VSFilterMode

[vcmohan]

In my frequency Domain functions I use FFTW3.dll. This dll is not thread safe, but it uses its internal threads to speed up. I am in doubt as to which VSFilterMode I need to specify
fmParallelRequests or fmUnordered or fmSerial. All these appear to call from one thread only GetFrame when all frames are ready or otherwise. To me all these three methods seem OK but will there be any speed difference?

[Myrsloik]

In my frequency Domain functions I use FFTW3.dll. This dll is not thread safe, but it uses its internal threads to speed up. I am in doubt as to which VSFilterMode I need to specify
fmParallelRequests or fmUnordered or fmSerial. All these appear to call from one thread only GetFrame when all frames are ready or otherwise. To me all these three methods seem OK but will there be any speed difference?

You should generally always use fmParallelRequests for that kind of filter.