined in @file{libavfilter/vsrc_buffer.h}.
 
 It accepts the following parameters:
-@var{width}:@var{height}:@var{pix_fmt_string}
+@var{width}:@var{height}:@var{pix_fmt_string}:@var{timebase_num}:@var{timebase_den}
 
 All the parameters need to be explicitely defined.
 
@@ -558,24 +664,27 @@
 Specify the width and height of the buffered video frames.
 
 @item pix_fmt_string
-
 A string representing the pixel format of the buffered video frames.
 It may be a number corresponding to a pixel format, or a pixel format
 name.
 
+@item timebase_num, timebase_den
+Specify numerator and denomitor of the timebase assumed by the
+timestamps of the buffered frames.
 @end table
 
 For example:
 @example
-buffer=320:240:yuv410p
+buffer=320:240:yuv410p:1:24
 @end example
 
 will instruct the source to accept video frames with size 320x240 and
-with format "yuv410p". Since the pixel format with name "yuv410p"
-corresponds to the number 6 (check the enum PixelFormat definition in
-@file{libavutil/pixfmt.h}), this example corresponds to:
+with format "yuv410p" and assuming 1/24 as the timestamps timebase.
+Since the pixel format with name "yuv410p" corresponds to the number 6
+(check the enum PixelFormat definition in @file{libavutil/pixfmt.h}),
+this example corresponds to:
 @example
-buffer=320:240:6
+buffer=320:240:6:1:24
 @end example
 
 @section color
@@ -623,12 +732,16 @@
 template and to be employed in analysis / debugging tools.
 
 It accepts as optional parameter a string of the form
-@var{width}:@var{height}, where @var{width} and @var{height} specify the size of
-the configured source.
+@var{width}:@var{height}:@var{timebase}.
 
-The default values of @var{width} and @var{height} are respectively 352
-and 288 (corresponding to the CIF size format).
+@var{width} and @var{height} specify the size of the configured
+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",
+"AVTB" (the default timebase), and defaults to the value "AVTB".
+
 @c man end VIDEO SOURCES
 
 @chapter Video Sinks