The option is useful to ensure that there is a seek point exactly at a
place the user will probably want to jump precisely sometime, the
major example would be the end of an opening and the beginning of a
chapter. The scene change detection system will often make it happen,
but not always for example if there is a fade-in.
See the thread:
Subject: [FFmpeg-devel] [PATCH] -force_key_frames option
Date: Tue, 12 Oct 2010 15:16:26 +0200
Patch by Nicolas George -mail nicolas,george,normalesup,org.
Originally committed as revision 25526 to svn://svn.ffmpeg.org/ffmpeg/trunk
Slightly more intuitive and required by a pending changes for making
the filter parametric.
Originally committed as revision 25184 to svn://svn.ffmpeg.org/ffmpeg/trunk
and update the manual page accordingly.
Based on a patch by John Calcote $(echo "<kpio.dbmdpuf@hnbjm.dpn>" | tr "b-za" "a-z").
Originally committed as revision 24049 to svn://svn.ffmpeg.org/ffmpeg/trunk
the options are deprecated and that -vf crop should be used instead.
Based on a patch by John Calcote $(echo "<j0hn.c4lc073@gm41l.c0m>" | tr "04731" "oatei").
Originally committed as revision 24036 to svn://svn.ffmpeg.org/ffmpeg/trunk
'(' and ')' are used instead of '{' and '}' in the date specification
as the latter confound the texinfo interpreter.
Originally committed as revision 23726 to svn://svn.ffmpeg.org/ffmpeg/trunk
them at the beginning of the file, for consistency with the final
ordering of the corresponding man pages.
Also create a separate @chapter for the "Options" section, as it is
done for the man pages, rather than merge it in the same section of
"Synopsis".
Originally committed as revision 23541 to svn://svn.ffmpeg.org/ffmpeg/trunk
Also replace "the HTML documentation of @file{ffmpeg}" with "the FFmpeg
HTML documentation", which is more generic.
Originally committed as revision 23444 to svn://svn.ffmpeg.org/ffmpeg/trunk
This makes the ordering of the sections in the file more consistent
with that of the final man output.
Originally committed as revision 23443 to svn://svn.ffmpeg.org/ffmpeg/trunk
command on its own line, and create a corresponding "TIPS" man page
section.
Note that such section is not displayed, as currently only sections
with pre-defined names are rendered.
Originally committed as revision 23409 to svn://svn.ffmpeg.org/ffmpeg/trunk
section, and make the whole rendered in the man output.
Simplify layout, and make it more consistent with that of the other
man pages. Also I cannot see a good reason for keeping split the two
sections.
Originally committed as revision 23407 to svn://svn.ffmpeg.org/ffmpeg/trunk
This is similar to existing -alang & -slang options.
Patch by Matthieu Crapet m${surname} ^ gmail com.
Originally committed as revision 20880 to svn://svn.ffmpeg.org/ffmpeg/trunk
filters.
Currently filters are not registered, so the option will show none.
Originally committed as revision 20807 to svn://svn.ffmpeg.org/ffmpeg/trunk
This fixes the warnings
** `Developers Guide' is up for `Coding Rules', but has no menu entry for this node
** `Invocation' is up for `FFmpeg formula evaluator', but has no menu entry for this node
Originally committed as revision 19831 to svn://svn.ffmpeg.org/ffmpeg/trunk
-author, -copyright, -track, -album, and -year options have been
dropped in favor of -metadata.
Originally committed as revision 19285 to svn://svn.ffmpeg.org/ffmpeg/trunk
