add -muxers and -demuxers parameters to list the dexmuers and muxers

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Allows to list sources/sinks of the devices that implement
that functionality.

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

FFmpeg mix devices and file formats when -formats option is used.
This commit adds a -devices param to list devices only.

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket #3246.

Reviewed-by: Wei Gao <highgod0401@gmail.com>
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The output is formatted to display one option per line.

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

Quite useful for debugging.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

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

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

ffmpeg and ffplay use the loglevel as well as libpostproc, libswscale
and libswresample.

Also this makes the text shorter

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

The old implementation is no longer possibly due to limitations
of the new command line parser.

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

This reverts commit 841bf0ef.
This does not fully work as the file is used before the filename is parsed
so not all information is written in the specified file.

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

Extract of the output:

| Individual channels:
| NAME        DESCRIPTION
| FL          front left
| FR          front right
| <snip>
| SDR         surround direct right
|
| Standard channel layouts:
| NAME        DECOMPOSITION
| mono        FC
| stereo      FL+FR
| <snip>
| octagonal   FL+FR+FC+BL+BR+BC+SL+SR
| downmix     DL+DR

show_foo() functions are declared as void show_foo(void), but called as
int show_foo(const char*, const char*).

Make it print a list of AVCodecDescriptors.

Add new -decoders and -encoders options that print lists of decoders and
encoders respectively.

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

This allows globally forcing specific cpuflags (or lack thereof)
Useful for debugging and benchmarking

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

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

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

This saves a bit of typing.

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

Also document it and replace undocumented and inconsistent
'-sample_fmt list' syntax with -sample_fmts.

All option parsing functions now match the function pointer signature through
which they are called (int f(const char *, const char *), thereby working
reliably on all platforms.
Prefix all option processing functions with opt_

Make ff* tools only accept opt_* functions taking two arguments.

The distinction between functions with one and two arguments is quite
pointless. Simplify parse_options() code.

Make ff* tools only accept opt_* functions taking two arguments.

The distinction between functions with one and two arguments is quite
pointless. Simplify parse_options() code.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

formats.

Originally committed as revision 20909 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 20906 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

Originally committed as revision 20664 to svn://svn.ffmpeg.org/ffmpeg/trunk