Hello, We logged elapsed time for API calls. The codec is DNxHD 185. The system is Intel i7-5930K@3.50 Ghz and SATA disk. CreateAmtFile: Between 2 ms – 130 ms (milli seconds) CreateAmtDataStream : 2ms CreateAmtTrack: Between 480ms-1800 ms. (for 1 video and 2 audio) We concern about CreateAmtTrack call. Why does it take long? Is it normal? Version