[FFmpeg-devel] [PATCH 3/3] doc/filters: move scattered remark on av_strtod to a common location

Ganesh Ajjanagadde gajjanagadde at gmail.com
Sun Nov 1 17:57:55 CET 2015

All filters now use av_strtod for accepting floating point parameters.
There was an isolated remark on this, but the point applies generally

This moves the comment and suitably elaborates on it for additional
clarity. A link to the code for av_strtod is also provided for the
user's benefit.

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde at gmail.com>
 doc/filters.texi | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/doc/filters.texi b/doc/filters.texi
index 15ea77a..0a20531 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -45,7 +45,11 @@ lower half the output generated by the @var{crop,vflip} filterchain.
 Some filters take in input a list of parameters: they are specified
 after the filter name and an equal sign, and are separated from each other
-by a colon.
+by a colon. Floating point parameters may all accept an optional IS postfix,
+e.g 'K', 'M', 'G' for Kilo, Mega, Giga. If 'i' is appended after the postfix,
+powers of 2 are used instead of powers of 10. The 'B' postfix multiplies the
+value by 8, and can be appended after another postfix or used alone. See also
+ at code{av_strtod}.
 There exist so-called @var{source filters} that do not have an
 audio/video input, and @var{sink filters} that will not have audio/video
@@ -14371,9 +14375,7 @@ format is guessed from @var{movie_name} or by probing.
 @item seek_point, sp
 Specifies the seek point in seconds. The frames will be output
-starting from this seek point. The parameter is evaluated with
- at code{av_strtod}, so the numerical value may be suffixed by an IS
-postfix. The default value is "0".
+starting from this seek point. The default value is "0".
 @item streams, s
 Specifies the streams to read. Several streams can be specified,

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