<p dir="auto">System Information:</p>
<ul dir="auto">
<li>OpenCV =&gt; 4.2</li>
<li>Operating System / Platform =&gt; Windows 7/ 32 Bit</li>
<li>Compiler =&gt; Visual Studio 2015</li>
</ul>
<h5 dir="auto">Detailed description</h5>
<p dir="auto">I am currently editing cap_ffmpeg_impl.hpp in modules/videoio/src and compiling the binaries. As FFMPEG is a 3rd party library it doesn't register changes in the cap_ffmpeg_impl.hpp and downloads the external binary(opencv_videoio_ffmpeg420.dll ) instead of compiling with the local files.</p>
<p dir="auto">What is the procedure for compiling with the source files?</p>
<h5 dir="auto">System information (version)</h5>

<ul dir="auto">
<li>OpenCV =&gt; 3.1.0</li>
<li>Operating System / Platform =&gt; Windows 7 64 Bit</li>
<li>Compiler =&gt; Visual Studio 2013</li>
</ul>
<h5 dir="auto">Detailed description</h5>

<h5 dir="auto">Steps to reproduce</h5>