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doc/filters: align order of fps filter options to implementation

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Align order of "start_time" option within fps filter documentation to actual
implementation. Also fix some documentation cosmetics.

Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com>
This commit is contained in:
Tobias Rapp 2017-10-05 10:14:26 +02:00
parent e01a270762
commit 4f5fb78134
1 changed files with 11 additions and 11 deletions
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doc/filters.texi
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@ -8669,13 +8669,21 @@ It accepts the following parameters:
@item fps
The desired output frame rate. The default is @code{25}.
@item start_time
Assume the first PTS should be the given value, in seconds. This allows for
padding/trimming at the start of stream. By default, no assumption is made
about the first frame's expected PTS, so no padding or trimming is done.
For example, this could be set to 0 to pad the beginning with duplicates of
the first frame if a video stream starts after the audio stream or to trim any
frames with a negative PTS.
@item round
Rounding method.
Timestamp (PTS) rounding method.
Possible values are:
@table @option
@item zero
zero round towards 0
round towards 0
@item inf
round away from 0
@item down
@ -8687,18 +8695,10 @@ round to nearest
@end table
The default is @code{near}.
@item start_time
Assume the first PTS should be the given value, in seconds. This allows for
padding/trimming at the start of stream. By default, no assumption is made
about the first frame's expected PTS, so no padding or trimming is done.
For example, this could be set to 0 to pad the beginning with duplicates of
the first frame if a video stream starts after the audio stream or to trim any
frames with a negative PTS.
@end table
Alternatively, the options can be specified as a flat string:
@var{fps}[:@var{round}].
@var{fps}[:@var{start_time}[:@var{round}]].
See also the @ref{setpts} filter.