[BUG] Script OutputFPS (59.94 fps) and expected fps (29.97) differ!

# Import scripts

  import edi_rpow2

  import havsfunc

  import validate

  # Source: 'J:\Temp\Test.avi'

  # Current color space: YUV422P8, bit depth: 8, resolution: 720x480, frame rate: 29.97fps, scanorder: top field first, yuv luminance scale: limited, matrix: 470bg

  # Loading J:\Temp\Test.avi using LWLibavSource

  clip = core.lsmas.LWLibavSource(source="J:/Temp/Test.avi", format="YUV422P8", stream_index=0, cache=0, prefer_hw=0)

  frame = clip.get_frame(0)

  # Setting detected color matrix (470bg).

  clip = core.std.SetFrameProps(clip=clip, _Matrix=5)

  # setting color transfer (170), if it is not set.

  if validate.transferIsInvalid(clip):

    clip = core.std.SetFrameProps(clip=clip, _Transfer=6)

  # setting color primaries info (to 470), if it is not set.

  if validate.primariesIsInvalid(clip):

    clip = core.std.SetFrameProps(clip=clip, _Primaries=5)

  # setting color range to TV (limited) range.

  clip = core.std.SetFrameProps(clip=clip, _ColorRange=1)

  # making sure frame rate is set to 29.97fps

  clip = core.std.AssumeFPS(clip=clip, fpsnum=30000, fpsden=1001)

  # making sure the detected scan type is set (detected: top field first)

  clip = core.std.SetFrameProps(clip=clip, _FieldBased=2) # tff

  # Deinterlacing using QTGMC

  clip = havsfunc.QTGMC(Input=clip, Preset="Slow", InputType=0, TFF=True, TR2=1, Sharpness=0.1, SourceMatch=3, Lossless=2, MatchPreset="Slow", MatchEnhance=0.00) # new fps: 59.94

  # Making sure content is preceived as frame based

  clip = core.std.SetFrameProps(clip=clip, _FieldBased=0) # progressive

  clip = core.std.CropRel(clip=clip, left=12, right=12, top=0, bottom=12)# cropping to 696x468

  # resizing using NNEDI3CL

  # current: 696x468 target: 1606x1080 -> pow: 4

  clip = edi_rpow2.nnedi3cl_rpow2(clip=clip, rfactor=4, nsize=3, nns=4) # 2784x1872

  # adjusting resizing

  clip = core.fmtc.resample(clip=clip, w=1606, h=1080, kernel="lanczos", interlaced=False, interlacedd=False)# before YUV422P8 after YUV422P16

  # adjusting output color from: YUV422P16 to YUV420P8 for x264Model

  clip = core.resize.Bicubic(clip=clip, format=vs.YUV420P8, range_s="limited", dither_type="error_diffusion")

  # set output frame rate to 59.94fps (progressive)

  clip = core.std.AssumeFPS(clip=clip, fpsnum=60000, fpsden=1001)

  # output

  clip.set_output()