href="ffmpeg-protocols.html#toc-subfile">3.33 subfile</a></h2>

<p>Virtually extract a segment of a file or another stream.
The underlying stream must be seekable.
</p>
<p>Accepted options:
</p><dl compact="compact">
<dt>&lsquo;<samp>start</samp>&rsquo;</dt>
<dd><p>Start offset of the extracted segment, in bytes.
</p></dd>
<dt>&lsquo;<samp>end</samp>&rsquo;</dt>
<dd><p>End offset of the extracted segment, in bytes.
If set to 0, extract till end of file.
</p></dd>
</dl>

<p>Examples:
</p>
<p>Extract a chapte