Scripts used:

LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\DGDecode.dll")
video=MPEG2Source("Clip 120.d2v") # 1440x1080 25PsF
audio=MPASource("Clip 120 MPA PID 814 DELAY -240ms.mpa")
AudioDub(video,audio)
ConvertToYV12
InterFrame(FlowPath="C:\Program Files\AviSynth 2.5\plugins\") # default
Spline36resize(1920,1080)
AssumeFPS(25, 1, true) # 25p 50% speed + audio

DirectShowSource("moorhen feet JK.mp4") #1080 25p
InterFrame(FlowPath="C:\Program Files\AviSynth 2.5\plugins\") # default
AssumeFPS(25, 1, true) # 25p 50% speed + audio

and for the final two scenes:

LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\DGDecode.dll")
video=MPEG2Source("Clip 120.d2v") # 1440x1080 25PsF
audio=MPASource("Clip 120 MPA PID 814 DELAY -240ms.mpa")
AudioDub(video,audio)
ConvertToYV12
Spline36resize(1920,1080)
AssumeFPS(25, 1, true) # 25p normal speed + audio

Exported from VirtualDub using CineForm v6 compression.

Edited and rendered to 720 25p MP4. with Sony Vegas.

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