@@ -94,12 +94,13 @@ See also the @code{crc} muxer (@pxref{crc}).

 Image file muxer.

-This muxer writes video frames to multiple image files specified by a

-pattern.

+The image file muxer writes video frames to image files.

-The pattern may contain the string "%d" or "%0@var{N}d", which

+The output filenames are specified by a pattern, which can be used to

+produce sequentially numbered series of files.

+The pattern may contain the string "%d" or "%0@var{N}d", this string

 specifies the position of the characters representing a numbering in

-the filenames. If the form "%d0@var{N}d" is used, the string

+the filenames. If the form "%0@var{N}d" is used, the string

 representing the number in each filename is 0-padded to @var{N}

 digits. The literal character '%' can be specified in the pattern with

 the string "%%".