This is required for extending lavfi tests to audio filtering.

Use av_get_pix_fmt_name() rather than access
av_pix_fmt_descriptors. Improve readability.

This fixes several warnings of the type:
warning: ignoring return value of ‘write’, declared with attribute warn_unused_result

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

$() is easier to nest and POSIX, which we require in other places.

patcheck hardcodes the binary names for grep/egrep. This makes overriding the
binary names a pain, e.g. when calling a GNU version of grep on BSD systems.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
(cherry picked from commit 009026ef)

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>

Originally committed as revision 26322 to svn://svn.ffmpeg.org/ffmpeg/trunk

The new name is shorter and more consistent with the FFmpeg API, and
sounds less evil.

Originally committed as revision 25707 to svn://svn.ffmpeg.org/ffmpeg/trunk

avfilter_graph_parse() declaration to libavfilter/avfiltergraph.h.

Simplify, and less confusing for the user.

Originally committed as revision 25705 to svn://svn.ffmpeg.org/ffmpeg/trunk

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

Originally committed as revision 25490 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25442 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25435 to svn://svn.ffmpeg.org/ffmpeg/trunk

container type and codecs in each file that point back to the file.

Originally committed as revision 25428 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25417 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24810 to svn://svn.ffmpeg.org/ffmpeg/trunk

AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name);
to:
int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);

This way it is possible to propagate an error code telling the reason
of the failure.

Originally committed as revision 24765 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24722 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24721 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24660 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24647 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24574 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Rafaël Carré, rafael d carre a gmail

Originally committed as revision 24499 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Rafaël Carré, rafael d carre a gmail

Originally committed as revision 24248 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23975 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Eli Friedman, eli dot friedman at gmail

Originally committed as revision 23841 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23672 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23578 to svn://svn.ffmpeg.org/ffmpeg/trunk

target regtest-lavfi_pix_fmts.

The lavfi_pix_fmts test is disabled, this because there are
many tests which are failing, and there are still some output files
which cannot be played by NUT/ffplay.

Originally committed as revision 23297 to svn://svn.ffmpeg.org/ffmpeg/trunk

If the atom size is 0, qt-faststart currently hangs forever while scanning
the file.

Originally committed as revision 23129 to svn://svn.ffmpeg.org/ffmpeg/trunk