Hikvision Player SDK usage

#01 load PlayCtrl.dll #02 call PlayM4_GetPort() #03 call PlayM4_SetFileRefCallBack() #04 call PlayM4_OpenFile() #05 waits for the callback to be called, so we know the file is indexed #06 call PlayM4_GetFileTime() #07 call PlayM4_GetFileTotalFrames() #08 call PlayM4_GetPictureSize() #09 call PlayM4_Play(port, 0) #10 PlayM4_SetCurrentFrameNum(port, 0) #11 PlayM4_Pause(port, 1)

The above calling sequence seems to always work succesfully (no error codes reported).

Now the problem is when we do:

PlayM4_SetCurrentFrameNum(port, frame) real_fram = PlayM4_GetCurrentFrameNum(port)

Now in some cases real_frame != frame