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img2 encoder: use more descriptive vsync names

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Signed-off-by: rogerdpack <rogerpack2005@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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rogerdpack 2016-10-25 18:33:30 -06:00 committed by Michael Niedermayer
parent 1a956c64c8
commit 8459e6fd12
1 changed files with 3 additions and 3 deletions
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6
doc/muxers.texi
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@ -641,7 +641,7 @@ 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:
@example
ffmpeg -i in.avi -vsync 1 -r 1 -f image2 'img-%03d.jpeg'
ffmpeg -i in.avi -vsync cfr -r 1 -f image2 'img-%03d.jpeg'
@end example
Note that with @command{ffmpeg}, if the format is not specified with the
@ -649,12 +649,12 @@ Note that with @command{ffmpeg}, if the format is not specified with the
format, the image2 muxer is automatically selected, so the previous
command can be written as:
@example
ffmpeg -i in.avi -vsync 1 -r 1 'img-%03d.jpeg'
ffmpeg -i in.avi -vsync cfr -r 1 'img-%03d.jpeg'
@end example
Note also that the pattern must not necessarily contain "%d" or
"%0@var{N}d", for example to create a single image file
@file{img.jpeg} from the input video you can employ the command:
@file{img.jpeg} from the start of the input video you can employ the command:
@example
ffmpeg -i in.avi -f image2 -frames:v 1 img.jpeg
@end example