Free packets unconditionally after demuxing, and not only when the
packets belong to a given stream.
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Update the video filtering example program based on the audio one.
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

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

The filtering_audio.c example needs to be updated for the new
"abuffer" filter args.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Note: the condition looked wrong in the first place ("if DTS is not
defined, then set PTS to that undefined value [...]").

Avoid some memleaks.

All the other examples already use the system installed headers.

These rules are already in gmake builtins.

The planar/packed switch and the packing_formats list is no longer
required, since the planar/packed information is now stored in the sample
format enum.

This is technically a major API break, possibly it should be not too
painful as we marked the audio filtering API as unstable.

It is required for audio filtering.

The header is required for the sin() function.

These two examples use the sin() function.

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

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

Decode errors can happen with concatenated MP3s
with different formats.

Remove unused variable size from video_encode_example() function.

Fix GCC warning:
decoding_encoding.c:214:22: warning: unused variable ‘size’ [-Wunused-variable]

This should be converted to the new API
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Mostly based on doc/examples/filtering.c. lavfi API is still limited to
"buffer feeding" instead of "frame feeding" at the moment, so this
example code sticks with it.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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