diff --git a/doc/muxers.texi b/doc/muxers.texi index b8404c274c..05a0c302cf 100644 --- a/doc/muxers.texi +++ b/doc/muxers.texi @@ -2604,39 +2604,37 @@ specify the name of the '.Y' file. The muxer will automatically open the '.U' and '.V' files as required. @subsection Options - @table @option -@item frame_pts -If set to 1, expand the filename with pts from pkt->pts. +@item frame_pts @var{bool} +If set to 1, expand the filename with the packet PTS (presentation time stamp). Default value is 0. -@item start_number +@item start_number @var{count} Start the sequence from the specified number. Default value is 1. -@item update +@item update @var{bool} If set to 1, the filename will always be interpreted as just a filename, not a pattern, and the corresponding file will be continuously overwritten with new images. Default value is 0. -@item strftime +@item strftime @var{bool} If set to 1, expand the filename with date and time information from @code{strftime()}. Default value is 0. -@item atomic_writing +@item atomic_writing @var{bool} Write output to a temporary file, which is renamed to target filename once writing is completed. Default is disabled. @item protocol_opts @var{options_list} Set protocol options as a :-separated list of key=value parameters. Values containing the @code{:} special character must be escaped. - @end table @subsection Examples - -The following example shows how to use @command{ffmpeg} for creating a -sequence of files @file{img-001.jpeg}, @file{img-002.jpeg}, ..., -taking one image every second from the input video: +@itemize +@item +Use @command{ffmpeg} for creating a sequence of files @file{img-001.jpeg}, +@file{img-002.jpeg}, ..., taking one image every second from the input video: @example ffmpeg -i in.avi -vsync cfr -r 1 -f image2 'img-%03d.jpeg' @end example @@ -2656,27 +2654,29 @@ Note also that the pattern must not necessarily contain "%d" or ffmpeg -i in.avi -f image2 -frames:v 1 img.jpeg @end example +@item The @option{strftime} option allows you to expand the filename with date and time information. Check the documentation of the @code{strftime()} function for the syntax. -For example to generate image files from the @code{strftime()} -"%Y-%m-%d_%H-%M-%S" pattern, the following @command{ffmpeg} command -can be used: +To generate image files from the @code{strftime()} "%Y-%m-%d_%H-%M-%S" pattern, +the following @command{ffmpeg} command can be used: @example ffmpeg -f v4l2 -r 1 -i /dev/video0 -f image2 -strftime 1 "%Y-%m-%d_%H-%M-%S.jpg" @end example -You can set the file name with current frame's PTS: +@item +Set the file name with current frame's PTS: @example ffmpeg -f v4l2 -r 1 -i /dev/video0 -copyts -f image2 -frame_pts true %d.jpg @end example -A more complex example is to publish contents of your desktop directly to a -WebDAV server every second: +@item +Publish contents of your desktop directly to a WebDAV server every second: @example ffmpeg -f x11grab -framerate 1 -i :0.0 -q:v 6 -update 1 -protocol_opts method=PUT http://example.com/desktop.jpg @end example +@end itemize @section matroska