ffmpeg render with the parameters below should generate better quality, interlaced (top field first) NTSC widescreen mpeg2. These may be the best tuned parameters
$ ffmpeg -y -i input.mov -target ntsc-dvd -qscale:v 2 -r 29.97 -s 720x480 -aspect 16:9 -g 12 -alternate_scan 1 -top 1 TFF-q2.mpg
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