listed under AVFormatContext options for containers/devices and under
AVCodecContext options for codecs.
</p></dd>
<dt>&lsquo;<samp>private</samp>&rsquo;</dt>
<dd><p>These options are specific to the given container, device or codec. Private
options are listed under their corresponding containers/devices/codecs.
</p></dd>
</dl>

<p>For example to write an ID3v2.3 header instead of a default ID3v2.4 to
an MP3 file, use the &lsquo;<samp>id3v2_version</samp>&rsquo; private option of the MP3
muxer:
</p><div cla