FieldShiftFixer is for restoration of progressive video, where some parts got interlacing by field shifting between even/odd frames. You have interlaced video from TV and even with a right tool for deinterlacing (like TDeint, LeakKernelDeint, Yadif) you can only improve it for PC playback (using double output framerate). Deinterlacing a fast motion video (like sports) at original framerate kills half of motion phases thus making it look worse on TV.
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