Fixes issue 2317.

Patch by Rocky Cardwell, rocky d cardwell a lifespringschool d org

Originally committed as revision 25603 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25602 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25599 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25596 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25530 to svn://svn.ffmpeg.org/ffmpeg/trunk

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

and ffmpeg.c.

Originally committed as revision 25520 to svn://svn.ffmpeg.org/ffmpeg/trunk

-pad* options and more direct.

Originally committed as revision 25519 to svn://svn.ffmpeg.org/ffmpeg/trunk

Users are required to use the libavfilter crop filter.

Originally committed as revision 25518 to svn://svn.ffmpeg.org/ffmpeg/trunk

line count.

Originally committed as revision 25510 to svn://svn.ffmpeg.org/ffmpeg/trunk

Spotted by elenril on irc.

Originally committed as revision 25509 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25508 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Anton Khirnov  anton _at_ khirnov _dot_ net

Originally committed as revision 25503 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25502 to svn://svn.ffmpeg.org/ffmpeg/trunk

greatly simplifying its handling and reducing code duplication.

Patch by Nicolas George -bsf nicolas*george|normalesup+org.

Originally committed as revision 25501 to svn://svn.ffmpeg.org/ffmpeg/trunk

code flow, in the new_video_stream() / new_audio_stream() /
new_subtitle_stream() functions.

Patch by Nicolas George <$name.$surname@normalesup.org>.

Originally committed as revision 25500 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c.
Replace it with a more generic definition which can be shared.

Originally committed as revision 25453 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25451 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25431 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25418 to svn://svn.ffmpeg.org/ffmpeg/trunk

There was an off-by-one when addressing bitstream_filters[] in this situation.

Originally committed as revision 25398 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25384 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25377 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25358 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25329 to svn://svn.ffmpeg.org/ffmpeg/trunk

between ffmpeg and ffplay and avoids a valgrind error by freeing
avformat_opts->key.

Originally committed as revision 25309 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25304 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25303 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25302 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25301 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25300 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25299 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25298 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25297 to svn://svn.ffmpeg.org/ffmpeg/trunk

This avoids conflicts with the system assert.h.

Originally committed as revision 25284 to svn://svn.ffmpeg.org/ffmpeg/trunk

With this the developer can now choose if he wants an assert always enabled or at which
compile time assert level. This can thus replace the #define NDEBUG hacks

Originally committed as revision 25278 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25266 to svn://svn.ffmpeg.org/ffmpeg/trunk

Options are not yet set for video encoders and for codec specific
defaults it is desireable to set the codec options only after the codec
is known.

Originally committed as revision 25230 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

Originally committed as revision 25176 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25175 to svn://svn.ffmpeg.org/ffmpeg/trunk

which allows to specify only a subset of all the options to show.

Originally committed as revision 25166 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25149 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25144 to svn://svn.ffmpeg.org/ffmpeg/trunk

do_audio_out().

Originally committed as revision 25143 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25090 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24905 to svn://svn.ffmpeg.org/ffmpeg/trunk

consistency with input_video_filter.

Originally committed as revision 24904 to svn://svn.ffmpeg.org/ffmpeg/trunk

always -1.

Originally committed as revision 24903 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24894 to svn://svn.ffmpeg.org/ffmpeg/trunk