Manually kill encoder graph due to encoder issue
Manually kill encoder graph due to encoder issue

According to DirectShow documentation, the graph itself is supposed to
automatically handle removing/releasing filters when the graph is
destroyed, but for some reason if you don't manually shut down the
graph, the encoder will not actually deactivate, and will not be usable
again until the program is shut down.

upsoft/libdshowcapture,ChristianFrisson/libdshowcapture,jp9000/libdshowcapture,jp9000/libdshowcapture