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Amend documentation for the image2 demuxer, to better reflect the current behavior.

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Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 10ed96c78f)
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Stefano Sabatini 2011-01-21 13:54:14 +01:00 committed by Michael Niedermayer
parent 22f73157b7
commit e6d4019503
1 changed files with 13 additions and 8 deletions
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21
doc/demuxers.texi
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@ -24,20 +24,18 @@ Image file demuxer.
This demuxer reads from a list of image files specified by a pattern.
The filename of each file to read must contain a sequential number,
which specifies the position of the file in the sequence.
The pattern must contain the string "%d" or "%0@var{N}d", which
specifies the position of the characters representing the seqential
The pattern may contain the string "%d" or "%0@var{N}d", which
specifies the position of the characters representing a sequential
number in each filename matched by the pattern. If the form
"%d0@var{N}d" is used, the string representing the number in each
filename is 0-padded and @var{N} is the total number of 0-padded
digits representing the number. The literal character '%' can be
specified in the pattern with the string "%%".
The first filename of the file sequence specified by the pattern must
contain a number inclusively contained between 0 and 4, all the
following numbers must be sequential.
If the pattern contains "%d" or "%0@var{N}d", the first filename of
the file list specified by the pattern must contain a number
inclusively contained between 0 and 4, all the following numbers must
be sequential. This limitation may be hopefully fixed.
The pattern may contain a suffix which is used to automatically
determine the format of the images contained in the files.
@ -59,4 +57,11 @@ second:
ffmpeg -r 10 -f image2 -i 'img-%03d.jpeg' out.avi
@end example
Note that the pattern must not necessarily contain "%d" or
"%0@var{N}d", for example to convert a single image file
@file{img.jpeg} you can employ the command:
@example
ffmpeg -f image2 -i img.jpeg img.png
@end example
@c man end INPUT DEVICES