user18155: In FFmpeg Filters Documentation is the section 3 graph2dot is this about graph2dot program:

The graph2dot program included in the FFmpeg tools directory can be used to parse a filtergraph description and issue a corresponding textual representation in the dot language. 

I have FFmpeg from Zeranoe's build (Windows, 64-bit, static) and I have no tools directory. 
So I tried find this program by Google for downloading it but without success.
Is this part of the documentation obsolete or is it possible to obtain this program?

user1871: I maintain a Windows build of graph2dot and other tools at https://www.gyan.dev/ffmpeg/builds/. Look in the tools section.

user1760: I don't use Windows, but in Linux you can download the FFmpeg source, then:
cd ffmpeg
./configure
make
make tools/graph2dot

Then you can use it:
echo "nullsrc,scale=640:360,nullsink" | tools/graph2dot -o graph.tmp
dot -Tpng graph.tmp -o graph.png

Resulting in:

Not Windows specific, but maybe helpful for any Linux user who also wants to use this tool.

18155: <p>In FFmpeg Filters Documentation is the section <a href="http://ffmpeg.org/ffmpeg-filters.html#graph2dot" rel="noreferrer">3 graph2dot</a> is this about <code>graph2dot</code> program:</p>

<blockquote>
  <p>The graph2dot program included in the FFmpeg tools directory can be used to parse a filtergraph description and issue a corresponding textual representation in the dot language. </p>
</blockquote>

<p>I have FFmpeg from <a href="https://ffmpeg.zeranoe.com/builds/" rel="noreferrer">Zeranoe's build</a> (Windows, 64-bit, static) and I have no <code>tools</code> directory. </p>

<p>So I tried find this program by Google for downloading it but without success.</p>

<p>Is this part of the documentation <em>obsolete</em> or is it possible to obtain this program?</p>
 1871: <p>I maintain a Windows build of graph2dot and other tools at <a href="https://www.gyan.dev/ffmpeg/builds/" rel="nofollow noreferrer">https://www.gyan.dev/ffmpeg/builds/</a>. Look in the tools section.</p>
 1760: <p>I don't use Windows, but in Linux you can <a href="https://ffmpeg.org/download.html" rel="noreferrer">download</a> the FFmpeg source, then:</p>

<pre><code>cd ffmpeg
./configure
make
make tools/graph2dot
</code></pre>

<p>Then you can use it:</p>

<pre><code>echo "nullsrc,scale=640:360,nullsink" | tools/graph2dot -o graph.tmp
dot -Tpng graph.tmp -o graph.png
</code></pre>

<p>Resulting in:</p>

<p><a href="https://i.stack.imgur.com/Mrw71.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Mrw71.png" alt="enter image description here"></a></p>

<p>Not Windows specific, but maybe helpful for any Linux user who also wants to use this tool.</p>
