Deadlock

[clsid2]

There is a deadlock that sometimes occurs while unloading VSFilter. It happens when at same time SetupFRD function is called from inside the loop in CDirectVobSubFilter::ThreadProc().

Related commit, which only partially fixed it:
Cyberbeing/xy-VSFilter@d7ccef2

One solution would be to remove the lock inside the destructor CDirectVobSubFilter::~CDirectVobSubFilter()

To reproduce use MPC-HC with subtitle renderer set to VSFilter and a couple videos that don't have subtitles. Then quickly keep loading files (e.g. with PageUp/PageDown) and eventually it will hang.

[pinterf]

Just returned to the project, do you know whether this one was fixed already? Is it serious/really needs investigation?
Yes, i know, the project is between dead/half-dead.

[clsid2]

Nope, not fixed afaik. It was pretty easy to trigger if I remember correctly.