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doc/muxers/image2: document strftime option

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Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
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Ramiro Polla 2014-01-08 02:49:42 -02:00 committed by Stefano Sabatini
parent db70f2d36c
commit 6a99ecb84e
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doc/muxers.texi
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@ -314,6 +314,17 @@ Note also that the pattern must not necessarily contain "%d" or
ffmpeg -i in.avi -f image2 -frames:v 1 img.jpeg
@end example
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:
@example
ffmpeg -f v4l2 -r 1 -i /dev/video0 -f image2 -strftime 1 "%Y-%m-%d_%H-%M-%S.jpg"
@end example
@table @option
@item start_number @var{number}
Start the sequence from @var{number}. Default value is 1. Must be a
@ -324,6 +335,9 @@ If @var{number} is nonzero, the filename will always be interpreted as just a
filename, not a pattern, and this file will be continuously overwritten with new
images.
@item strftime @var{[0|1]}
If set to 1, expand the filename with date and time information from
@code{strftime()}. Default value is 0.
@end table
The image muxer supports the .Y.U.V image file format. This format is