It's supposed to be called only from (de)muxers.

This is a better io interrupt callback function, which has an
opaque parameter, which is given to the interrupt callback.

This allows callers to precisely cancel IO for one single
AVFormatContext, without interrupt other ones in the same
process.

Note, it's not needed in AVIOContext, at the moment.
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

It might make sense not to make the function completely mandatory
immediately at the next bump, which might be quite soon after
the function was introduced.
Signed-off-by: NMartin Storsjö <martin@martin.st>

Signed-off-by: NMartin Storsjö <martin@martin.st>

This fixes false positives of has_codec_delay_been_guessed() for
streams where not every input picture generates an output picture,
such as interlaced H264.

Specifically av_update_cur_dts(), av_seek_frame_binary() and
av_gen_search().

They are not supposed to be called outside lavf.

It's only used in avconv, so it properly belongs to OutputStream struct
there.

Deprecate AVFormatContext.preload.

It takes a codec parameter, thus enabling codec-specific defaults.

Deprecate AVFormatContext.mux_rate.

It's too unreliable to be useful. avio_size() should be called instead.

This will prevent seeking by bytes for formats that cannot handle this.

It allows to check if a given codec can be written into a container.

Signed-off-by: NAnton Khirnov <anton@khirnov.net>

Signed-off-by: NZohar Kelrich <lumimies@gmail.com>
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

It's replaced by 'creation_time' metadata tag.

It supports passing options to codecs.

Deprecate AVFormatContext.loop_output.

Deprecate AVFormatContext.loop_input.

AVStream is no place for it and it's unused outside of ffmpeg anyway.

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

Also include it into the doxygen documentation

convert the comment that documents the metadata API to use
the doxygen markup

It supports more convenient setting of AVOptions.