This is required to build with FFmpeg compilation options.

This codepath is not implemented and just crashes, also its simpler
without special cases, which makes sense for an example

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: Anton Khirnov <anton@khirnov.net>

This includes moving libavformat/output-example to doc/examples/output.

avcodec_close() does nothing in case the argument is NULL. Simplify.

That example shows how the decoding process works, not only the
demuxing.

Fix infinite loop at flushing.

It uses at least sin()

"into the doc/examples directory" vs "into doc/examples".

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

Adjust the code so that a working ffplay command is printed in the
planar audio case.

There is no reason why this should copy the audio data in a very
complicated way. Also, strictly write the first plane, instead of
writing the whole buffer. This is more helpful in context of the
example. This way a user can clearly confirm that it works by playing
the written data as raw audio.

This assumes one audio packet is decoded one time. This is not true:
packets can be partially decoded. Then you have to "adjust" the packet
and pass the undecoded part of the packet to the decode function again.

Allows to encode to output in case the destination sample format is
different from AV_SAMPLE_FMT_S16.

Add function avfilter_graph_parse_ptr() and favor it in place of
avfilter_graph_parse(), which will be restored with the old/Libav
signature at the next bump.

If HAVE_INCOMPATIBLE_LIBAV_API is enabled it will use the
Libav-compatible signature for avfilter_graph_parse().

At the next major bump the current implementation of
avfilter_graph_parse() should be dropped in favor of the Libav/old
implementation.

Should address trac ticket #2672.

The new name is less confusing, since the variables represent times
rather than timestamps.

There is no much point in optimizing example code, and the -O2 flag is
annoying when debugging.

Simpler and less confusing.

The frame is not used after being added to the filter
graph, there is no need to keep the reference.

AVABufferSinkParams are ignored by avfilter_graph_create_filter,
therefore the example is misleading.  Use av_opt_set_int_list to
configure abuffersink directly.

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

Fixes accessing freed memory

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

This filter is not required anymore with aformat. Drop it at next bump.

Simplify.

In particular, fix crash.

In particular, fix crash.

Do not re-call avcodec_get_context_defaults3(), it is already
called by avformat_new_stream() and it leaks the codec
priv_data that was already allocated.

Use avformat_free_context() instead of freeing (not)
everything manually.

Fix trac ticket #2322.

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

The size of the AVFrame structure is not part of the ABI;
it can grow with later versions. Therefore, applications
are not supposed to allocate AVFrame directly, they are
supposed to use avcodec_alloc_frame() instead.

Fix leak.

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

Illustrate the use of return values, av_err2str and
avcodec_get_name.

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

s/video/audio/ in a log message.

Implement more logical code flow.

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

Allow to factorize code in video_decode_example(), simplify.