致命错误，Application Crashing Events

[singsong2016]

长时间多次运行录像功能，每次停止录像后，资源不会释放，内存泄漏，最后软件闪退，windows系统日志如下：
另外，release后，再重新init，再调用openstream也会出现致命错误。
软件退出：The program '[8012] WindowsFormsAppNetFrm.exe' has exited with code 3221225477 (0xc0000005) 'Access violation'.

Faulting application name: VotSystem.exe, version: 1.0.0.0, time stamp: 0xff7720ad
Faulting module name: VCRUNTIME140D.dll, version: 14.0.24215.1, time stamp: 0x57bfd584
Exception code: 0xc0000005
Fault offset: 0x0000462e
Faulting process id: 0x0x85D8
Faulting application start time: 0x0x1D9BAC974EAD144
Faulting application path: D:\temp\VotSystem\bin\Debug\VotSystem.exe
Faulting module path: D:\temp\VotSystem\bin\Debug\Lib\VCRUNTIME140D.dll
Report Id: de481310-df32-4398-8f6c-ef0ea7000290
Faulting package full name:
Faulting package-relative application ID: