avutil/opt: check return value of av_bprint_finalize()

[ffmpeg] / doc / filters.texi

diff --git a/doc/filters.texi b/doc/filters.texi
index 3c2dd2eb90add27957e7def35b33cbf6322edbeb..f17db3b986cfbee9e1581e840f1a2ca76fdb076f 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -9291,13 +9291,21 @@ TensorFlow backend. To enable this backend you
 need to install the TensorFlow for C library (see
 @url{https://www.tensorflow.org/install/install_c}) and configure FFmpeg with
 @code{--enable-libtensorflow}
+
+@item openvino
+OpenVINO backend. To enable this backend you
+need to build and install the OpenVINO for C library (see
+@url{https://github.com/openvinotoolkit/openvino/blob/master/build-instruction.md}) and configure FFmpeg with
+@code{--enable-libopenvino} (--extra-cflags=-I... --extra-ldflags=-L... might
+be needed if the header files and libraries are not installed into system path)
+
 @end table
 
 Default value is @samp{native}.
 
 @item model
 Set path to model file specifying network architecture and its parameters.
-Note that different backends use different file formats. TensorFlow and native
+Note that different backends use different file formats. TensorFlow, OpenVINO and native
 backend can load files for only its format.
 
 Native model file (.model) can be generated from TensorFlow model file (.pb) by using tools/python/convert.py
@@ -17980,7 +17988,7 @@ subtitles=video.mkv:si=1
 To make the subtitles stream from @file{sub.srt} appear in 80% transparent blue
 @code{DejaVu Serif}, use:
 @example
-subtitles=sub.srt:force_style='FontName=DejaVu Serif,PrimaryColour=&HCCFF0000'
+subtitles=sub.srt:force_style='Fontname=DejaVu Serif,PrimaryColour=&HCCFF0000'
 @end example
 
 @section super2xsai
@@ -20782,6 +20790,12 @@ Input frame count.
 @item on
 Output frame count.
 
+@item in_time, it
+The input timestamp expressed in seconds. It's NAN if the input timestamp is unknown.
+
+@item out_time, time, ot
+The output timestamp expressed in seconds.
+
 @item x
 @item y
 Last calculated 'x' and 'y' position from 'x' and 'y' expression
@@ -20820,13 +20834,13 @@ display aspect ratio
 
 @itemize
 @item
-Zoom-in up to 1.5 and pan at same time to some spot near center of picture:
+Zoom in up to 1.5x and pan at same time to some spot near center of picture:
 @example
 zoompan=z='min(zoom+0.0015,1.5)':d=700:x='if(gte(zoom,1.5),x,x+1/a)':y='if(gte(zoom,1.5),y,y+1)':s=640x360
 @end example
 
 @item
-Zoom-in up to 1.5 and pan always at center of picture:
+Zoom in up to 1.5x and pan always at center of picture:
 @example
 zoompan=z='min(zoom+0.0015,1.5)':d=700:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)'
 @end example
@@ -20836,6 +20850,13 @@ Same as above but without pausing:
 @example
 zoompan=z='min(max(zoom,pzoom)+0.0015,1.5)':d=1:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)'
 @end example
+
+@item
+Zoom in 2x into center of picture only for the first second of the input video:
+@example
+zoompan=z='if(between(in_time,0,1),2,1)':d=1:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)'
+@end example
+
 @end itemize
 
 @anchor{zscale}